Document:

<PAGE>

Mr. Dan Wilmot
4411 Day Dream Road
Golden, CO  80403

Dear Dan:

This letter will confirm our agreement regarding the termination of your
employment with Vari-L Inc. ("Vari-L"), in connection with the Asset Purchase
Agreement (the "Purchase Agreement") by and among Sirenza Microdevices Inc.,
Olin Acquisition Corporation ("Buyer") and Vari-L. This mutual termination of
employment is contingent upon the Closing (as defined in the Purchase Agreement)
of the sale of Vari-L assets to Buyer contemplated by the Purchase Agreement.
All capitalized terms not otherwise defined herein shall have the meaning given
to them in the Purchase Agreement.

It is a condition to the Closing of the Purchase Agreement that, effective as of
the Closing, (i) you and Vari-L terminate your employment relationship with
Vari-L, including, without limitation, the Vari-L Company, Inc. Executive
Employment Agreement executed by you and Vari-L (the "Existing Employment
Agreement"), and (ii) you waive any and all potential claims against Vari-L
including, but not limited to, any severance benefits payable to you under the
Existing Employment Agreement. Pursuant to Section XIII of the Existing
Employment Agreement, you and Vari-L acknowledge and agree that your termination
from Vari-L shall be a termination by Mutual Agreement and as that is defined in
the Existing Employment Agreement, you are not entitled to any severance
benefits from Vari-L whatsoever.

Although Vari-L has no obligation to do so, in consideration for the promises
and agreements contained in this termination letter, including without
limitation, the Termination by Mutual Agreement of your employment with Vari-L
and release of all claims, Vari-L offers the following potential bonus
opportunity to you should you accept employment with Sirenza:

(a)      SIGNING BONUS: should you accept employment with Sirenza by executing
         Sirenza's standard offer letter (attached) on or before the Closing
         Date, Vari-L shall pay to you a bonus in the amount of $58,000.00
         ("Signing Bonus"). Said Signing Bonus shall be paid to you by Vari-L in
         a lump sum, less applicable taxes and withholding, as required by law,
         within five (5) business days of the Closing Date.

(b)      STAY BONUS: In the event that you accept employment with Sirenza and
         remain employed by Sirenza on the one-year anniversary date of the
         commencement of such employment, you will be entitled to receive from
         Vari-L an additional bonus payment in the amount of $58,000.00 ("Stay
         Bonus"). Said Stay Bonus to be paid in a lump sum, less applicable
         taxes and withholding, as required by law, within five (5) business
         days of the one year anniversary date of your employment with Sirenza.

<PAGE>

         You must be employed with Sirenza on the anniversary date in order to
         be eligible for the Stay Bonus. In no event shall the Stay Bonus be
         prorated regardless of the reason for your separation from employment
         with Sirenza prior to the one year anniversary date. In no event shall
         the Stay Bonus be payable to you by any party other than Vari-L.

(c)      SEVERANCE PAYMENT. In the event that you accept employment with Sirenza
         and are terminated by Sirenza, other than for cause (as defined below),
         prior to the one-year anniversary date of the commencement of such
         employment, you will be entitled to receive from Vari-L a severance
         payment in an amount equal to (i) $101,000.00 less (ii) the Signing
         Bonus and the amount of any severance paid to you by Sirenza (the
         "Severance Payment"). Said Severance Payment to be paid in a lump sum,
         less applicable taxes and withholding, as required by law, within five
         (5) business days of your termination by Sirenza. For purposes of this
         letter agreement, the phrase "for cause" shall have the same meaning as
         set forth in your employment agreement with Sirenza. In no event will
         we be obligated pay you both the Severance Payment and the Stay Bonus.

Thus, we agree that, effective as of the Closing, our employment relationship
pursuant to the Existing Employment Agreement or otherwise is hereby terminated
by mutual agreement. You further agree on your own behalf, and on behalf of your
respective heirs, family members, executors, and assigns, that you hereby fully
and forever release Vari-L and its officers, directors, employees, investors,
shareholders, administrators, affiliates, divisions, subsidiaries, predecessor
and successor corporations, and assigns, from, and agree not to sue concerning,
any claim, duty, obligation or cause of action relating to any matters of any
kind, whether presently known or unknown, suspected or unsuspected, including
but not limited to claims pursuant to any federal, any state or any local law,
statute, common law or cause of action including, but not limited to, the
federal Civil Rights Act of 1964, as amended; attorney's fees under Title VII of
the federal Civil Rights Act of 1964, as amended, or any other statute,
agreement or source of law; the federal Americans with Disabilities Act of 1990;
the federal Age Discrimination in Employment Act, as amended ("ADEA") as set
forth below; the Family and Medical Leave Act; the Employee Retirement Income
Security Act; Colorado Civil Rights Act; the Equal Pay Act, of 1963, as amended;
tort law; contract law; wrongful discharge; discrimination; harassment; fraud;
misrepresentation; defamation; libel; emotional distress; and breach of the
implied covenant of good faith and fair dealing.

ADEA WAIVER AND RELEASE. You acknowledge that you are knowingly and voluntarily
waiving and releasing any rights you may have under the ADEA, as amended. You
also acknowledge that the consideration given for the waiver and release in the
preceding paragraph hereof is in addition to anything of value to which you were
already entitled. You acknowledge that this waiver and release do not apply to
any rights or claims that may arise after the execution date of this Agreement.
You further acknowledge that you have been advised by this writing, as required
by the ADEA, that (a) you should consult with an attorney prior to executing
this Agreement; (b) you have twenty-one (21) days within which to consider this
Agreement (although you may choose to voluntarily execute this Agreement
earlier) (c) you have seven (7) days following the execution of this Agreement
by the parties to revoke the Agreement; and (d) this Agreement shall not be
effective until the revocation period has expired. Nothing in this Agreement
prevents or precludes you from challenging or seeking a determination in good
faith of the validity of this waiver under the ADEA, nor does it impose any
condition precedent, penalties or costs for doing so, unless specifically
authorized by federal law. The parties acknowledge and agree that revocation by
you of the

<PAGE>

ADEA Waiver and Release is not effective to revoke your waiver or release of any
other claims pursuant to this Agreement. Vari-L and you agree that the release
set forth in this section is a complete general release.

Vari-L wishes you the best of luck in the future.

                                                Sincerely,

                                                /s/ CHARLES R. BLAND
                                                -------------------------------
                                                Charles R. Bland
                                                President and CEO
Agreed and Accepted

/s/ DANIEL J. WILMOT
---------------------------------
Signature

Daniel J. Wilmot
---------------------------------
Printed Name<PAGE>
                                                                   EXHIBIT 10.4a

                                 AMENDMENT NO. 7
                                     TO THE
                           1999 CONTRACT FOR SERVICES
                                     BETWEEN
                THE HEALTH AND HUMAN SERVICES COMMISSION AND HMO

This Amendment No. 7 is entered into between the Health and Human Services
Commission (HHSC) and Superior Health Plan, Inc. (HMO) in El Paso Service Area,
to amend the 1999 Contract for Services between the Health and Human Services
Commission and HMO. The effective date of this Amendment is the date HHSC Signs
this Amendment. All other contract provisions remain in full force and effect.
The Parties agree to amend the Contract as follows:

1.   ARTICLE XVIII IS AMENDED TO READ AS FOLLOWS:

15.2            AMENDMENT AND CHANGE REQUEST PROCESS

15.2.1          HHSC and HMO may amend this contract if reductions in funding or
                appropriations make full performance by either party
                impracticable or impossible, and amendment could provide a
                reasonable alternative to termination. If HMO does not agree to
                the amendment, the contract may be terminated under Article
                XVIII.

15.2.2          This contract must be amended if either party discovers a
                material omission of a negotiated or required term, which is
                essential to the successful performance or maintaining
                compliance with the terms of the contract. The party discovering
                the omission must notify the other party of the omission in
                writing as soon as possible after discovery. If there is a
                disagreement regarding whether the omission was intended to be a
                term of the contract, the parties must submit the dispute to
                dispute resolution under Article 15.9.

15.2.3          This contract may be amended at any time by mutual agreement.

15.2.4          All amendments to this contract must be in writing and signed by
                both parties.

15.2.5          Any change in either party's obligations under this contract
                ("Change") requires a written amendment to the contract that is
                negotiated using the process outlined in Article 15.2.6.

15.2.6          Change Request Process.

October 30, 2001                                                         1 of 3

<PAGE>

15.2.6.1        If federal or state laws, rules, regulations, policies or
                guidelines are adopted, promulgated, judicially interpreted or
                changed, or if contracts are entered into or changed, the effect
                of which is to alter the ability of either party to fulfill its
                obligations under this contract, the parties will promptly
                negotiate in good faith, using the process outlined in Article
                15.2.6, appropriate modifications or alterations to the contract
                and any appendix (appendices) or attachments(s) made a part of
                this contract.

15.2.6.2        Change Order Approval Procedure

15.2.6.2.1      During the term of this contract, HHSC or HMO may propose
                changes in the services, deliverables, or other aspects of this
                contract ("Changes"), pursuant to the procedures set forth in
                this article.

15.2.6.2.2      If HHSC proposes a Change, it shall deliver to the HMO a written
                notice describing the proposed Change which includes the State's
                estimated fiscal impact on the HMO, if available ("Change Order
                Request"). HMO must respond to such proposal within 30 calendar
                days of receipt by preparing and delivering to HHSC, at no
                additional cost to HHSC a written document (a "Change Order
                Response"), that specifies:

15.2.6.2.2.1    The financial impact, if any, of the Change Order Request on the
                HMO and the manner in which such impact was calculated;

15.2.6.2.2.2    The effect, if any, of the Change Order Request on HMO's
                performance of its obligations under this contract, including
                the effect on the services or deliverables;

15.2.6.2.2.3    The anticipated time schedule for implementing the Change Order
                Request; and

15.2.6.2.2.4    Any other information requested in the Change Order Request or
                which is reasonably necessary for HHSC to make an informed
                decision regarding the proposal.

15.2.6.2.3      If HMO proposes a Change, it must deliver a HMO Change Order
                Request to HHSC that includes the proposed Change and
                information described in Articles 15.2.6.2.2.1 - 15.2.6.2.2.4
                for a Change Order Response. HHSC must respond to HMO within 30
                calendar days of receipt of this information.

15.2.6.2.4      Upon HHSC's receipt of a Change Order Request or a Change Order
                Response, the Parties shall negotiate a resolution of the
                requested Change in good faith. The parties will exchange
                information in good faith in an attempt to agree upon the
                requested Change.

October 30, 2001                                                         2 of 3

<PAGE>

15.2.6.3        No Change to the services or deliverables or any other aspect of
                this contract will become effective without the written approval
                and execution of a mutually agreeable written amendment to this
                contract by HHSC and the HMO. Under no circumstances will the
                HMO be entitled to payment for any work or services rendered
                under a Change Order that has not been approved by HHSC in
                accordance with the Change Order Procedures.

15.2.7          The implementation of an amendment to this contract is subject
                to the approval of the Centers for Medicare and Medicaid
                Services (CMS, formerly called HCFA).

2.   APPENDIX C: Appendix C is deleted in its entirety and is replaced by a new
     Appendix C which is Attachment No. 1 to this amendment. This amendment
     provides for the addition of "Special Programs for Illness" for gestational
     diabetes and the modification of the "Prenatal Program with Gifts".

AGREED AND SIGNED by an authorized representative of the parties on
_________________ 2001.

Health and Human Services Commission      Superior Health Plan, Inc.

By: /s/ Don A. Gilbert                    By: /s/ Michael Neidorff
   ---------------------------               ----------------------------------
   Don. A Gilbert                            Michael Neidorff
                                             President & CEO, Centene

Approved as to Form:

-----------------------------
Office of General Counsel

October 30, 2001                                                        3 of 3

<PAGE>

                                 AMENDMENT NO. 8
                                     TO THE
                           1999 CONTRACT FOR SERVICES
                                     BETWEEN
                  HEALTH AND HUMAN SERVICES COMMISSION AND HMO

This Amendment No. 8 is entered into between the Health and Human Services
Commission (HHSC) and Superior Health Plan, Inc. (HMO), to amend the Contract
for Services between the Health and Human Services Commission and HMO in the El
Paso Service Area. The effective date of this amendment is January 1, 2002. The
Parties agree to amend the Contract as follows:

1. Article XIII is amended to read as follows:

ARTICLE XIII               PAYMENT PROVISIONS

13.1              CAPITATION AMOUNTS

13.1.2            HMO capitation rates listed below reflect program increases
                  appropriated by the 76th and 77th legislatures for physician
                  services (to include THSteps providers) and outpatient
                  facility services. Rates will be increased starting January 1,
                  2002, to reflect increases in traditional fee-for-service
                  payments for 1) Evaluation and Management Level 3 services
                  (procedure code 99213), and 2) high-volume providers. The
                  methodology for determining high-volume providers will be
                  distributed to HMO by HHSC ("High-volume Provider
                  Methodology"). The first rate increase will be effective
                  January 1, 2002, and will reflect increases for procedure code
                  99213. Rate increases for high volume providers will be
                  effective the first day of the month after the "High-volume
                  Provider Methodology" is released by HHSC. The Methodology
                  will state the amount of each increase (99213 and high-volume
                  provider). Final rates with all increases included are shown
                  in the table below.

13.1.2.           HMO must submit reports to HHSC indicating the methodology
                  used and must certify that the funds provided to the HMO for
                  the pass through have been passed through to providers. HMO
                  must use the reporting format specified by HHSC and follow the
                  reporting schedule indicated on the HHSC deliverables matrix.

                                          PPAC Rate Increase Amendment 12/12/01

<PAGE>

13.1.2.2          Capitation Rates
<Table>
<Caption>

                     Risk Group                            Monthly Capitation Amounts
                     ----------                            --------------------------
<S>                  <C>                                   <C>
                     TANF Adults                           $ 178.98
                     TANF Children > 12 Months             $  84.24
                     of Age
                     Expansion Children > 12               $  72.77
                     Months of Age
                     Newborns (12 Months of                $ 363.27
                     Age)
                     TANF Children 12 Months               $ 363.27
                     of Age
                     Expansion Children 12                 $ 363.27
                     Months of Age
                     Federal Mandate Children              $  47.90
                     CHIP Phase I                          $  62.04
                     Pregnant Women                        $ 216.51
                     Disabled/Blind                        $  14.00
                     Administration

</Table>

13.1.2.3          Delivery Supplemental Payment. A one-time per pregnancy
                  supplemental payment for each delivery shall be paid to HMO in
                  the following amount: $2,992.02. HMO will receive a DSP for
                  each live or still birth. The one-time payment is made
                  regardless of whether there is a single or multiple births at
                  time of delivery. A delivery is the birth of a liveborn
                  infant, regardless of the duration of the pregnancy, or a
                  stillborn (fetal death) infant of 20 weeks or more gestation.
                  A delivery does not include a spontaneous or induced abortion,
                  regardless of the duration of the pregnancy.

13.1.2.4          For an HMO Member who is classified in the Pregnant Women,
                  TANF Adults, TANF Children >12 months, Expansion Children >12
                  months, Federal Mandate Children, or CHIP risk group, HMO will
                  be paid the monthly capitation amount identified in Article
                  13.1.2 for each month of classification, plus the DSP amount
                  identified in Article 13.1.2.

13.1.2.5          HMO must submit a monthly DSP Report (report) that includes
                  the data elements specified by TDH. TDH will consult with
                  contracted HMOs prior to revising the report data elements and
                  requirements. The reports must be submitted to TDH in the
                  format and time specified by TDH. The report must include only
                  unduplicated deliveries. The report must include only
                  deliveries for which HMO has made a payment for the delivery,
                  to

                                          PPAC Rate Increase Amendment 12/12/01

<PAGE>

                  either a hospital or other provider. No DSP will be made for
                  deliveries which are not reported by HMO to TDH within 210
                  days after the date of delivery, or within 30 days from the
                  date of discharge from the hospital for the stay related to
                  the delivery, whichever is later.

13.1.2.6          HMO must maintain complete claims and adjudication disposition
                  documentation, including paid and denied amounts for each
                  delivery. HMO must submit the documentation to TDH within five
                  (5) days from the date of a TDH request for documents.

13.1.2.7          The DSP will be made by TDH to HMO within twenty (20) state
                  working days after receiving an accurate report from HMO.

13.1.2.8          All infants of age equal to or less than twelve months
                  (Newborns) in the TANF Children, Expansion Children, and
                  Newborns risk groups will be capitated at the Newborns
                  classification capitation amount in Article 13.1.2.

AGREED AND SIGNED by an authorized representative of the parties on
______________________________2001.

Health and Human Services Commission         Superior Health Plan, Inc.

By: /s/ Don A. Gilbert                       By: /s/ Michael Neidorff
   --------------------------                   -------------------------------
   Don A. Gilbert                               Michael Neidorff
                                                President & CEO, Centene

Approved as to Form:

------------------------------------
Office of General Counsel

                                          PPAC Rate Increase Amendment 12/12/01

<PAGE>

                                   AMENDMENT 9
                          TO THE AGREEMENT BETWEEN THE
                       HEALTH & HUMAN SERVICES COMMISSION
                                       AND
                           SUPERIOR HEALTH PLAN, INC.
                               FOR HEALTH SERVICES
                                     TO THE
                              MEDICAID STAR PROGRAM
                                     IN THE
                          EL PASO SERVICE DELIVERY AREA

<PAGE>

                                   AMENDMENT 9
                          TO THE AGREEMENT BETWEEN THE
                       HEALTH & HUMAN SERVICES COMMISSION
                                       AND
                           SUPERIOR HEALTH PLAN, INC.
                               FOR HEALTH SERVICES
                                     TO THE
                    MEDICAID STAR PROGRAM IN THE EL PASO SDA

<Table>
<Caption>
<S>     <C>                                                                                                         <C>
ARTICLE 1. PURPOSE................................................................................................... 1
  SECTION 1.01 AUTHORIZATION......................................................................................... 1
  SECTION 1.02 GENERAL EFFECTIVE DATE OF CHANGES..................................................................... 1
ARTICLE 2. AMENDMENT TO THE OBLIGATIONS OF THE PARTIES............................................................... 1
  SECTION 2.01 GENERAL............................................................................................... 1
  SECTION 2.02 MODIFICATION OF SECTION 1.4, RENEWAL REVIEWS.......................................................... 1
  SECTION 2.03 MODIFICATION OF ARTICLE 2, DEFINITIONS................................................................ 2
  SECTION 2.04 MODIFICATION OF SECTION 3.4, PLAN MATERIALS AND DISTRIBUTION OF PLAN MATERIALS........................ 3
  SECTION 2.05 MODIFICATION OF SECTION 3.5, RECORDS REQUIREMENT AND RECORDS RETENTION................................ 3
  SECTION 2.06 MODIFICATION OF SECTION 3.7, HMO TELEPHONE ACCESS REQUIREMENTS........................................ 3
  SECTION 2.07 MODIFICATION OF SECTION 4.3, PERFORMANCE BOND......................................................... 4
  SECTION 2.08 MODIFICATION OF SECTION 4.6, AUDIT.................................................................... 4
  SECTION 2.09 MODIFICATION OF SECTION 4.9, THIRD PARTY RECOVERY..................................................... 4
  SECTION 2.10 MODIFICATION OF SECTION 4.10, CLAIMS PROCESSING REQUIREMENTS.......................................... 4
  SECTION 2.11 MODIFICATION TO SECTION 5.4, SAFEGUARDING INFORMATION................................................. 5
  SECTION 2.12 MODIFICATION OF SECTION 5.6, HISTORICALLY UNDERUTILIZED BUSINESSES (HUBS)............................. 5
  SECTION 2.13 MODIFICATION OF SECTION 5.10, NOTICE AND APPEAL....................................................... 6
  SECTION 2.14 MODIFICATION OF SECTION 6.3, SPAN OF ELIGIBILITY...................................................... 6
  SECTION 2.15 MODIFICATION OF SECTION 6.4, CONTINUITY OF CARE AND OUT-OF-NETWORK PROVIDERS.......................... 7
  SECTION 2.16 MODIFICATION OF SECTION 6.5, EMERGENCY SERVICES....................................................... 8
  SECTION 2.17 MODIFICATION OF SECTION 6.6, BEHAVIORAL HEALTH CARE SERVICES - SPECIFIC REQUIREMENTS.................. 8
  SECTION 2.18 MODIFICATION TO SECTION 6.16, BLIND AND DISABLED MEMBERS.............................................. 9
  SECTION 2.19 MODIFICATION OF SECTION 8.4, MEMBER ID CARDS.......................................................... 9
  SECTION 2.20 MODIFICATION OF SECTION 10.1, MODEL MIS REQUIREMENTS.................................................. 9
  SECTION 2.21 MODIFICATION OF SECTION 10.4, PROVIDER SUBSYSTEM...................................................... 9
  SECTION 2.22 MODIFICATION OF SECTION 10.9, DATA INTERFACE SUBSYSTEM................................................ 9
  SECTION 2.23 MODIFICATION OF SECTION 10.11, YEAR 2000 (Y2K) COMPLIANCE.............................................10
  SECTION 2.24 ADDITION OF SECTION 10.12, HEALTH INSURANCE PORTABILITY AND ACCOUNTABILITY ACT
    (HIPAA) COMPLIANCE.............................................................................................. 10
  SECTION 2.25 MODIFICATION OF SECTION 12.1., FINANCIAL REPORTS..................................................... 10
  SECTION 2.26 MODIFICATION OF SECTION 12.4, SUMMARY REPORT OF PROVIDER COMPLAINTS.................................. 11
  SECTION 2.27 MODIFICATION OF SECTION 12.6, MEMBER COMPLAINTS...................................................... 12
  SECTION 2.28 MODIFICATION OF SECTION 12.13, EXPEDITED PRENATAL OUTREACH REPORT.................................... 12
  SECTION 2.29 ADDITION OF SECTION 12.14, MEMBER HOTLINE PERFORMANCE REPORT......................................... 12
  SECTION 2.30 ADDITION OF SECTION 12.15, SUBMISSION OF STAR DELIVERABLES/REPORTS................................... 12
  SECTION 2.31 MODIFICATIONS TO SECTION 13.1, CAPITATION AMOUNTS.................................................... 13
  SECTION 2.32 MODIFICATION OF SECTION 13.2, EXPERIENCE REBATE TO THE STATE......................................... 14
  SECTION 2.33 SECTION 13.3, PERFORMANCE OBJECTIVES................................................................. 15
  SECTION 2.34 MODIFICATION OF SECTION 13.5, NEWBORN AND PREGNANT WOMEN PAYMENT PROVISIONS.......................... 15
  SECTION 2.35 MODIFICATION OF SECTION 14.3, NEWBORN ENROLLMENT..................................................... 16
  SECTION 2.36 MODIFICATION OF SECTION 15.12, NOTICES............................................................... 16
  SECTION 2.37 MODIFICATION OF SECTION 18.1.6, TERMINATION BY HMO................................................... 16
  SECTION 2.38 MODIFICATION OF SECTION 18.10, REVIEW OF REMEDY OR REMEDIES TO BE IMPOSED.............................16
  SECTION 2.39 MODIFICATION OF SECTION 19.1, CONTRACT TERM...........................................................17
  SECTION 2.40 MODIFICATIONS TO CONTRACT APPENDICES..................................................................17
ARTICLE 3. REPRESENTATIONS AND AGREEMENT OF THE PARTIES..............................................................17

</Table>

                                            i

<PAGE>

                                                   HHSC CONTRACT NO. 529-03-044

STATE OF TEXAS
COUNTY OF TRAVIS

                                   AMENDMENT 9
                          TO THE AGREEMENT BETWEEN THE
                       HEALTH & HUMAN SERVICES COMMISSION
                                       AND
                           SUPERIOR HEALTH PLAN, INC.
                               FOR HEALTH SERVICES
                                     TO THE
                              MEDICAID STAR PROGRAM
                                     IN THE
                          EL PASO SERVICE DELIVERY AREA

      THIS CONTRACT AMENDMENT (the "Amendment") is entered into between the
HEALTH & HUMAN SERVICES COMMISSION ("HHSC"), an administrative agency within the
executive department of the State of Texas, and Superior Health Plan, Inc.
("HMO"), a health maintenance organization organized under the laws of the State
of Texas, possessing a certificate of authority issued by the Texas Department
of Insurance to operate as a health maintenance organization, and having its
principal office at: 2100 S. IH-35, Suite 202, Austin, TX 78704. HHSC and HMO
may be referred to in this Amendment individually as a "Party" and collectively
as the "Parties."

     The Parties hereby agree to amend their Agreement as set forth in Article 2
of this Amendment.

                               ARTICLE 1. PURPOSE.

SECTION 1.01 AUTHORIZATION.

     This Amendment is executed by the Parties in accordance with Section 15.2
of the Agreement.

SECTION 1.02 GENERAL EFFECTIVE DATE OF CHANGES.

     This Amendment is effective SEPTEMBER 1, 2002, and terminates on August 31,
2003, unless extended or terminated sooner in accordance with the Agreement.

             ARTICLE 2. AMENDMENT TO THE OBLIGATIONS OF THE PARTIES

SECTION 2.01 GENERAL

     The Health Care Financing Administration (HCFA) has had a name change to
the Centers for Medicare and Medicaid Services (CMS). All references to HCFA in
the Agreement should be replaced with CMS.

SECTION 2.02 MODIFICATION OF SECTION 1.4, RENEWAL REVIEWS

     Section 1.4 is replaced with the following language:

                      "Renewal Review. At its sole discretion, HHSC may choose
                  to conduct a renewal review of HMO's performance and
                  compliance with this contract as a condition for retention and
                  renewal."

 HHSC Contract 529-03-044l
                                  Page 1 of 17

<PAGE>

SECTION 2.03 MODIFICATION OF ARTICLE 2, DEFINITIONS

         (a) The following terms amend and modify the definitions set forth in
Article 2:

                           "CMS means the Centers for Medicare and Medicaid
                  Services, formerly known as the Health Care Financing
                  Administration (HCFA), which is the federal agency responsible
                  for administering Medicare and overseeing state administration
                  of Medicaid.

                           EMERGENCY MEDICAL CONDITION means a medical condition
                  manifesting itself by acute symptoms of recent onset and
                  sufficient severity (including severe pain), such that a
                  prudent layperson, who possesses an average knowledge of
                  health and medicine, could reasonably expect the absence of
                  immediate medical care could result in: (a) placing the
                  patient's health in serious jeopardy; (b) serious impairment
                  to bodily functions; (c) serious dysfunction of any bodily
                  organ or part; (d) serious disfigurement; or (e) in the case
                  of a pregnant woman, serious jeopardy to the health of the
                  fetus. FAIR HEARING means the process adopted and implemented
                  by the Texas Health and Human Services Commission, 25 TAC
                  Chapter 1, in compliance with federal regulations and state
                  rules relating to Medicaid Fair Hearings.

                           HEDS means the HMO/EPO/Dental Services Division of
                  the Texas Health and Human Services Commission.

                           HHSC means the Texas Health and Human Services
                  Commission or its designees.

                           THIRD PARTY LIABILITY (TPL) means the legal
                  responsibility of another individual or entity to pay for all
                  or part of the services provided to Members under this
                  contract (see 1 TAC, Subchapter 354.2301 et seq., relating to
                  Third Party Resources).

                           TP 40 means Type Program 40, which is a TDHS Medicaid
                  program eligibility type assigned to pregnant women under 185%
                  of the federal poverty level (FPL).

                           TP 45 means Type Program 45, which is a TDHS Medicaid
                  program eligibility code assigned to newborns (under 12
                  months) who are born to mothers who are Medicaid eligible at
                  the time of the child's birth.

                           TEXMEDNET means Texas Medical Network, which is the
                  State's information system that processes claims and
                  encounters. TexMedNet's functions include, but are not limited
                  to eligibility verification, claims and encounters
                  submissions, e-mail communications, and electronic funds
                  transfers."

     (b) The term "HHSCS" is deleted and replaced with "TDHS" as defined in
Article 2 of the Contract.

     (c) The term "THHSC" is deleted and replaced with "HHSC" as defined above.

HHSC Contract 529-03-044
                                  Page 2 of 17

<PAGE>

SECTION 2.04 MODIFICATION OF SECTION 3.4, PLAN MATERIALS AND DISTRIBUTION OF
PLAN MATERIALS

         Section 3.4.3 is replaced with the following language:

                           "3.4.3 All plan materials regarding the STAR Program,
                  including Member education materials, must be submitted to
                  HHSC for approval prior to distribution. HHSC has fifteen (15)
                  working days to review the materials and recommend any
                  suggestions or required changes. If HHSC has not responded to
                  HMO by the fifteenth (15th) day, HMO may print and distribute
                  these materials. HHSC reserves the right to request HMO to
                  modify plan materials that are deemed approved and have been
                  printed or distributed. These modifications can be made at the
                  next printing unless substantial non-compliance exists. An
                  exception to the fifteen (15) working day timeframe may be
                  requested in writing by HMO, for written provider materials
                  that require a quick turn-around time (e.g., letters). These
                  materials will generally be reviewed by HHSC within five (5)
                  working days. HHSC reserves the right to require revisions to
                  materials if inaccuracies are discovered or if changes are
                  required by changes in policy or law. These changes can be
                  made at the next printing unless substantial non-compliance
                  exists, as determined by HHSC.

SECTION 2.05 MODIFICATION OF SECTION 3.5, RECORDS REQUIREMENT AND RECORDS
RETENTION

     Section 3.5.1 is replaced with the following language:

                           "3.5.1 HMO must keep all records required to be
                  created and retained under this Agreement in accordance with
                  the standards set forth herein. Records related to Members
                  served in the HMO's service area(s) must be made available in
                  HMO's local office when requested by HHSC.

                           Original records, except paper claims, must be kept
                  in the form they were created in the regular course of
                  business for a minimum of three (3) years following the
                  expiration of the contract period, including any extensions.
                  Paper claims may be digitally copied from the time of initial
                  receipt, if the HMO: 1) receives HHSC prior written approval;
                  2) certifies that an unaltered copy of the original claim
                  received can be produced upon request; 3) the retention system
                  is reliable and supported by a retrieval system that allows
                  reasonable accurate records. HHSC may require the HMO to
                  retain the records for an additional period if an audit,
                  litigation or administrative action involving the records
                  exists."

SECTION 2.06 MODIFICATION OF SECTION 3.7, HMO TELEPHONE ACCESS REQUIREMENTS

     Section 3.7.1 is replaced with the following language:

                           3.7.1 For all HMO telephone access (including
                  Behavioral Health telephone services), HMO must ensure
                  adequately-staffed telephone lines. Telephone personnel must
                  receive customer service telephone training. HMO must ensure
                  that telephone staffing is adequate to fulfill the standards
                  of promptness and quality listed below: 1. 80% of all
                  telephone calls must be answered within an average of 30
                  seconds; 2. The lost (abandonment) rate must not exceed 10%;

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<PAGE>

                           3. HMO cannot impose maximum call duration limits but
                  must allow calls to be of sufficient length to ensure adequate
                  information is provided to the Member or Provider.

                           4. Telephone services must meet cultural competency
                  requirements (see Article 8.8) and provide "linguistic access"
                  to all members as defined in Article II. This would include
                  the provision of interpretive services required for effective
                  communication for Members and providers.

SECTION 2.07  MODIFICATION OF SECTION 4.3, PERFORMANCE BOND

     Section 4.3 is replaced with the following language:

                           "4.3 HMO has furnished HHSC with a performance bond
                  in the form prescribed by HHSC and approved by TDI, naming
                  HHSC as Obligee, securing HMO's faithful performance of the
                  terms and conditions of this Agreement. The performance bond
                  must be issued in the amount of $100,000 for the Contract
                  Period, plus an additional 12 months after the expiration of
                  the Contract Period. If the Contract Period is renewed or
                  extended pursuant to Article 15, the HMO must replace the
                  performance bond with a separate bond covering performance
                  during the renewal or extension period, plus an additional 12
                  months. The bond must be issued by a surety licensed by TDI,
                  and specify cash payment as the sole remedy. HMO must deliver
                  the bond to HHSC at the same time the signed HMO contract,
                  renewal or extension is delivered to HHSC."

SECTION 2.08  MODIFICATION OF SECTION 4.6, AUDIT

     Section 4.6.2 is replaced with the following language:

                           "4.6.2 HHSC or its designee will conduct an audit of
                  HMO at least once every two years. HMO is responsible for
                  paying the costs of an audit conducted under this Article. The
                  costs of the audit paid by HMO are allowable costs under this
                  Agreement."

SECTION 2.09 MODIFICATION OF SECTION 4.9, THIRD PARTY RECOVERY

     Section 4.9.2 is replaced with the following language:

                           "4.9.2 Identification. HMO must develop and implement
                  systems and procedures to identify potential third parties who
                  may be liable for payment of all or part of the costs for
                  providing medical services to Members under this contract.
                  Potential third parties must include any of the sources
                  identified in 42 C.F.R. 433.138, relating to identifying third
                  parties, except workers' compensation, uninsured and
                  underinsured motorist insurance, first and third party
                  liability insurance and tortfeasors. HMO must coordinate with
                  HHSC to obtain information from other state and federal
                  agencies and HMO must cooperate with HHSC in obtaining
                  information from commercial third party resources. HMO must
                  require all providers to comply with the provisions of 1 TAC
                  Section 354.2301, et seq., relating to Third Party Recovery in
                  the Medicaid program."

SECTION 2.10 MODIFICATION OF SECTION 4.10, CLAIMS PROCESSING REQUIREMENTS

     Section 4.10.8 is replaced with the following language:

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<PAGE>

                           "4.10.8 HMO must comply with the standards adopted by
                  the U.S. Department of Health and Human Services under the
                  Health Insurance Portability and Accountability Act of 1996
                  (HIPAA), Public Law 104-191, regarding submitting and
                  receiving claims information through electronic data
                  interchange (EDI) that allows for automated processing and
                  adjudication of claims within two or three years, as
                  applicable, from the date the rules promulgated under HIPAA
                  are adopted (see 45 CFR parts 160 through 164).

SECTION 2.11 MODIFICATION TO SECTION 5.4, SAFEGUARDING INFORMATION

     Section 5.4.1 is replaced with the following language:

                           "5.4.1 The use and disclosure of all Member
                  information, records, and data (Member Information) collected
                  or provided to HMO by HHSC or another state agency is
                  protected by state and federal law and regulations, including,
                  but not limited to, the Health Insurance Portability and
                  Accountability Act of 1996 (HIPAA), Public law 104-191, and 45
                  CFR parts 160 through 164. HMO agrees to ensure that any of
                  its agents, including subcontractors, to whom HMO discloses
                  Member Information agrees to the same restrictions and
                  conditions that apply to HMO with respect to Member
                  Information.

SECTION 2.12 MODIFICATION OF SECTION 5.6, HISTORICALLY UNDERUTILIZED BUSINESSES
(HUBS)

     Sections 5.6.1 through 5.6.3 are replaced with the following language:

                           "5.6.1 In accordance with Texas Government Code
                  Chapter 2161 and 1 TAC Section 111.11 et seq. and ss.392.100
                  state agencies are required to make a good faith effort to
                  assist Historically Underutilized Businesses (HUBs) in
                  receiving contract awards issued by the State. The goal of
                  this program is to promote full and equal business opportunity
                  for all businesses in contracting with the state. It is HHSC's
                  intent that all contractors make a good faith effort to
                  subcontract with HUBs during the performance of their
                  contracts.

                           IMPORTANT NOTE: The Health and Human Services
                  Commission has concluded that HUB subcontracting opportunities
                  may exist in connection with this contract. See Appendix B to
                  the Agreement for the following instructions and form:
                  "Grant/Contract Applicants Client Services HUB Subcontracting
                  Plan Instructions" (C-IGA), and Determination of Good Faith
                  Effort for Grant Contracts (C-DGFE). If an approved HUB
                  subcontracting plan is not already on file with HHSC, THE HMO
                  SHALL SUBMIT A COMPLETED C-DGFE FORM ALONG WITH THE SIGNED
                  CONTRACT OR RENEWAL.

                           If HMO responds, `yes' to question two on Form
                  C-DGFE, HMO shall document good faith efforts to develop a HUB
                  Subcontracting Plan by completing and documenting the steps on
                  form C-DGFE. Additionally, quarterly reports on HUB
                  subcontracting are required according to the schedule on Form
                  C-QSR. Quarterly Report forms are included in Appendix B of
                  this amendment.

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<PAGE>

                           If HMO decides after the award to subcontract any
                  part of the contract, the HMO shall notify the contract
                  manager prior to entering into any subcontract. The HMO shall
                  comply with the good faith effort requirements relating to
                  developing and submitting a subcontracting plan.

                           5.6.2 HMO is required to submit HUB quarterly reports
                  to HHSC as required in Article 12.11.

                           5.6.3 HHSC will assist HMO in meeting the contracting
                  and reporting requirements of this Article."

SECTION 2.13 MODIFICATION OF SECTION 5.10, NOTICE AND APPEAL

      Section 5.10 is replaced with the following:

                           "5.10 HMO must comply with the notice requirements
                  contained in 1 TAC Section 354.2211, and the maintaining
                  benefits and services contained in 1 TAC Section 354.2213,
                  whenever HMO intends to take an action affecting the Member
                  benefits and services under this contract. Also see the Member
                  appeal requirements contained in Article 8.6 of this
                  Agreement."

SECTION 2.14 MODIFICATION OF SECTION 6.3, SPAN OF ELIGIBILITY

      Section 6.3 and its subparts are replaced with the following language"

                           "6.3 The following outlines HMO's responsibilities
                  for payment of hospital and freestanding psychiatric facility
                  (facility) admissions:

                           6.3.1 The payor responsible for the hospital/facility
                  charges at the start of an inpatient stay remains responsible
                  for hospital/facility charges until the time of discharge, or
                  until such time that there is a loss of Medicaid eligibility.

                           6.3.2 HMO is responsible for professional charges
                  during every month for which the payor receives a full
                  capitation payment.

                           6.3.3 HMO is not responsible for any services after
                  effective date of loss of Medicaid eligibility

                           6.3.4 Plan Change. A Member cannot change from one
                  STAR health plan to another STAR health plan during an
                  inpatient hospital stay.

                           6.3.5 Hospital/Facility Transfer. Discharge from one
                  acute care hospital/facility and readmission to another acute
                  care hospital/facility within 24 hours for continued treatment
                  is not a discharge under this contract.

                           6.3.6 HMO insolvency or receivership. HMO is
                  responsible for payment of all services provided to a person
                  who was a Member on the date of insolvency or receivership to
                  the same extent they would otherwise be responsible under this
                  Article 6.3.

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<PAGE>

                           6.3.7 For purposes of this Section 6.3, a Member
                  "loses Medicaid eligibility" when:

                           6.3.7.1 Medicaid eligibility is terminated and never
                  regained under one Medicaid Type Program with no subsequent
                  transfer of eligibility to another Medicaid Type Program; or

                           6.3.7.2 Medicaid eligibility is terminated and there
                  is a lapse of at least one month in regular Medicaid coverage.
                  The term "regular Medicaid coverage" refers to either
                  traditional fee-for-service Medicaid or Medicaid managed care
                  coverage; or

                           6.3.7.3 A client re-applies for Medicaid eligibility
                  and is certified for prior Medicaid coverage, as defined by
                  TDHS, for any month(s) prior to the month of application. The
                  term "prior Medicaid coverage" refers to Applicants who are
                  eligible for Medicaid coverage during the three-month period
                  before the month they apply for TANF or Medical Programs.
                  Prior Medicaid coverage may be continuous or there may be
                  interrupted periods of eligibility involving all or some of
                  the certified Members.

                           Administrative process limitations within the State's
                  application and recertification process do not constitute a
                  "loss of Medicaid eligibility".

SECTION 2.15 MODIFICATION OF SECTION 6.4, CONTINUITY OF CARE AND OUT-OF-NETWORK
PROVIDERS

     Section 6.4.3 is replaced with the following language:

                           "6.4.3 HMO must pay a Member's existing
                  out-of-network providers for covered services until the
                  Member's records, clinical information and care can be
                  transferred to a network provider. Payment must be made within
                  the time period required for network providers. This Article
                  does not extend the obligation of HMO to reimburse the
                  Member's existing out-of-network providers for on-going care
                  for more than 90 days after Member enrolls in HMO or for more
                  than nine months in the case of a Member who at the time of
                  enrollment in HMO has been diagnosed with and receiving
                  treatment for a terminal illness. The obligation of HMO to
                  reimburse the Member's existing out-of-network provider for
                  services provided to a pregnant Member with 12 weeks or less
                  remaining before the expected delivery date extends through
                  delivery of the child, immediate postpartum care, and the
                  follow-up checkup within the first six weeks of delivery.

                           6.4.3.1 HMO will pay reasonable and customary rates
                  for all out-of-network provider claims with dates of service
                  between September 1, 2002 and November 30, 2002. HMO must
                  forward any complaints submitted by out-of-network providers
                  during this time to HHSC. HHSC will review all complaints and
                  determine whether payments were reasonable and customary. HHSC
                  will direct the HMO to pay a reasonable and customary amount,
                  as determined by HHSC, if it concludes that the payments were
                  not reasonable and customary for the provider. Failure to
                  comply with this provision constitutes a default under Article
                  XVI, Default and Remedies.

                           6.4.3.2 For all out-of-network provider claims with
                  dates of service on or after December 1, 2002, HMO must pay
                  providers a reasonable and

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<PAGE>

                  customary amount consistent with a methodology approved by
                  HHSC. HMO must submit its methodology, along with any
                  supporting documentation, to HHSC by September 30, 2002. HHSC
                  will review and respond to the information by November 15,
                  2002. HMO must forward any complaints by out-of-network
                  providers submitted after December 1, 2002 to HHSC, which will
                  review all complaints. If HHSC determines that payment is not
                  consistent with the HMO's approved methodology, the HMO must
                  pay the provider a rate, using the approved reasonable and
                  customary methodology, as determined by HHSC. Failure to
                  comply with this provision constitutes a default under Article
                  XVI, Default and Remedies.

SECTION 2.16 MODIFICATION OF SECTION 6.5, EMERGENCY SERVICES

     Section 6.5.1 is replaced with the following language:

                           "6.5.1 HMO must pay for the professional, facility,
                  and ancillary services that are medically necessary to perform
                  the medical screening examination and stabilization of HMO
                  Member presenting as an emergency medical condition or an
                  emergency behavioral health condition to the hospital
                  emergency department, 24 hours a day, 7 days a week, rendered
                  by either HMO's in-network or out-of-network providers.
                  6.5.1.1 For all out-of-network providers, HMO will pay a
                  reasonable and customary amount for emergency services.

                           HMO will pay a reasonable and customary amount for
                  services for all out-of-network emergency services provider
                  claims with dates of service between September 1, 2002 and
                  November 30, 2002. HMO must forward any complaints submitted
                  by out-of-network emergency services providers during this
                  time to HHSC. HHSC will review all complaints and determine
                  whether payments were reasonable and customary. HHSC will
                  direct the HMO to pay a reasonable and customary amount, as
                  determined by HHSC, if it concludes that the payments were not
                  reasonable and customary for the provider.

                           6.5.1.2 For all out-of-network emergency services
                  provider claims with dates of service on or after December 1,
                  2002, HMO must pay providers a reasonable and customary amount
                  consistent with a methodology approved by HHSC. HMO must
                  submit its methodology, along with any supporting
                  documentation, to HHSC by September 30, 2002. HHSC will review
                  and respond to the information by November 15, 2002. HMO must
                  forward any complaints by out-of-network emergency services
                  providers submitted after December 1, 2002 to HHSC, which will
                  review all complaints. If HHSC determines that payment is not
                  consistent with the HMO's approved methodology, the HMO must
                  pay the emergency services provider a rate, using the approved
                  reasonable and customary methodology, as determined by HHSC.
                  Failure to comply with this provision constitutes a default
                  under Article XVI, Default and Remedies.

SECTION 2.17 MODIFICATION OF SECTION 6.6, BEHAVIORAL HEALTH CARE SERVICES -
SPECIFIC REQUIREMENTS

     Section 6.6.5 is replaced with the following language:

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<PAGE>

                           "6.6.5 When assessing Members for behavioral health
                  care services, HMO and network behavioral health providers
                  must use the DSM-IV multi-axial classification. HHSC may
                  require use of other assessment instrument/outcome measures in
                  addition to the DSM-IV. Providers must document DSM-IV and
                  assessment/outcome information in the Member's medical
                  record."

SECTION 2.18 MODIFICATION TO SECTION 6.16, BLIND AND DISABLED MEMBERS

     Section 6.16.1 is replaced with the following language:

                           "6.16.1 Blind and disabled Members' SSI status is
                  effective the date of State's eligibility system, SAVERR,
                  identifies the Member as Type Program 13 (TP13). On this
                  effective date, the Member becomes a voluntary STAR enrollee.

                           The State is responsible for updating the State's
                  eligibility system within 45 days of official notice of the
                  Members' federal SSI eligibility by the Social Security
                  Administration (SSA).

SECTION 2.19 MODIFICATION OF SECTION 8.4, MEMBER ID CARDS

     Section 8.4.1 is replaced with the following language:

                           "8.4.1 A Medicaid Identification Form (Form 3087) is
                  issued monthly by the TDHS. The form includes the "STAR"
                  Program logo and the name and toll free number of the Member's
                  health plan. A Member may have a temporary Medicaid
                  Identification (Form 1027-A), which will include a STAR
                  indicator."

SECTION 2.20  MODIFICATION OF SECTION 10.1, MODEL MIS REQUIREMENTS

     Section 10.1.3.6 is replaced with the following language:

                           "10.1.3.6 HMO is required to provide representation
                  to attend and participate in the HHSC Systems Workgroup as a
                  part of the Systems Scan Call."

SECTION 2.21 MODIFICATION OF SECTION 10.4, PROVIDER SUBSYSTEM

     Subparts 7 and 8 of Section 10.4 are replaced with the following language:

                           "7. Support national provider number format (UPIN,
                  NPIN, CLIA, TPI, etc., as required by HHSC).

                           8. Provide Provider Network and Affiliation files 90
                  days prior to implementation and updates monthly. Format will
                  be provided by HHSC to contracted entities."

SECTION 2.22 MODIFICATION OF SECTION 10.9, DATA INTERFACE SUBSYSTEM

     Section 10.9.3 is replaced with the following language:

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<PAGE>

                           "10.9.3 Provider Network and Affiliation Files. The
                  HMO will supply network provider data to the Enrollment Broker
                  and Claims Administrator. This data will consist of a Provider
                  Network File and a Provider Affiliation File. The HMO will
                  submit the Provider Network File to the Enrollment Broker and
                  the Provider Affiliation File to the Claims Administrator.
                  Both files shall accomplish the following objectives:

                           1. Provide identifying information for all managed
                  care providers (e.g. name, address, etc.).

                           2. Maintain history on provider
                  enrollment/disenrollment.

                           3. Identify PCP capacity.

                           4. Identify any restrictions (e.g., age, sex, etc.).

                           5. Identify number and types of specialty providers
                  available to Members.

                           6. Provide other (Master Provider File) information
                  identified by HHSC."

SECTION 2.23 MODIFICATION OF SECTION 10.11, YEAR 2000 (Y2K) COMPLIANCE

     Section 10.11 is deleted in its entirety.

SECTION 2.24 ADDITION OF SECTION 10.12, HEALTH INSURANCE PORTABILITY AND
ACCOUNTABILITY ACT (HIPAA) COMPLIANCE.

     Section 10.12 is added as follows:

                           "10.12 Health Insurance Portability and
                  Accountability Act (HIPAA) Compliance. HMO's system must
                  comply with applicable certificate of coverage and data
                  specification and reporting requirements promulgated pursuant
                  to the Health Insurance Portability and Accountability Act
                  (HIPPA) of 1996, P.L. 104-191 (August 21, 1996), as amended or
                  modified.

SECTION 2.25 MODIFICATION OF SECTION 12.1., FINANCIAL REPORTS

     Sections 12.1.4, 12.1.11, and 12.13 are replaced with the following
language, and Section 12.14 is added.
Sections 12.1.2, 12.1.3, 12.1.7 and 12.1.10 are deleted in their entirety.

                      12.1.2        [Deleted]

                      12.1.3        [Deleted]

                      12.1.4        Final MCFS Reports. HMO must file two final
                 MCFS Reports for each of the following:

                           -        The initial two-year contract period (SFY
                                    2000-2001),

                           -        The first one-year contract extension period
                                    (SFY 2002), and

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                           o        This second one-year contract extension
                                    period (SFY 2003).

                           The first final report must reflect expenses incurred
                  during each contract period and paid through the 90th day
                  after the end of the contract period. The first final report
                  must be filed on or before the 120th day after the end of each
                  contract period. The second final report must reflect expenses
                  incurred during each contract period and paid through the
                  334th day after the end of the contract period. The second
                  final report must be filed on or before the 365th day after
                  the end of each contract period.

                           . . . .

                           12.1.7 [Deleted]

                           . . . .

                           12.1.10 [Deleted]

                           12.1.11 IBNR Plan. HMO must furnish a written IBNR
                  Plan to manage incurred-but-not-reported (IBNR) expenses, and
                  a description of the method of insuring against insolvency,
                  including information on all existing or proposed insurance
                  policies. The Plan must include the methodology for estimating
                  IBNR. The plan and description must be submitted to HHSC no
                  later than 60 days after the effective date of this contract.
                  Changes to the IBNR plan and description must be submitted to
                  HHSC no later than 30 days before changes to the plan are
                  implemented by HMO.

                           . . . .

                           12.1.13 Each report required under this Article must
                  be mailed to: Medicaid HMO Contract Deliverables Manager, HEDS
                  Division, Texas Health and Human Services Commission, P.O. Box
                  13247, Austin, Texas 78711-3247 (Exception: The MCFS Report
                  may be submitted to HHSC via E-mail to
                  deliver@hhsc.state.tx.us).

                           12.1.14 Bonus and/or Incentive Payment Plan. The HMO
                  must furnish a written Bonus and/or Incentive Payments Plan to
                  HHSC to determine whether such payments are allowable
                  administrative expenses in accordance with Appendix L, "Cost
                  Principles for Administrative Expenses, 11. Compensation for
                  Personnel Services, i. Bonuses and Incentive Payments." The
                  written plan must include a description of the plan's criteria
                  for establishing bonus and/or incentive payments, the
                  methodology to calculate bonus and/or incentive payments, and
                  the timing as to when these bonus and/or incentive payments
                  are to be paid. The plan and description must be submitted to
                  HHSC for approval no later than 30 days after the execution of
                  the contract and any contract renewal. If the HMO revises the
                  Bonus and/or Incentive Payment Plan, the HMO must submit the
                  revised plan to HHSC for approval prior to implementing the
                  plan."

SECTION 2.26 MODIFICATION OF SECTION 12.4, SUMMARY REPORT OF PROVIDER COMPLAINTS

     Section 12.4 is replaced with the following language:

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                           "12.4 HMO must submit a Summary Report of Provider
                  Complaints. HMO must also reports complaints submitted to its
                  subcontracted risk groups (e.g., IPAs). The complaint report
                  format must be submitted not later than 45 days following the
                  end of the state fiscal quarter in a format specified by
                  HHSC."

SECTION 2.27 MODIFICATION OF SECTION 12.6, MEMBER COMPLAINTS

     Section 12.6 is replaced with the following language:

                           "12.6 HMO must submit a quarterly summary report of
                  Member complaints. HMO must also report complaints submitted
                  to its subcontracted risk groups (e.g., IPAs). The complaint
                  report must be submitted not later than 45 days following the
                  end of the state fiscal quarter in a format specified by
                  HHSC."

SECTION 2.28 MODIFICATION OF SECTION 12.13, EXPEDITED PRENATAL OUTREACH REPORT

     Section 12.13 is deleted in its entirety.

SECTION 2.29 ADDITION OF SECTION 12.14, MEMBER HOTLINE PERFORMANCE REPORT

     Section 12.14 is added as follows:

                           "12.14 MEMBER HOTLINE PERFORMANCE REPORT

                           HMO must submit, on a monthly basis, a Member Hotline
                  Performance Report that contains all required elements set out
                  in Article 3.7 of this Agreement in a formant approved by
                  HHSC. The report is due on the 30th of the month following the
                  end of each month."

SECTION 2.30 ADDITION OF SECTION 12.15, SUBMISSION OF STAR DELIVERABLES/REPORTS

     Section 12.15 is added as follows:

                           "12.15 SUBMISSION OF STAR DELIVERABLES/REPORTS

                           12.15.1 Electronic Mail. STAR deliverables and
                  reports should be submitted to HHSC via electronic mail unless
                  HHSC expressly provides that they must be submitted in a
                  different manner. Reports and deliverables that may not be
                  submitted electronically include, but are not limited to:
                  Encounter Data, Supplemental Delivery Payment data, UDT data,
                  and certain Member Materials.

                           12.15.1.1 The e-mail address for deliverables
                                     submission is deliver@hhsc.state.tx.us.

                           12.15.1.2 Electronic Mail Restrictions:

                           File Size: E-mail file size is limited to 2.5 MB.
                  Files larger than that will need to be compressed (zip file)
                  or split into multiple files for submission.

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<PAGE>

                           Confidentiality: Routine STAR deliverables/reports
                  should not contain any member specific data that would be
                  considered confidential.

                           12.15.2 FQHC and RHC Deliverables. HMO may submit
                  FQHC and RHC deliverables by uploading the required
                  information to the Claims Administrator's Bulleting Board
                  System (BBS). The uploaded data must contain a unique 8-digit
                  control number. HMO should format the 8-digit control number
                  as follows:

                           o        2 digit plan code identification number;

                           o        Julian date; and then

                           o        HMO's 3-digit report number (i.e., HMO's
                                    first report will be 001).

                           After uploading the data to the BBS, the HMO must
                  notify HHSC via e-mail that it has uploaded the data, and
                  include the name of the file and recipient directory. HMO must
                  also mail signed original report summaries, including the
                  corresponding 8-digit control number, to HHSC within three (3)
                  business days after uploading the data to the BBS.

                           12.15.3 Special Submission Needs. In special cases
                  where other submission methods are necessary, HMO must contact
                  the assigned Health Plan Manager for authorization and
                  instructions.

                           12.15.4 Deliverables due via Mail. HMO should mail
                  reports and deliverables that must be submitted by mail to the
                  following address: General Mail: Texas Health & Human Services
                  Commission HEDS Contract Deliverables P.O. Box 13247 Austin,
                  Texas 78711-3247

                      Overnight Mail:
                      Texas Health & Human Services Commission
                      HEDS Contract Deliverables
                      12555 Riata Vista Circle
                      Austin, TX 78727

                           12.15.5 Texas Department of Insurance (TDI). The
                  submission of deliverables/reports to HHSC does not relieve
                  the Plan of any reporting requirements/responsibility with
                  TDI. The Plan should continue to report to TDI as they have in
                  the past."

SECTION 2.31 MODIFICATIONS TO SECTION 13.1, CAPITATION AMOUNTS

     Section 13.1.7.1 is added:

                           "13.1.7.1 HMO rates for FY 2002 and FY 2003 include
                  pass through funds for providers, as appropriated by the 77th
                  Texas Legislature. HMO must file reports on pass through
                  methodology expenditures as requested by HHSC."

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<PAGE>

SECTION 2.32 MODIFICATION OF SECTION 13.2,  EXPERIENCE REBATE TO THE STATE

     Sections 13.2.1, 13.2.2.1, 13.2.3, and 13.2.5 are replaced with the
following language:

                           "13.2.1 For the Contract Period, HMO must pay to HHSC
                  an experience rebate calculated in accordance with the tiered
                  rebate method listed below based on the excess of allowable
                  HMO STAR revenues over allowable HMO STAR expenses as set
                  forth in Appendix I, as reviewed and confirmed by HHSC. HHSC
                  reserves the right to have an independent audit performed to
                  verify the information provided by HMO.

<Table>
<Caption>

                             GRADUATED REBATE METHOD
--------------------------------------------------------------------------------
NET INCOME BEFORE TAXES
  AS A PERCENTAGE OF
      REVENUES                     HMO SHARE                    STATE SHARE
-----------------------     -----------------------        ---------------------
<S>                                 <C>                              <C>
0% - 3%                              100%                             0%
Over 3% - 7%                          75%                            25%
Over 7% - 10%                         50%                            50%
Over 10% - 15%                        25%                            75%
Over 15%                               0%                           100%
</Table>

                           13.2.2.1 The experience rebate for the HMO shall be
                  calculated by applying the experience rebate formula in
                  Article 13.2.1 to the sum of the net income before taxes for
                  all STAR Medicaid service areas contracted between the State
                  and HMO.

                           13.2.3 Experience rebate will be based on a pre-tax
                  basis. Expenses for value-added services are excluded from the
                  determination of Net Income Before Taxes reported in the Final
                  MCFS Report; however, HMO may subtract from Net Income Before
                  Taxes, expenses incurred for value added services for the
                  experience rebate calculations.

                           13.2.5 There will be two settlements for payment(s)
                  of the experience rebate for SFY 2000-2001, two settlements
                  for payment(s) for the experience rebate for SFY 2002, and two
                  settlements for payment(s) for the experience rebate for SFY
                  2003. The first settlement for the specified contract period
                  shall equal 100 percent of the experience rebate as derived
                  from Net Income Before Taxes less the value-added services
                  expenses in the first final MCFS Report and shall be paid on
                  the same day the first final MCFS Report is submitted to HHSC
                  for the specified time period. The second settlement shall be
                  an adjustment to the first settlement and shall be paid to
                  HHSC on the same day that the second final MCFS Report is
                  submitted to HHSC for that specified time period if the
                  adjustment is a payment from HMO to HHSC. If the adjustment is
                  a payment from HHSC to HMO, HHSC shall pay such adjustment to
                  HMO within thirty (30) days of receipt of the second final
                  MCFS Report. HHSC or its agent may audit the MCFS report. If
                  HHSC determines that corrections to the MCFS reports are
                  required, based on a audit of other documentation acceptable
                  to HHSC, to determine an adjustment to the amount of the
                  second settlement, then

HHSC Contract 529-03-044
                                 Page 14 of 17

<PAGE>

                  final adjustment shall be made within three years from the
                  date that HMO submits the second final MCFS report. HMO must
                  pay the first and second settlements on the due dates for the
                  first and second final MCFS reports respectively as identified
                  in Article 12.1.4. HHSC may adjust the experience rebate if
                  HHSC determines HMO has paid affiliates amounts for goods or
                  services that are higher than the fair market value of the
                  goods and services in the service area. Fair market value may
                  be based on the amount HMO pays a non-affiliate(s) or the
                  amount another HMO pays for the same or similar service in the
                  service area. HHSC has final authority in auditing and
                  determining the amount of the experience rebate."

SECTION 2.33 SECTION 13.3, PERFORMANCE OBJECTIVES

     Section 13.3.9 is replaced with the following language:

                           "13.3.9 The performance objective allocation for HMO
                  shall be assigned to each performance objective, described in
                  Appendix K, in accordance with the following percentages:

<Table>
<Caption>
          EPSDT SCREENS INCENTIVE           PERCENT OF PERFORMANCE OBJECTIVE FUND
------------------------------------      ------------------------------------------
<S>                                       <C>
           1. <12 months                                   12%

           2. 12 to 24 months                              12%

           3. 25 months - 20 years                         20%
</Table>

<Table>
<Caption>
        IMMUNIZATIONS                     PERCENT OF PERFORMANCE OBJECTIVE INCENTIVE FUND
---------------------------------       -------------------------------------------------
<S>                                     <C>
     4. <12 months                                         17%

     5. 12 to 24 months                                    12%
</Table>

<Table>
<Caption>

        PREGNANCY VISITS                   PERCENT OF PERFORMANCE OBJECTIVE INCENTIVE FUND
----------------------------------      ----------------------------------------------------
<S>                                     <C>
     6.  Initial prenatal exam                            15%

     7. Postpartum visit                                  12%
</Table>

SECTION 2.34 MODIFICATION OF SECTION 13.5, NEWBORN AND PREGNANT WOMEN PAYMENT
PROVISIONS

     Sections 13.5.1.1, 13.5.3 and 13.5.6 are replaced with the following
language:

                           "13.5.1.1 The mother of the newborn Member may
                  request that the newborn's health plan coverage be changed to
                  another HMO during the first 90 days following the date of
                  birth, but may only do so through the Medicaid managed care
                  Enrollment Broker.

HHSC Contract 529-03-044
                                 Page 15 of 17

<PAGE>

                           13.5.3 All non-TP45 newborns whose mothers are HMO
                  Members at the time of the birth will be retroactively
                  enrolled into the HMO by TDHS Data Control except as outlined
                  in Article 13.5.4.

                           13.5.6 HMO is responsible for payment for all covered
                  services provided to TP40 members by in-network or
                  out-of-network providers from the date of enrollment in HMO,
                  but prior to HMO receiving TP40 Member on monthly capitation
                  file. HMO must waive requirement for prior authorization (or
                  grant retroactive prior authorization) for medically necessary
                  services provided from the date of enrollment in HMO, but
                  prior to HMO receiving TP40 member on monthly capitation
                  file."

SECTION 2.35 MODIFICATION OF SECTION 14.3, NEWBORN ENROLLMENT

     Section 14.3.1.1 is replaced with the following language:

                           "14.3.1.1 A mother of a newborn Member may request a
                  plan change for her newborn during the first 90 days by
                  contacting the Enrollment Broker. If a change is approved, the
                  Enrollment Broker will notify both plans involved in the
                  process. If no alternative to the plan change can be reached,
                  the Enrollment Broker will notify the HMO of the newborn plan
                  change request received from the mother."

SECTION 2.36 MODIFICATION OF SECTION 15.12, NOTICES

     Section 15.12 is replaced with the following language:

                           "Notice may be given by registered mail, facsimile,
                  and/or hand delivery. All notices to HHSC shall be addressed
                  to: Medicaid HMO Contract Deliverables Manager, HEDS Division,
                  Texas Health and Human Services Commission, P.O. Box 13247,
                  Austin, Texas 78711-3247, with a copy to the Contract
                  Administrator. Notices to HMO shall be addressed to
                  President/CEO, 2100 S. IH-35, Suite 202, Austin, TX 78704."

SECTION 2.37 MODIFICATION OF SECTION 18.1.6, TERMINATION BY HMO

     Section 18.1.6 is replaced with the following language:

                           "18.1.6 HMO may terminate this contract if HHSC fails
                  to pay HMO as required under Article 13 of this contract or
                  otherwise materially defaults in its duties and
                  responsibilities under this contract, or by giving notice no
                  later than 30 days after receiving the capitation rates for
                  the Contract Period. Retaining premium, recoupment, sanctions,
                  or penalties that are allowed under this contract or that
                  result from HMO's failure to perform or HMO's default under
                  the terms of this contract is not cause for termination."

SECTION 2.38 MODIFICATION OF SECTION 18.10, REVIEW OF REMEDY OR REMEDIES TO BE
IMPOSED

     Section 18.10 is replaced with the following language:

                           "18.10.2 HMO and HHSC must attempt to informally
                  resolve a dispute. If HMO and HHSC are unable to informally
                  resolve a dispute,

HHSC Contract 529-03-044
                                 Page 16 of 17

<PAGE>

                  HMO must notify the HEDS Manager and Director of Medicaid/CHIP
                  Operations that HMO and HHSC cannot agree. The Director of
                  Medicaid/CHIP Operations will refer the dispute to the State
                  Medicaid Director who will appoint a committee to review the
                  dispute under HHSC's dispute resolution procedures. The
                  decision of the dispute resolution committee will be HHSC's
                  final administrative decision."

SECTION 2.39 MODIFICATION OF SECTION 19.1, CONTRACT TERM

     Section 19.1 is replaced with the following language:

                           "19.1 The effective date of this contract is August
                  31, 1999. This contract will terminate on August 31, 2003
                  unless extended or terminated earlier as provided for
                  elsewhere in this contract."

SECTION 2.40 MODIFICATIONS TO CONTRACT APPENDICES.

         The following appendices are replaced with the versions attached to
this Amendment:

                           -        Appendix B, HUB

                           -        Appendix C, Value-added Services (for
                                    certain HMOs)

                           -        Appendix F, Texas Trauma Facilities

                           -        Appendix G, Texas Hemophilia Centers

                           -        Appendix I, Financial Statistical Report

                           -        Appendix K, Preventive Health Performance
                                    Objectives

                     ARTICLE 3. REPRESENTATIONS AND AGREEMENT OF THE PARTIES

     The Parties contract and agree that the terms of the Agreement will remain
in effect and continue to govern except to the extent modified in this
Amendment.

     By signing this Amendment, the Parties expressly understand and agree that
this Amendment is hereby made a part of the Agreement as though it were set out
word for word in the Agreement.

     IN WITNESS HEREOF, HHSC AND THE HMO HAVE EACH CAUSED THIS AMENDMENT TO BE
SIGNED AND DELIVERED BY ITS DULY AUTHORIZED REPRESENTATIVE.

<Table>
<Caption>
           SUPERIOR HEALTH PLAN, INC.                    HEALTH & HUMAN SERVICES COMMISSION

<S>                                                    <C>
     By: /s/ Christopher Bowers                        By:
        ----------------------------------                -----------------------------------
        Christopher Bowers                                Don Gilbert
        President & CEO                                   Commissioner

     Date: 8/22/02                                     Date:
          -------------------------------                   ---------------------------------
</Table>

HHSC Contract 529-03-044
                                 Page 17 of 17

<PAGE>

                                                   HHSC CONTRACT NO. 529-03-044

STATE OF TEXAS

COUNTY OF TRAVIS

                                  AMENDMENT 10
                          TO THE AGREEMENT BETWEEN THE
                       HEALTH & HUMAN SERVICES COMMISSION
                                       AND
                           SUPERIOR HEALTH PLAN, INC.
                               FOR HEALTH SERVICES
                                     TO THE
                              MEDICAID STAR PROGRAM
                                     IN THE
                          EL PASO SERVICE DELIVERY AREA

      THIS CONTRACT AMENDMENT (the "Amendment") is entered into between the
HEALTH & HUMAN SERVICES COMMISSION ("HHSC"), an administrative agency within the
executive department of the State of Texas, and SUPERIOR HEALTH PLAN, INC.
("CONTRACTOR"), a health maintenance organization organized under the laws of
the State of Texas, possessing a certificate of authority issued by the Texas
Department of Insurance to operate as a health maintenance organization, and
having its principal office at 2100 S. IH-35, Suite 202, Austin, Texas 78704.
HHSC and CONTRACTOR may be referred to in this Amendment individually as a
"Party" and collectively as the "Parties."

     The Parties hereby agree to amend their Agreement as set forth in Article 2
of this Amendment.

                               ARTICLE 1. PURPOSE.

SECTION 1.01 AUTHORIZATION.

     This Amendment is executed by the Parties in accordance with Article 15.2
of the Agreement.

SECTION 1.02 GENERAL EFFECTIVE DATE OF CHANGES.

     This Amendment is effective November 1, 2002.

                   ARTICLE 2. AMENDMENT TO THE OBLIGATIONS OF THE PARTIES

SECTION 2.01 MODIFICATION OF ARTICLE 2 DEFINITIONS

         The following term is added to amend the definitions set forth in
Article 2:

                           "EXPERIENCE REBATE PERIOD means each period within
                  the Contract Period related to the calculations and
                  settlements of Experience Rebates to HHSC described in Section
                  13.2. The Contract Period consists of the following Experience
                  Rebate Periods:

                           -        September 1, 1999 through August 31, 2001
                                    (1st Experience Rebate Period)

                           -        September 1, 2001 through August 31, 2002
                                    (2nd Experience Rebate Period)

                           -        September 1, 2002 through August 31, 2003
                                    (3rd Experience Rebate Period)"

                                   Page 1 of 4
HHSC Contract 529-03-044

<PAGE>

SECTION 2.02 MODIFICATION TO SECTION 13.2, EXPERIENCE REBATE TO STATE

        Section 13.2 is replaced with the following language:

                           "13.2.1 HMO must pay to HHSC an experience rebate for
                  each Experience Rebate Period. HMO will calculate the
                  experience rebate in accordance with the tiered rebate formula
                  listed below based on Net Income Before Taxes (excess of
                  allowable revenues over allowable expenses) as set forth in
                  Appendix I. The HMO's calculations are subject to HHSC
                  approval, and HHSC reserves the right to have an independent
                  audit performed to verify the information provided by HMO.

<Table>
<Caption>

                            GRADUATED REBATE FORMULA
--------------------------------------------------------------------------------
         NET INCOME BEFORE TAXES
         AS A PERCENTAGE OF TOTAL
                REVENUES                  HMO SHARE                HHSC SHARE
----------------------------------   --------------------     ------------------
<S>         <C>                             <C>                        <C>
            0% - 3%                         100%                       0%
            Over 3% - 7%                     75%                      25%
            Over 7% - 10%                    50%                      50%
            Over 10% - 15%                   25%                      75%
            Over 15%                          0%                     100%
</Table>

                           13.2.2 Carry Forward of Prior Experience Rebate
                  Period Losses: Losses incurred for one Experience Rebate
                  Period can only be carried forward as an offset to Net Income
                  Before Taxes in the next Experience Rebate Period.

                           13.2.2.1 HMO shall calculate the experience rebate by
                  applying the experience rebate formula in Article 13.2.1 as
                  follows:

                           For the 1st Experience Rebate Period, to the Net
                  Income Before Taxes for each STAR Medicaid service area
                  contracted between HHSC and HMO. The HMO will separately
                  calculate the experience rebate for each service area, and
                  losses in one service area cannot be used to offset Net Income
                  Before Taxes in another service area. Losses from the 1st
                  Experience Rebate Period can be carried forward to the 2nd
                  Experience Rebate Period for the same service area.

                           For the 2nd Experience Rebate Period, to the sum of
                  the Net Income Before Taxes for all STAR Medicaid service
                  areas contracted between HHSC and HMO. Losses from the 2nd
                  Experience Rebate Period can be carried forward to the 3rd
                  Experience Rebate Period.

                           For the 3rd Experience Rebate Period, to the sum of
                  the Net Income Before Taxes for all CHIP, STAR Medicaid, and
                  STAR+PLUS Medicaid service areas contracted between HHSC or
                  TDHS and HMO.

                           13.2.3 Experience rebate will be based on a pre-tax
                  basis. Expenses for value-added services are excluded from the
                  determination

                                   Page 2 of 4
HHSC Contract 529-03-044

<PAGE>

                  of Net Income Before Taxes reported in the Final MCFS Report;
                  however, HMO may subtract from Net Income Before Taxes,
                  expenses incurred for value added services for the experience
                  rebate calculations.

                           13.2.4 Population-Based Initiatives (PBIs) and
                  Experience Rebates: HMO may subtract from an experience rebate
                  owed to HHSC, expenses for population-based health initiatives
                  that have been approved by HHSC. A PBI is a project or program
                  designed to improve some aspect of quality of care, quality of
                  life, or health care knowledge for the Medicaid population
                  that may also benefit the community as a whole. Value-added
                  service does not constitute a PBI. Contractually required
                  services and activities do not constitute a PBI.

                           13.2.5 There will be two settlements for payment(s)
                  of the experience rebate for the 1st Experience Rebate Period,
                  two settlements for payment(s) of the experience rebate for
                  the 2nd Experience Rebate Period, and two settlements for
                  payment(s) of the experience rebate for the 3rd Experience
                  Rebate Period. Settlement payments are payable to HHSC. The
                  first settlement for the specified Experience Rebate Period
                  shall equal 100 percent of the experience rebate as derived
                  from Net Income Before Taxes reduced by any value-added
                  services expenses in the first Final MCFS Report and shall be
                  paid on the same day that the first Final MCFS Report is
                  submitted to HHSC for the specified time period. The second
                  settlement shall be an adjustment to the first settlement and
                  shall be paid on the same day that the second Final MCFS
                  Report is submitted to HHSC for that specified time period if
                  the adjustment is a payment from HMO to HHSC. If the
                  adjustment is a payment from HHSC to HMO, HHSC shall pay such
                  adjustment to HMO within thirty (30) days of receipt of the
                  second Final MCFS Report. HHSC or its agent may audit the MCFS
                  Reports. If HHSC determines that corrections to the MCFS
                  Reports are required, based on an audit of other documentation
                  acceptable to HHSC, to determine an adjustment to the amount
                  of the second settlement, then final adjustment shall be made
                  within three (3) years from the date that HMO submits the
                  second Final MCFS Report. HMO must pay the first and second
                  settlements on the due dates for the first and second Final
                  MCFS Reports, respectively, as identified in Article 12.1.4.
                  HHSC may adjust the experience rebate if HHSC determines HMO
                  has paid (an) affiliate(s) amounts for goods or services that
                  are higher than the fair market value of the goods and
                  services in the service area. Fair market value may be based
                  on the amount HMO pays (a) non-affiliate(s) or the amount
                  another HMO pays for the same or similar goods and services in
                  the service area. HHSC has final authority in auditing and
                  determining the amount of the experience rebate."

                   ARTICLE 3. REPRESENTATIONS AND AGREEMENT OF THE PARTIES

     The Parties contract and agree that the terms of the Agreement will remain
in effect and continue to govern except to the extent modified in this
Amendment.

     By signing this Amendment, the Parties expressly understand and agree that
this Amendment is hereby made a part of the Agreement as though it were set out
word for word in the Agreement.

                                   Page 3 of 4
HHSC Contract 529-03-044

<PAGE>

     IN WITNESS HEREOF, HHSC AND THE CONTRACTOR HAVE EACH CAUSED THIS AMENDMENT
TO BE SIGNED AND DELIVERED BY ITS DULY AUTHORIZED REPRESENTATIVE.

<Table>
<Caption>
         SUPERIOR HEALTH PLAN, INC.               HEALTH & HUMAN SERVICES COMMISSION

<S>                                              <C>
By: /s/ Christopher Bowers                       By:
   ---------------------------------                ----------------------------------
   Christopher Bowers                               Don A. Gilbert
   President and CEO                                Commissioner

Date: 11/8/02                                    Date:
     ------------------------------                   --------------------------------
</Table>

                                   Page 4 of 4
HHSC Contract 529-03-044

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