<PAGE>
                                                                   EXHIBIT 10.5

                        INCENTIVE STOCK OPTION AGREEMENT
                                   under the
                          ACCREDO HEALTH, INCORPORATED
                         2002 LONG-TERM INCENTIVE PLAN

         Optionee:                      Barbara Biehner                   .
                  ---------------------------------------------------------
         Number Shares Subject to Option:              45,378             .
                                         ----------------------------------
         Exercise Price per Share:                     $47.55             .
                                  -----------------------------------------

         Date of Grant:                June 24, 2002
                       ----------------------------------------------------
         1.       Grant of Option.  Accredo Health, Incorporated (the
"Company") hereby grants to the Optionee named above (the "Optionee"), under
the Accredo Health, Incorporated 2002 Long-Term Incentive Plan (the "Plan"), an
Incentive Stock Option to purchase, on the terms and conditions set forth in
this agreement (this "Option Agreement"), the number of shares indicated above
of the Company's $0.01 par value common stock (the "Stock"), at the exercise
price per share set forth above (the "Option"). Capitalized terms used herein
and not otherwise defined shall have the meanings assigned such terms in the
Plan.

         2.       Vesting of Option.  Unless the exercisability of the Option is
accelerated in accordance withArticle 9 of the Plan, the Option shall vest
(become exercisable) in accordance with the following schedule:

<TABLE>
<CAPTION>
                                                              Cumulative No. of
                                                              -----------------
                                  No. of Option Shares    Option Shares Vested on
                                  --------------------    -----------------------
         Vesting Date            Vested on Vesting Date         Vesting Date
         ------------            ----------------------         ------------
<S>                              <C>                      <C>
1st anniversary of grant date              25%                       25%
2nd anniversary of grant date              25%                       50%
3rd anniversary of grant date              25%                       75%
4th anniversary of grant date              25%                      100%
</TABLE>

         3.       Period of Option and Limitations on Right to Exercise. The
Option will, to the extent not previously exercised, lapse under the earliest
of the following circumstances; provided, however, that the Committee may,
prior to the lapse of the Option under the circumstances described in
paragraphs (b) and (c) below, provide in writing that the Option will extend
until a later date, but if the Option is exercised after the dates specified in
paragraphs (b) and (c) below, it will automatically become a Non-Qualified
Stock Option:
<PAGE>
         (a)      The Option shall lapse as of 5:00 p.m.,  Eastern Time, on
the tenth anniversary of the date of grant (the "Expiration Date").

         (b)      The Option shall lapse three months after the Optionee's
termination of employment for any reason other than the Optionee's death or
Disability; provided, however, that if the Optionee's employment is terminated
by the Company for cause (as defined below) or by the Optionee without the
consent of the Company, the Option shall lapse immediately.

         (c)      If the Optionee's employment terminates by reason of
Disability, the Option shall lapse one year after the date of the Optionee's
termination of employment.

         (d)      If the Optionee dies while employed, or during the
three-month period described in subsection (b) above or during the one-year
period described in subsection (c) above and before the Option otherwise
lapses, the Option shall lapse one year after the date of the Optionee's death.
Upon the Optionee's death, the Option may be exercised by the Optionee's
beneficiary.

         If the Optionee or his beneficiary exercises an Option after
termination of employment, the Option may be exercised only with respect to the
shares that were otherwise vested on the Optionee's termination of employment
(including vesting by acceleration in accordance with Article 9 of the Plan).

         The term "cause" as used herein shall mean cause as defined in your
employment agreement, if any. If no agreement exists where cause is defined,
cause shall mean (i) gross neglect of duty, (ii) prolonged absence from duty
without the consent of the Company, (iii) intentionally engaging in any
activity which is in conflict with or adverse to the business or other
interests of the Company, (iv) willful misconduct, misfeasance or malfeasance
of duty which is reasonably determined to be detrimental to the Company.

         4.       Exercise of Option. The Option shall be exercised by written
notice on such forms as the Committee may approve, such as the forms provided
by the Company's stock plan administrator AST Stockplan, Inc. Unless the
exercise is a broker-assisted "cashless exercise" as described below, such
written notice shall be accompanied by full payment in cash, shares of Stock
previously acquired by the Optionee, or any combination thereof, for the number
of shares specified in such written notice; provided, however, that if shares
of Stock are used to pay the exercise price, such shares must have been held by
the Optionee for at least six months. The Fair Market Value of the surrendered
Stock as of the last trading day immediately prior to the exercise date shall
be used in valuing Stock used in payment of the exercise price. To the extent
permitted under Regulation T of the Federal Reserve Board, and subject to
applicable securities laws, the Option may be exercised through a broker in a
so-called "cashless exercise" whereby the broker sells the Option shares and
delivers cash sales proceeds to the Company in payment of the exercise price.
In such case, the date of exercise shall be

                                      - 2 -
<PAGE>
deemed to be the date on which notice of exercise is received by the Company
and the exercise price shall be delivered to the Company on the settlement date.

         Subject to the terms of this Option Agreement, the Option may be
exercised at any time and without regard to any other option held by the
Optionee to purchase stock of the Company.

         5.       Limitation of Rights.  The Option does not confer to the
Optionee or the Optionee's personal representative any rights of a shareholder
of the Company unless and until shares of Stock are in fact issued to such
person in connection with the exercise of the Option. Nothing in this Option
Agreement shall interfere with or limit in any way the right of the Company or
any Subsidiary to terminate the Optionee's employment at any time, nor confer
upon the Optionee any right to continue in the employ of the Company or any
Subsidiary.

         6.       Stock Reserve.  The Company shall at all times during the
term of this Option Agreement reserve and keep available such number of shares
of Stock as will be sufficient to satisfy the requirements of this Option
Agreement.

         7.       Restrictions on Transfer and Pledge.  The Option may not be
pledged, encumbered, or hypothecated to or in favor of any party other than the
Company or a Parent or Subsidiary, or be subject to any lien, obligation, or
liability of the Optionee to any other party other than the Company or a Parent
or Subsidiary. The Option is not assignable or transferable by the Optionee
other than by will or the laws of descent and distribution. The Option may be
exercised during the lifetime of the Optionee only by the Optionee.

         8.       Restrictions on Issuance of Shares.  If at any time the Board
shall determine in its discretion, that listing, registration or qualification
of the shares of Stock covered by the Option upon any securities exchange or
under any state or federal law, or the consent or approval of any governmental
regulatory body, is necessary or desirable as a condition to the exercise of
the Option, the Option may not be exercised in whole or in part unless and
until such listing, registration, qualification, consent or approval shall have
been effected or obtained free of any conditions not acceptable to the Board.

         9.       Plan Controls.  The terms contained in the Plan are
incorporated into and made a part of this Option Agreement and this Option
Agreement shall be governed by and construed in accordance with the Plan. In
the event of any actual or alleged conflict between the provisions of the Plan
and the provisions of this Option Agreement, the provisions of the Plan shall
be controlling and determinative.

         10.      Successors.  This Option Agreement shall be binding upon
any successor of the Company, in accordance with the terms of this Option
Agreement and the Plan.

                                      - 3 -
<PAGE>
         11.      Severability.  If any one or more of the provisions
contained in this Option Agreement are invalid, illegal or unenforceable, the
other provisions of this Option Agreement will be construed and enforced as if
the invalid, illegal or unenforceable provision had never been included.

         12.      Notice.  Notices and communications under this Option
Agreement must be in writing and either personally delivered or sent by
registered or certified United States mail, return receipt requested, postage
prepaid.  Notices to the Company must be addressed to:

                  Accredo Health, Incorporated
                  1640 Century Center Pkwy, Suite 101
                  Memphis, TN  38134
                  Attn: Secretary

or any other address designated by the Company in a written notice to the
Optionee. Notices to the Optionee will be directed to the address of the
Optionee then currently on file with the Company, or at any other address given
by the Optionee in a written notice to the Company.

         13.      Interpretation.  It is the intent of the parties hereto that
the Option qualify for incentive stock option treatment pursuant to, and to the
extent permitted by, Section 422 of the Code. All provisions hereof are
intended to have, and shall be construed to have, such meanings as are set
forth in applicable provisions of the Code and Treasury Regulations to allow
the Option to so qualify.

         14.      Restrictive Covenant and Confidentiality Agreement.  You
acknowledge and agree that as a condition to the grant of any options pursuant
to the Plan that you are bound by and have executed a Restrictive Covenant and
Confidentiality Agreement with Accredo Health, Inc. or one of its Subsidiaries;
receipt of a copy of which you hereby acknowledge.

         15.      Binding Effect.  The grant of the Options referenced herein
is subject to Optionee being bound by all of the terms set out in this
Agreement.  The acceptance of the Options and the exercise of any right
hereunder, including but not being limited to the giving of written notice to
exercise any Option, shall constitute conclusive evidence of acceptance by the
Optionee of all of the terms and conditions set out herein, and Optionee by
such actions shall be bound by, and shall be deemed to have agreed to these
terms and conditions, the same as if Optionee had affixed his or her signature
to this Incentive Stock Option Agreement.

                                      - 4 -
<PAGE>
         IN WITNESS WHEREOF, Accredo Health, Incorporated, acting by and
through its duly authorized officer, has caused this Option Agreement to be
executed as of the day and year first above written.

                               ACCREDO HEALTH, INCORPORATED

                               By: /s/ Thomas W. Bell, Jr.
                                   --------------------------------------------
                               Name:   Thomas W. Bell, Jr.
                               Title:  Sr. Vice President and
                                       General Counsel

                                      - 5 -