<PAGE>

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                            -----------------------

                                   FORM 10-Q

                   Quarterly Report Under Section 13 or 15(d)
                     of the Securities Exchange Act of 1934

For Quarter Ended June 30, 2000                   Commission File Number 0-19373
                   -----------------------------------------

                                BIOMATRIX, INC.
             (Exact name of registrant as specified in its charter)

          Delaware                                        13-3058261
(State or other jurisdiction of                (IRS Employer Identification No.)
incorporation or organization)

                   65 Railroad Avenue, Ridgefield, N.J. 07657
              (Address of principal executive offices) (Zip Code)

                                 (201) 945-9550
              (Registrant's telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.

                             Yes  X          No
                                 ---            ---

The number of shares outstanding of the issuer's common stock as of the latest
practicable date:

             Class                              July 31, 2000
             -----                              -------------
Common stock, $ 0.0001 par value                  23,492,164

<PAGE>

                                BIOMATRIX, INC.
                                ---------------
                               TABLE OF CONTENTS
                               -----------------

<TABLE>
<CAPTION>

                                                                         PAGE NO.
                                                                         --------
<S>                                                                     <C>
PART I.   FINANCIAL INFORMATION

          ITEM 1 - Unaudited Condensed Consolidated Financial Statements

          Condensed Consolidated Balance Sheets as of
          June 30, 2000 and December 31, 1999 (Unaudited).................   3

          Condensed Consolidated Statements of Operations for the Three
          and Six Months Ended June 30, 2000 and 1999 (Unaudited).........   4

          Condensed Consolidated Statements of Cash Flows for the
          Six Months Ended June 30, 2000 and 1999 (Unaudited).............   5

          Notes to Condensed Consolidated Financial Statements............   6

          ITEM 2

          Management's Discussion and Analysis of Financial
          Condition and Results of Operations.............................  12

PART II.  OTHER INFORMATION

          ITEM 1

          Legal Proceedings...............................................  18

          ITEM 6

          Exhibits and Reports on Form 8-K................................  18


          Signatures......................................................  19

</TABLE>


                                       2
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

                     CONDENSED CONSOLIDATED BALANCE SHEETS
                                  (Unaudited)
                 (in millions, except share and par value data)

<TABLE>
<CAPTION>

                                                                      June 30,  December 31,
                                                                        2000        1999
                                                                        ----        ----
<S>                                                                  <C>          <C>
     ASSETS
Current assets:
   Cash and cash equivalents ...................................      $   37.4     $  35.0
   Accounts receivable, less allowance for doubtful accounts ...          13.4        10.1
   Inventory, at lower of cost or market .......................           8.5         8.5
   License fees receivable .....................................           7.0        --
   Prepaid expenses and other current assets ...................           3.0         3.2
                                                                      --------     -------

          Total current assets .................................          69.3        56.8

Property, plant and equipment, net .............................          40.2        41.3
Other assets ...................................................           0.8         0.9
                                                                      --------     -------

          Total assets .........................................      $  110.3     $  99.0
                                                                      ========     =======

     LIABILITIES AND SHAREHOLDERS' EQUITY
Current liabilities:
   Accounts payable ............................................      $    1.2     $   1.3
   Accrued expenses ............................................          11.1         8.0
   Notes payable - current .....................................           0.9         0.6
                                                                      --------     -------

           Total current liabilities ...........................          13.2         9.9

Notes payable - long term ......................................          11.3        11.9
                                                                      --------     -------

           Total liabilities ...................................          24.5        21.8
                                                                      --------     -------

Commitments and contingent liabilities

Shareholders' equity:
   Preferred stock, 3,000 shares authorized; none issued .......          --          --
   Common stock, $.0001 par value; 60,000,000 shares authorized;
     23,529,950 and 22,374,366 issued and 23,437,656 and
     23,282,072 outstanding in 2000 and 1999, respectively .....           0.0         0.0
   Additional paid-in capital ..................................          83.6        82.7
   Notes receivable - related parties ..........................         (14.4)      (14.0)
   Retained earnings ...........................................          19.1        10.9
   Accumulated other comprehensive loss ........................          (1.6)       (1.5)
   Treasury stock, 92,294 shares of common stock at cost .......          (0.9)       (0.9)
                                                                      --------     -------

           Total shareholders' equity ..........................          85.8        77.2
                                                                      --------     -------

          Total liabilities and shareholders' equity ...........      $  110.3     $  99.0
                                                                      ========     =======

</TABLE>


   The accompanying notes are an integral part of the condensed consolidated
                             financial statements.


                                       3
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

                CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
                                  (Unaudited)
                 (in millions, except share and per share data)

<TABLE>
<CAPTION>

                                                             Three Months Ended                    Six Months Ended
                                                                   June 30,                            June 30,
                                                                   --------                            --------
                                                            2000              1999              2000              1999
                                                       --------------    --------------    --------------    --------------
<S>                                                   <C>               <C>               <C>               <C>
Revenues:
Net product sales ..................................   $         20.0    $         18.1    $         36.5    $         34.6
Income from licenses, royalties
  and research contracts ...........................              7.2               7.1               7.4               7.2
                                                       --------------    --------------    --------------    --------------

         Total revenues ............................             27.2              25.2              43.9              41.8
                                                       --------------    --------------    --------------    --------------

Costs and expenses:
Cost of goods sold .................................              6.0               5.2              11.0              10.1
Research and development expenses ..................              2.7               2.0               5.3               4.2
Selling, general and administrative expenses .......              6.2               4.6              14.7               8.5
                                                       --------------    --------------    --------------    --------------

         Total costs and expenses ..................             14.9              11.8              31.0              22.8
                                                       --------------    --------------    --------------    --------------

Income from operations .............................             12.3              13.4              12.9              19.0

Interest expense ...................................             (0.3)             (0.5)             (0.5)             (0.9)
Interest and miscellaneous income ..................              0.8               0.3               1.3               0.6
                                                       --------------    --------------    --------------    --------------

Income before taxes ................................             12.8              13.2              13.7              18.7

Provision for income taxes .........................              5.1               5.5               5.5               7.7
                                                       --------------    --------------    --------------    --------------

Net income .........................................   $          7.7    $          7.7    $          8.2    $         11.0
                                                       ==============    ==============    ==============    ==============


Net income per share:
     Basic .........................................   $         0.33    $         0.34    $         0.35    $         0.48
                                                       ==============    ==============    ==============    ==============
     Weighted average shares outstanding ...........       23,388,175        22,931,602        23,340,298        22,862,843
                                                       ==============    ==============    ==============    ==============

     Diluted .......................................   $         0.31    $         0.31    $         0.34    $         0.45
                                                       ==============    ==============    ==============    ==============
     Weighted average shares outstanding ...........       24,933,030        25,315,224        24,489,291        25,240,877
                                                       ==============    ==============    ==============    ==============

</TABLE>


   The accompanying notes are an integral part of the condensed consolidated
                             financial statements.


                                       4
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

                CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
                                  (Unaudited)
                                 (in millions)

<TABLE>
<CAPTION>

                                                                      Six Months Ended
                                                                          June 30,
                                                                     ------------------
                                                                        2000       1999
                                                                     -------    -------
<S>                                                                 <C>        <C>
Cash flows from operating activities:
     Net income ..................................................   $   8.2    $  11.0
     Adjustments to reconcile net income to net cash
       provided by operating activities:
       Depreciation and amortization .............................       1.9        1.6
       Stock option compensation .................................       0.1        0.1
     Change in assets and liabilities:
       Accounts receivable .......................................      (3.4)       0.9
       Inventory .................................................       0.1       (2.3)
       License fees receivable, prepaid expenses
        and other current assets .................................      (6.9)      (1.6)
       Other assets ..............................................      (0.3)       0.1
       Accounts payable and accrued expenses .....................       3.2        6.4
                                                                     -------    -------

              Net cash provided by operating activities ..........       2.9       16.2
                                                                     -------    -------

Cash flows from investing activities:
     Capital expenditures ........................................      (0.9)      (7.2)
                                                                     -------    -------

              Net cash used for investing activities .............      (0.9)      (7.2)
                                                                     -------    -------

Cash flows from financing activities:
     Payments of notes payable and capital lease obligations .....      (0.3)      (4.9)
     Stock options exercised .....................................       0.7        0.7
                                                                     -------    -------

              Net cash provided by (used for) financing activities       0.4       (4.2)
                                                                     -------    -------

Effect of exchange rate changes on cash ..........................       0.0        0.0
                                                                     -------    -------

Net increase in cash and cash equivalents ........................       2.4        4.8
Cash and cash equivalents at beginning of period .................      35.0       16.5
                                                                     -------    -------
Cash and cash equivalents at end of period .......................   $  37.4    $  21.3
                                                                     =======    =======


Non-cash financing activities:
     Sale of common stock financed with notes receivable .........   $  --      $   2.4

</TABLE>


   The accompanying notes are an integral part of the condensed consolidated
                             financial statements.


                                       5
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                  (unaudited)

NOTE 1 - Basis of Presentation

         The condensed consolidated financial statements at June 30, 2000 and
December 31, 1999 and for the three and six months ended June 30, 2000 and 1999
are unaudited, but include all adjustments which the Company considers necessary
for a fair presentation of the financial position at such dates and the
operating results and cash flows for those periods. These condensed consolidated
financial statements should be read in conjunction with the Company's audited
consolidated financial statements for the year ended December 31, 1999, which
were included as part of the Company's Form 10-K, as amended and filed with the
Securities and Exchange Commission. Results for interim periods are not
necessarily indicative of results for the entire year.


NOTE 2 - Inventories

         Inventories at June 30, 2000 and December 31, 1999 consisted of (in
millions):

                                                        June 30,    December 31,
                                                          2000         1999
                                                          ----         ----
         Raw Materials...............................    $ 1.0        $ 0.6
         Work-in-Process.............................      6.5          7.2
         Finished Goods..............................      1.0          0.7
                                                         -----        -----
                                                         $ 8.5        $ 8.5
                                                         =====        =====

NOTE 3 - Notes Receivable - Related Parties

         Notes receivable - related parties relates to the acquisition of common
stock of the Company at fair market value by certain officers and directors of
the Company pursuant to the Company's 1997 Restricted Stock Plan. The notes are
with full recourse and are payable with simple interest upon maturity. The
balance of the notes, including accrued interest, at June 30, 2000 and December
31, 1999 was $14.4 million and $14.0 million, respectively. The notes mature
over a range of dates from May 2007 to September 2009.

NOTE 4 - Convertible Debt

         In May 1998, the Company issued $15.0 million of subordinated
convertible debt to a third party. The debt has a five-year term and a coupon
rate of 6.9% with interest payable on a semi-annual basis. The debt contains a
conversion feature that allows the third party to convert the debt into common
shares at $20 per share. In addition, the Company can call the debt at par after
three years or after two years if certain conditions are satisfied. During the
fourth quarter of 1999, the debt holder converted one-third, or $5.0 million, of
the debt into 250,000 shares of common stock. Therefore at December 31, 1999 and
June 30, 2000, there was $10.0 million of convertible debt outstanding.


                                       6
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

       NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS - (continued)
                                  (unaudited)

NOTE 5 - Comprehensive Income

         Components of comprehensive income are net income and all other
non-owner changes in equity, such as the change in the cumulative translation
adjustment. The following table shows comprehensive income for the three and six
months ended June 30, 2000 and 1999 (in millions):

<TABLE>
<CAPTION>

                                                                           Three months ended             Six months ended
                                                                                June 30,                       June 30,
                                                                           2000              1999        2000              1999
                                                                        -------           -------     -------           -------
<S>                                                                    <C>               <C>         <C>               <C
Net income ...................................................          $   7.7           $   7.7     $   8.2           $  11.0
Change in cumulative translation adjustment ..................             (0.1)              0.3        (0.1)              0.5
                                                                        -------           -------     -------           -------
Comprehensive income .........................................          $   7.6           $   8.0     $   8.1           $  11.5
                                                                        =======           =======     =======           =======

</TABLE>

NOTE 6 - Net Income Per Common Share

         Basic net income per share is computed by dividing net income by the
weighted-average common shares outstanding for the period. Diluted net income
per share is reflective of all common share equivalents. The Company has
convertible debt which was convertible into 500,000 and 750,000 shares of common
stock at June 30, 2000 and 1999, respectively (see Note 4). This instrument has
been included in diluted earnings per share for the three and six months ended
June 30, 1999 and for the three months ended June 30, 2000 because its effect
would be dilutive. A reconciliation of weighted-average shares outstanding and
net income from basic to diluted for the three and six months ended June 30,
2000 and 1999 is as follows:

<TABLE>
<CAPTION>

                                                     Three months ended         Six months ended
                                                           June 30,                 June 30,
                                                      2000         1999         2000         1999
                                                      ----         ----         ----         ----
<S>                                               <C>          <C>          <C>          <C>
Weighted-average shares outstanding - Basic ....   23,388,175   22,931,602   23,340,298   22,862,843
Dilutive effect of convertible debt instrument .      500,000      750,000         --        750,000
Dilutive effect of stock options ...............    1,044,855    1,633,622    1,148,993    1,628,034
                                                   ----------   ----------   ----------   ----------
Weighted-average shares outstanding - Diluted ..   24,933,030   25,315,224   24,489,291   25,240,877
                                                   ==========   ==========   ==========   ==========


Net income as reported .........................   $      7.7   $      7.7   $      8.2   $     11.0
Addback of interest expense
related to convertible debt, net of tax ........          0.1          0.2         --            0.3
                                                   ----------   ----------   ----------   ----------
Net income for diluted earnings per share ......   $      7.8   $      7.9   $      8.2   $     11.3
                                                   ==========   ==========   ==========   ==========

</TABLE>


                                       7
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

       NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS - (continued)
                                  (unaudited)

NOTE 7 - Segment Data

         The following data is utilized by the Company's Executive Committee
(the chief operating decision makers) when analyzing the performance of the
Company. Given the importance of revenue growth and product launches, the
Company analyzes its revenues by product line and sales destination. The Company
does not allocate its assets to the various product lines, but does analyze its
assets on a geographic basis. The following table presents the segment data for
the three months ended June 30, 2000 and 1999 (in millions):

                                        Three months ended    Six months ended
                                             June 30,              June 30,
                                          2000       1999       2000      1999
                                        -------    -------    -------    -------
Net product sales:
    Synvisc(R):
         United States .............    $  15.8    $  13.3    $  27.6    $  25.9
         Rest of the world .........        3.6        3.8        7.4        7.0
    All other products .............        0.6        1.0        1.5        1.7
                                        -------    -------    -------    -------
    Total product sales ............    $  20.0    $  18.1    $  36.5    $  34.6
                                        =======    =======    =======    =======

                                                        June 30,    December 31,
                                                          2000          1999
                                                        -------       -------
Identifiable assets (in millions):
    United States ................................      $ 100.3       $  89.8
    Rest of the world ............................         10.0           9.2
                                                        -------       -------
    Total assets .................................      $ 110.3       $  99.0
                                                        =======       =======


NOTE 8 - Contingencies

         In October 1996, Michael Jarcho filed suit against Biomatrix in the
United States District Court for the Southern District of California seeking to
recover damages and declaratory judgment for our alleged breach of Jarcho's
consulting agreement with Biomatrix, dated December 2, 1988. The agreement
provides that Biomatrix is to pay royalties to Jarcho for products that result
from his consultancy. Jarcho contends that Hylaform(R) resulted from his
consultancy and seeks a royalty on the Company's past and future net sales of
Hylaform as well as punitive damages and recovery of attorney fees. The royalty
Jarcho alleges he is entitled to would have totaled $0.4 million through June
30, 2000. The Company disagrees with Jarcho's claims and does not believe that
Jarcho is owed any royalties on Hylaform sales. On January 10, 1997, the court
dismissed Jarcho's case on the grounds that the agreement requires such disputes
to be brought exclusively in New Jersey state court. Jarcho moved for a partial
reconsideration of the decision, which the Company opposed, and his motion was
denied. On June 16, 1997, Jarcho filed suit in New Jersey state court. A
tentative trial date has been set for September 2000. The Company has been
defending this matter vigorously. In accordance with the Company's policy on
contingencies, a provision has been made in the accompanying consolidated
financial statements for estimated legal fees expected to be incurred in
defending the matter vigorously. The Company is presently unable to predict the
ultimate outcome of this matter or whether it would have a material impact on
the results of operations, financial position or cash flows of Biomatrix. The
Company has not made any provisions for any liability that might result from the
claims made by Jarcho.


                                       8
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                  (CONTINUED)


NOTE 9 - Impact of the Adoption of Recently Issued Accounting Standards

         In December 1999, the staff of the Securities and Exchange Commission
(SEC) issued Staff Accounting Bulletin No. 101, Revenue Recognition, which was
most recently amended by SAB 101B on June 26, 2000 to delay the implementation
date until no later than their fourth fiscal quarter of the fiscal year
beginning after December 15, 1999. To the extent the guidance in SAB 101 differs
from the generally accepted accounting principles previously utilized by an SEC
registrant, SAB 101 indicates that the SEC staff will not object to reporting
the cumulative effect of a change in accounting principle.

         In consideration of SAB 101 and the guidance contained therein, we are
re-examining all elements and provisions of our contracts, specifically
non-refundable license fees and milestones, to determine the impact of SAB 101
on our policy of recording revenue. Based on our most recent analysis and our
understanding of the requirements, we have revised our previous estimates and
currently anticipate that the implementation of SAB 101 will result in a
cumulative effect adjustment for a change in accounting principle. The total
cumulative effect of the non-cash, after-tax charge is currently estimated to be
approximately $2.2 million. Such amount would be recorded as deferred revenue
and recognized as revenue in future periods. We will continue to assess the
impact of SAB 101 as additional guidance and interpretations evolve over the
remainder of the year and we intend to implement changes resulting from SAB 101
no later then the fourth quarter of 2000.

NOTE 10 - Proposed Merger

         On March 6, 2000, Genzyme Corporation ("Genzyme"), a Massachusetts
corporation, Seagull Merger Corporation, a Massachusetts corporation and
wholly-owned subsidiary of Genzyme ("Merger Sub"), and Biomatrix entered into an
Agreement and Plan of Merger (the "Merger Agreement") pursuant to which the
parties will effect a business combination through a merger of Biomatrix with
and into Merger Sub (the "Merger"). In connection with the Merger, Genzyme will
form a new division, the Genzyme Biosurgery division, and will create a new
series of common stock designated as "GZBX division Common Stock," $0.01 par
value per share ("GZBX Stock"), which will be issued to the holders of Biomatrix
common stock, $.0001 par value per share ("Biomatrix Common Stock"), in the
Merger. The currently proposed terms of the GZBX Stock are set forth as an
exhibit to the Merger Agreement. In connection with the Merger, Genzyme's Tissue
Repair Division and Surgical Products Division will become part of the Genzyme
Biosurgery division and the Genzyme Tissue Repair Common Stock ("GTR Stock")
series and Genzyme Surgical Products Common Stock ("GSP Stock") series will be
exchanged for GZBX Stock (the "Genzyme Reorganization"). The transaction, which
will be accounted for using the purchase method of accounting, is expected to
close in the third quarter of 2000.


                                       9
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                  (CONTINUED)

NOTE 10 - Proposed Merger (continued)

         Under the terms of the Merger Agreement, each outstanding share of
Biomatrix Common Stock will be converted, at the option of the holder, into
either (i) $37.00 in cash, (ii) one share of GZBX Stock or (iii) a fixed
combination of cash and GZBX Stock (the "Merger Consideration"). Under the
Merger Agreement, notwithstanding elections made by Biomatrix shareholders,
28.38% of the shares of Biomatrix Common Stock outstanding at the effective time
of the Merger will be exchanged for cash and the remaining 71.62% of the shares
of Biomatrix Common Stock outstanding at the time of the Merger will be
converted into shares of GZBX Stock at a conversion rate of one share of GZBX
Stock for each share of Biomatrix Common Stock. Based on the cash election price
and the number of shares of Biomatrix Common Stock outstanding, Biomatrix
expects that the cash portion of the transaction will be approximately $245
million. However, the number of shares of Biomatrix Common Stock to be converted
to cash in the Merger is subject to downward adjustment if there are Biomatrix
shareholders exercising their dissenter's rights or if the value of the GZBX
Stock to be issued in the Merger on the effective date of the Merger is less
than 45% of the total Merger Consideration in order to preserve the status of
the Merger as a tax-free reorganization.

         Under the terms of the Merger Agreement, each outstanding share of GSP
Stock will convert into 0.6060 shares of GZBX Stock and each share of GTR Stock
will convert into 0.3352 shares of GZBX Stock. Based on the number of common
shares outstanding for each entity at the time when the registration statement
on Form S-4 was filed by Genzyme Corporation, the Genzyme Biosurgery division is
expected to have approximately 35.4 million shares outstanding.

         Consummation of the Merger is subject to the adoption of the Agreement
and Plan of Merger by the Biomatrix stockholders, the approval of the issuance
of GZBX Stock in the Merger and the necessary amendments of Genzyme's charter by
the Genzyme stockholders, including the approval of the exchange of GSP Stock
for GZBX Stock by GSP stockholders and the exchange of GTR Stock for GZBX Stock
by GTR stockholders, the receipt of regulatory approvals and certain other
customary closing conditions.

         Certain officers of Biomatrix holding an aggregate of approximately 36%
of the outstanding shares of Biomatrix Common Stock have agreed to vote their
shares of Biomatrix Common Stock in favor of the Merger until the earlier to
occur of the completion of the Merger or 5 days after the termination of the
Merger Agreement. In addition, as a condition to Genzyme's entering into the
Merger Agreement, Biomatrix has granted Genzyme an option to purchase 4.6
million shares of Biomatrix Common Stock at a price of $30 per share. The option
may only be exercised by Genzyme upon the termination of the Merger Agreement
resulting from our shareholders' voting against the merger or our entering into
an alternative transaction that is recommended by our Board.

         Under the terms of the Merger agreement and prior to the closing of the
Merger, Biomatrix expects to modify the stock option awards of one executive and
two non-employee directors to immediately accelerate any unvested options upon
the closing of the Merger. In addition, the Company expects to modify the option
plan to provide that if any employee's employment is terminated within one year
following the Merger other than (i) by the Company for cause (as defined in the
Biomatrix Separation Pay Plan), (ii) by reason of death or (iii) by the employee
without Good Reason (as defined in the Biomatrix Separation Pay Plan), all
unvested options will immediately vest and become exercisable as of the date of
termination.


                                       10
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

              NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
                                  (CONTINUED)

NOTE 10 - Proposed Merger (continued)

The Company expects that the aforementioned modifications will be made upon
stockholder and board approvals and concurrent with the closing of the Merger
which is anticipated to occur late in the third quarter of fiscal 2000. At the
time that the options and option plan are modified, Biomatrix will measure any
compensation expense based on the stock price at the date that the modifications
are made. The Company will record compensation expense in its financial
statements with respect to the immediate acceleration of the options of the
executive and non-employee directors at the modification date. The Company will
record additional compensation expense for any unvested option that will
accelerate at the date on which an employee is terminated. The amount of the
compensation expense is based on the stock price at the date of modification and
based on the unvested shares subject to acceleration.


Note 11 - Subsequent Event

         In July 2000, Arthur Fields and Hardy Fields, on behalf of themselves
and all others similarly situated, filed a class action suit in United States
District Court, District of New Jersey, against Biomatrix and two of its
officers. The suit alleges that the two Officers and the Company violated the
Securities Exchange Act of 1934 and Rule 10b-5 thereunder. The Company has
insurance coverage to assist in the defense of such claims. The Company believes
the claims under the suit are without merit and plans to defend the matter
vigorously. The Company is presently unable to predict the ultimate outcome of
this matter or whether it would have a material impact on the results of
operations, financial position or cash flows of Biomatrix. The Company has not
made any provisions for any liability that might result from this class action
suit.


                                       11
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

                      MANAGEMENT'S DISCUSSION AND ANALYSIS
                OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Overview

         Biomatrix, Inc., together with its subsidiaries in Canada, Europe and
Asia, develops, manufactures, markets and sells a series of proprietary
viscoelastic products called hylans that are used in therapeutic medical
applications and skin care. Hylans are biological polymers that are chemically
modified forms of the naturally occurring substance called hyaluronan, also
known as hyaluronic acid or sodium hyaluronate. Hylans are the second generation
of viscoelastics used in medicine. Their physical properties, such as
elasticity, viscosity and pseudoplasticity, have properties that are
significantly improved over those of hyaluronan, from which the first generation
viscoelastics were made. The discovery of hylans has allowed Biomatrix to
develop a range of patented products in the forms of fluids, gels and solids,
all having superior viscoelastic properties.

         The Company's business is subject to significant risks. Certain
statements contained in this Form 10-Q are forward-looking within the meaning of
Section 27A of the Securities Act of 1933 and involve risks and uncertainties
which could cause the results of operations and the financial position of the
Company to be materially adversely affected, including, but not limited to,
governmental regulation, reimbursement for products, dependence on distribution
relationships, patents, competition, manufacturing, rapid growth, dependence
upon key personnel, fluctuation in operating results, product liability, the
outcome of currently pending litigation, stock price volatility, and other risks
detailed in the Company's reports filed under the Securities and Exchange Act,
including the Company's Form 10-K, as amended, for the year ended December 31,
1999 and the proxy statement filed as part of the Genzyme Corporation
registration statement on Form S-4, as amended on July 3, 2000. As a portion of
the Company's revenues may be based on payments from corporate license and
distribution agreements, the Company's total revenues and net income will
fluctuate from quarter to quarter. Some of these fluctuations may be significant
and, as a result, quarter to quarter comparisons may not be meaningful.

Results of Operations for the three months ended June 30, 2000 and 1999

         Revenues. Total revenues for the three months ended June 30, 2000 were
$27.2 million, representing an increase of $2.0 million or 8% over the same
period of the prior year. Net product sales for the three months ended June 30,
2000 were $20.0 million, representing an increase of $1.9 million or 10% over
the same period of 1999. This increase is primarily due to greater sales of
Synvisc(R) to the Company's marketing partner in the United States which result
from a greater than 100% increase in U.S. end-user sales by our marketing
partner over the same period of the prior year. During the second quarter of
1999, Synvsic sales to our U.S. marketing partner included an inventory build
sufficient to support the advertising campaign that was initiated in the second
half of 1999. Product sales for the three months ended June 30, 2000 of $20.0
million was comprised of $19.2 million from supply price revenues and $0.8
million from formula price adjustment revenues. Product sales for the three
months ended June 30, 1999 of $18.1 million was comprised of $17.7 million from
supply price revenues and $0.4 million from formula price adjustment revenues.
The number of units shipped and the average selling price per unit during the
second quarter of 2000 was relatively consistent with the second quarter of
1999. Income from licenses, royalties and research contracts for the three
months ended June 30, 2000 and 1999 each included milestone payments of $7.0
million related to achieving certain sales-related milestones. The milestone
recognized in the second quarter of 2000 related to our marketing partner in the
United States achieving $150 million of net sales of Synvsic on a rolling twelve
month basis, while the milestone recognized in the second quarter of 1999
related to the same marketing partner achieving $100 million of net sales of
Synvisc in the United States. Upon adoption of Staff Accounting Bulletin No.
101, "Revenue Recognition," the Company's accounting policy for recognizing
revenue related to up front and milestone payments will be to recognize revenue
when all performance and economic commitments have been completed.


                                       12
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

                      MANAGEMENT'S DISCUSSION AND ANALYSIS
          OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

Results of Operations for the three months ended June 30, 2000 and 1999
(continued)

           Costs and Expenses. Total costs and expenses were $14.9 million for
the three months ended June 30, 2000, representing an increase of $3.1 million
or 26% over the same period of the prior year. Cost of goods sold for the second
quarter of 2000 and 1999 was $6.0 million and $5.2 million, respectively,
resulting in gross margins of 70% and 71%, respectively. This decrease in gross
margin percentage is a result of a higher proportion of unit shipments from our
US manufacturing facility which has unused capacity. Research and development
expenses were $2.7 million for the second quarter of 2000, representing an
increase of $0.7 million or 35% over the second quarter of 1999. The increase in
research and development expenses is primarily related to greater expenses
incurred for clinical trials of existing and pipeline products. Selling, general
and administrative expenses for the second quarter of 2000 were $6.2 million,
representing an increase of $1.6 million or 35%, over the second quarter of
1999. This increase is a result of higher market development costs related to
Synvisc, the increased scope of international operations and higher legal fees.
Selling, general and administrative expenses for the second quarter of 2000
included $0.8 million of merger related expenses, primarily legal costs.


                                       13
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

                      MANAGEMENT'S DISCUSSION AND ANALYSIS
          OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

Results of Operations for the six months ended June 30, 2000 and 1999

         Revenues. Total revenues for the six months ended June 30, 2000 were
$43.9 million, representing an increase of $2.1 million or 5% over the same
period of the prior year. Net product sales for the six months ended June 30,
2000 were $36.5 million, representing an increase of $1.9 million or 6% over the
same period of 1999. These increases were due to greater sales of Synvisc to the
Company's marketing partner in the United States which reflects the 71% increase
in end-user sales by this partner as compared to the comparable period of 1999.
During the first six months of 1999, Synvisc sales to our U.S. marketing partner
included an inventory build sufficient to support the advertising campaign that
was initiated in the second half of 1999. Product sales for the six months ended
June 30, 2000 of $36.5 million was comprised of $34.7 million from supply price
revenues and $1.8 million from formula price adjustment revenues. Product sales
for the six months ended June 30, 1999 of $34.6 million was comprised of $32.8
million from supply price revenues and $1.8 million from formula price
adjustment revenues. The number of units shipped and the average selling price
per unit during the first six months of 2000 was relatively consistent with the
first six months of 1999. Income from licenses, royalties and research contracts
for the six months ended June 30, 2000 and 1999 was $7.4 million and $7.2
million, respectively. The milestone recognized in 2000 related to our marketing
partner in the United States achieving $150 million of net sales on a rolling
twelve-month basis, while the milestone recognized in 1999 related to the same
marketing partner achieving $100 million of net sales in the United States. Upon
adoption of Staff Accounting Bulletin No. 101, "Revenue Recognition," the
Company's accounting policy for recognizing revenue related to up front and
milestone payments will be to recognize revenue when all performance and
economic commitments have been completed.

         Costs and Expenses. Total costs and expenses were $31.0 million for the
six months ended June 30, 2000, representing an increase of $8.2 million or 36%
over the same period of the prior year. Cost of goods sold for the six months
ended June 30, 2000 and 1999 was $11.0 million and $10.1 million, respectively,
resulting in gross margins of 70% and 71%, respectively. This decrease in gross
margin percentage is a result of a higher proportion of unit shipments from our
US manufacturing facility which has unused capacity. Research and development
expenses were $5.3 million for the first six months of 2000, representing an
increase of $1.1 million or 26% over the comparable period in 1999. The increase
in research and development expenses is primarily related to increased clinical
expenses for existing and pipeline products. Selling, general and administrative
expenses for the first six months of 2000 were $14.7 million, representing an
increase of $6.2 million or 73% over the first six months of 1999. This increase
is due to $3.0 million of marketing expenses related to the Company's U.S.
advertising campaign for Synvisc, the increased scope of the Company's global
activities and $0.8 million of merger related expenses, primarily legal costs.

Income Taxes

         The Company recorded federal and state tax provisions totaling $5.5
million and $7.7 million for the six months ended June 30, 2000 and 1999,
respectively. The consolidated effective tax rate for the first six months of
2000 was 40% as compared to 41% for the first six months of 1999.

         As of June 30, 2000 the Company had $0.5 million of net deferred U.S.
tax assets included in other long-term assets and $0.7 million of net deferred
tax assets included in other short term assets on its balance sheet, as it is
more likely than not that the Company will realize the benefit of these assets.
The Company has provided a full valuation allowance on certain foreign-related
deferred tax assets due to their uncertainty of realization.


                                       14
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

                      MANAGEMENT'S DISCUSSION AND ANALYSIS
          OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

Liquidity and Capital Resources

         The Company had cash and cash equivalents of $37.4 million at June 30,
2000. Overall, the Company's cash position increased by $2.4 million during the
six months ended June 30, 2000.

         The Company's operations and capital growth over the past several years
have been financed by its sales of products, up-front non-refundable license fee
payments from corporate partners, the utilization of the Company's cash and
investments and the private placement of debt and equity securities. Since
January 1, 1997, and through June 30, 2000, the Company has received $36.4
million from non-refundable license fee payments and $19.8 million from the
private placement of equity and debt securities.

         For the six months ended June 30, 2000 the Company had positive cash
flows from operations of $2.9 million resulting principally from positive
operating results. During the six months ended June 30, 2000, the Company
invested $0.9 million in property, plant, and equipment for research and testing
equipment as well as for the continued completion of the exterior of the
Company's U.S. manufacturing plant. During July 2000, the Company received $7.0
million related to the license fee receivable that was outstanding on June 30,
2000, and as a result the Company had cash and cash equivalents of $48.0 million
as of July 31, 2000.

Proposed Merger

         On March 6, 2000, Genzyme Corporation ("Genzyme"), a Massachusetts
corporation, Seagull Merger Corporation, a Massachusetts corporation and
wholly-owned subsidiary of Genzyme ("Merger Sub"), and Biomatrix entered into an
Agreement and Plan of Merger (the "Merger Agreement") pursuant to which the
parties will effect a business combination through a merger of Biomatrix with
and into Merger Sub (the "Merger"). In connection with the Merger, Genzyme will
form a new division, the Genzyme Biosurgery division, and will create a new
series of common stock designated as "GZBX division Common Stock," $0.01 par
value per share ("GZBX Stock"), which will be issued to the holders of Biomatrix
common stock, $.0001 par value per share ("Biomatrix Common Stock"), in the
Merger. The currently proposed terms of the GZBX Stock are set forth as an
exhibit to the Merger Agreement. In connection with the Merger, Genzyme's Tissue
Repair Division and Surgical Products Division will become part of the Genzyme
Biosurgery division and the Genzyme Tissue Repair Common Stock ("GTR Stock")
series and Genzyme Surgical Products Common Stock ("GSP Stock") series will be
exchanged for GZBX Stock (the "Genzyme Reorganization"). The transaction, which
will be accounted for using the purchase method of accounting, is expected to
close in the third quarter of 2000.

         Under the terms of the Merger Agreement, each outstanding share of
Biomatrix Common Stock will be converted, at the option of the holder, into
either (i) $37.00 in cash, (ii) one share of GZBX Stock or (iii) a fixed
combination of cash and GZBX Stock (the "Merger Consideration"). Under the
Merger Agreement, notwithstanding elections made by Biomatrix shareholders,
28.38% of the shares of Biomatrix Common Stock outstanding at the effective time
of the Merger will be exchanged for cash and the remaining 71.62% of the shares
of Biomatrix Common Stock outstanding at the time of the Merger will be
converted into shares of GZBX Stock at a conversion rate of one share of GZBX
Stock for each share of Biomatrix Common Stock. Based on the cash election price
and the number of shares of Biomatrix Common Stock outstanding, Biomatrix
expects that the cash portion of the transaction will be approximately $245
million. However, the number of shares of Biomatrix Common Stock to be converted
to cash in the Merger is subject to downward adjustment if there are Biomatrix
shareholders exercising their dissenter's rights or the value of the GZBX Stock
to be issued in the Merger on the effective date of the Merger is less than 45%
of the total Merger Consideration in order to preserve the status of the Merger
as a tax-free reorganization.


                                       15
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

                      MANAGEMENT'S DISCUSSION AND ANALYSIS
          OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

Proposed Merger (continued)

         Under the terms of the Merger Agreement, each outstanding share of GSP
Stock will convert into 0.6060 shares of GZBX Stock and each share of GTR Stock
will convert into 0.3352 shares of GZBX Stock. Based on the number of common
shares outstanding for each entity at the time when the registration statement
on Form S-4 was filed by Genzyme Corporation, the Genzyme Biosurgery division is
expected to have approximately 35.4 million shares outstanding.

         Consummation of the Merger is subject to the adoption of the Agreement
and Plan of Merger by the Biomatrix stockholders, the approval of the issuance
of GZBX Stock in the Merger and the necessary amendments of Genzyme's charter by
the Genzyme stockholders, including the approval of the exchange of GSP Stock
for GZBX Stock by GSP stockholders and the exchange of GTR Stock for GZBX Stock
by GTR stockholders, the receipt of regulatory approvals and certain other
customary closing conditions.

         Certain officers of Biomatrix holding an aggregate of approximately 36%
of the outstanding shares of Biomatrix Common Stock have agreed to vote their
shares of Biomatrix Common Stock in favor of the Merger until the earlier to
occur of the completion of the Merger or 5 days after the termination of the
Merger Agreement. In addition, as a condition to Genzyme's entering into the
Merger Agreement, Biomatrix has granted Genzyme an option to purchase 4.6
million shares of Biomatrix Common Stock at a price of $30 per share. The option
may only be exercised by Genzyme upon the termination of the Merger Agreement
resulting from our shareholders' voting against the merger or our entering into
an alternative transaction that is recommended by our Board.

         Under the terms of the Merger agreement and prior to the closing of the
Merger, Biomatrix expects to modify the stock option awards of one executive and
two non-employee directors to immediately accelerate any unvested options upon
the closing of the Merger. In addition, the Company expects to modify the option
plan to provide that if any employee's employment is terminated within one year
following the Merger other than (i) by the Company for cause (as defined in the
Biomatrix Separation Pay Plan), (ii) by reason of death or (iii) by the employee
without Good Reason (as defined in the Biomatrix Separation Pay Plan), all
unvested options will immediately vest and become exercisable as of the date of
termination.

         The Company expects that the aforementioned modifications will be made
upon stockholder and board approvals and concurrent with the closing of the
Merger which is anticipated to occur late in the third quarter of fiscal 2000.
At the time that the options and option plan are modified, Biomatrix will
measure any compensation expense based on the stock price at the date that the
modifications are made. Based on the market value of the Company's stock price
on August 1, 2000, the Company estimates the impact of the immediate
acceleration of the unvested options of the executive and non-employee directors
to be approximately $0.5 million which will be recorded in the Company's
financial statements at the modification date and up to $5.5 million related to
the other options. The Company would record additional compensation expense for
any unvested options that will accelerate at the date on which an employee is
terminated. These amounts are subject to change based on the stock price at the
date of modification and based on the unvested shares subject to acceleration.


                                       16
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES

                      MANAGEMENT'S DISCUSSION AND ANALYSIS
          OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS (CONTINUED)

Impact of the Adoption of Recently Issued Accounting Standards

         In December 1999, the staff of the Securities and Exchange Commission
(SEC) issued Staff Accounting Bulletin No. 101, Revenue Recognition, which was
most recently amended by SAB 101B on June 26, 2000 to delay the implementation
date until no later than their fourth fiscal quarter of the fiscal year
beginning after December 15, 1999. To the extent the guidance in SAB 101 differs
from the generally accepted accounting principles previously utilized by an SEC
registrant, SAB 101 indicates that the SEC staff will not object to reporting
the cumulative effect of a change in accounting principle.

         In consideration of SAB 101 and the guidance contained therein, we are
re-examining all elements and provisions of our contracts, specifically
non-refundable license fees and milestones, to determine the impact of SAB 101
on our policy of recording revenue. Based on our most recent analysis and our
understanding of the requirements, we have revised our previous estimates and
currently anticipate that the implementation of SAB 101 will result in a
cumulative effect adjustment for a change in accounting principle. The total
cumulative effect of the non-cash, after-tax charge is currently estimated to be
approximately $2.2 million. Such amount would be recorded as deferred revenue
and recognized as revenue in future periods. We will continue to assess the
impact of SAB 101 as additional guidance and interpretations evolve over the
remainder of the year and we intend to implement changes resulting from SAB 101
no later then the fourth quarter of 2000.


Subsequent Event

         In July 2000, Arthur Fields and Hardy Fields, on behalf of themselves
and all others similarly situated, filed a class action suit in United States
Disctrict Court, District of New Jersey, against Biomatrix and two of its
officers. The suit alleges that the two officers and the Company violated the
Securities Exchange Act of 1934 and Rule 10b-5 thereunder. The Company has
insurance coverage which to assist in the defense of such claims. The Company
believes the claims under the suit are without merit and plans to defend the
matter vigorously. The Company is presently unable to predict the ultimate
outcome of this matter or whether it would have a material impact on the results
of operations, financial position or cash flows of Biomatrix. The Company has
not made any provisions for any liability that might result from this class
action suit.


                                       17
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES


Item 1.   LEGAL PROCEEDINGS

In July 2000, Arthur Fields and Hardy Fields, on behalf of themselves and all
others similarly situated, filed a class action suit in United States District
Court, District of New Jersey, against Biomatrix and two of its officers. The
suit alleges that the two officers and the Company violated the Securities
Exchange Act of 1934 and Rule 10b-5 thereunder. The Company has insurance
coverage to assist in the defense of such claims. The Company believes the
claims under the suit are without merit and plans to defend the matter
vigorously. The Company is presently unable to predict the ultimate outcome of
this matter or whether it would have a material impact on the results of
operations, financial position or cash flows of Biomatrix. The Company has not
made any provisions for any liability that might result from this class action
suit.

Item 6.   EXHIBITS AND REPORTS ON FORM 8-K

A.  Exhibits

       27.1     Financial Data Schedule

B.   Reports on Form 8-K

       None


                                       18
<PAGE>

                        BIOMATRIX, INC. AND SUBSIDIARIES




                                   SIGNATURES
                                   ----------


Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has duly caused this report to be signed on its behalf by the
undersigned thereunto duly authorized.



DATE:   August 14, 2000                 BIOMATRIX, INC.



                                        By: /s/ Endre A. Balazs
                                            ------------------------------------
                                            Endre A. Balazs
                                            Chief Executive Officer and
                                            Chief Scientific Officer




                                        By: /s/Maxine Seifert
                                            ------------------------------------
                                            Maxine Seifert
                                            Vice President, Finance and Chief
                                            Financial Officer


                                       19