<TABLE> <S> <C>

<PAGE>
<ARTICLE> 5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM AMISYS 
MANAGED CARE SYSTEMS, INC. AND IS QUALIFIED IN ITS ENTIREY BY REFERENCE TO SUCH 
FINANCIAL STATEMENTS. IDENTIFY THE FINANCIAL STATEMENTS(S) TO BE REFERENCED IN 
THE LEGEND. FORM 10-Q (FILE NO. 0-27634) WHICH INCLUDES BALANCE SHEETS AND 
STATEMENTS OF OPERATIONS FOR THE PERIODS PRESENTED.

<MULTIPLIER> 1,000
       
<S>                             <C>                     <C>
<PERIOD-TYPE>                   3-MOS                   9-MOS
<FISCAL-YEAR-END>                          DEC-31-1996             DEC-31-1996
<PERIOD-START>                             JUL-01-1996             JAN-01-1996
<PERIOD-END>                               SEP-30-1996             SEP-30-1996
<CASH>                                               0                   2,639
<SECURITIES>                                         0                  24,343
<RECEIVABLES>                                        0                  11,253
<ALLOWANCES>                                         0                     482
<INVENTORY>                                          0                       0
<CURRENT-ASSETS>                                     0                  38,449
<PP&E>                                               0                   2,632
<DEPRECIATION>                                       0                   1,021
<TOTAL-ASSETS>                                       0                  40,215
<CURRENT-LIABILITIES>                                0                   8,622
<BONDS>                                              0                       0
<PREFERRED-MANDATORY>                                0                       0
<PREFERRED>                                          0                       0
<COMMON>                                             0                       8
<OTHER-SE>                                           0                  31,585
<TOTAL-LIABILITY-AND-EQUITY>                         0                  40,215
<SALES>                                         10,967                  32,168
<TOTAL-REVENUES>                                10,967                  32,168
<CGS>                                            5,085                  16,405
<TOTAL-COSTS>                                    9,418                  28,473
<OTHER-EXPENSES>                                     0                       0
<LOSS-PROVISION>                                     0                       0
<INTEREST-EXPENSE>                                   9                      25
<INCOME-PRETAX>                                  1,873                   4,652
<INCOME-TAX>                                       656                   1,628
<INCOME-CONTINUING>                              1,217                   3,024
<DISCONTINUED>                                       0                       0
<EXTRAORDINARY>                                      0                       0
<CHANGES>                                            0                       0
<NET-INCOME>                                     1,217                   3,024
<EPS-PRIMARY>                                      .15                     .37
<EPS-DILUTED>                                        0                       0
        

</TABLE>