11. ORIGINAL REASON FOR          CHAR      1    40   40  THIS FIELD INDICATES THE REASON FOR THE
       ENTITLEMENT                                          BENEFICIARY'S ORIGINAL ENTITLEMENT TO
                                                            MEDICARE BENEFITS.
                                                            CODES:
                                                            0 = OLD AGE AND SURVIVORS INSURANCE (OASI)
                                                            1 = DISABILITY INSURANCE BENEFITS (DIB)
                                                            2 = ESRD
                                                            3 = BOTH DIB AND ESRD
                                                            SOURCE:
                                                            SSA AND RRB BENEFICIARY RECORD SYSTEMS