5. COUNTY CODE CHAR 3 16 18 THIS CODE SPECIFIES THE SSA CODE FOR THE COUNTY OF RESIDENCE OF THE BENEFICIARY. EACH STATE HAS A SERIES OF CODES BEGINNING WITH '000' FOR EACH COUNTY WITHIN THAT STATE. CERTAIN CITIES WITHIN THAT STATE HAVE THEIR OWN CODE. COUNTY CODES MUST BE COMBINED WITH STATE CODES IN ORDER TO LOCATE THE SPECIFIC COUNTY. THE CODING SYSTEM IS THE SSA SYSTEM, NOT THE FEDERAL INFORMATION PROCESSING SYSTEM (FIPS). STANDARD ALIAS: BENE_RSDNC_SSA_STD_CNTY_CD EDIT-RULES: NUMERIC SOURCE: 'GEOGRAPHIC CODE MANUAL FOR STATE AND COUNTY OF RESIDENCE' PRODUCED BY THE SSA. LIMITATIONS: SOME CODES MAY BE INVALID, UNKNOWN, OR '999'. (DIFFERENT FROM FIPS)