Prefixes from PAA to PZZ
| PAA | CAPITAL BLUE CROSS – HARRISBURG PA |
| PAH | INDEPENDENCE BLUE CROSS |
| PAI | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PAK | CAREFIRST BCBS – MARYLAND |
| PAL | BLUE SHIELD OF CALIFORNIA |
| PAM | BCBS OF MICHIGAN |
| PAN | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PAO | CAREFIRST BCBS – WASHINGTON DC |
| PAP | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PAQ | ANTHEM BCBS – OHIO |
| PAR | EXCELLUS BCBS – ROCHESTER – NY |
| PAS | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PAU | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PAV | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PAY | EXCELLUS BCBS – ROCHESTER – NY |
| PAZ | PREMERA BLUE CROSS – SEATTLE WA |
| PBA | BLUE SHIELD OF CALIFORNIA |
| PBB | BCBS – SOUTH CAROLINA |
| PBG | EMPIRE BCBS – NEW YORK |
| PBJ | CAREFIRST BCBS – MARYLAND |
| PBL | BLUE SHIELD OF CALIFORNIA |
| PBM | HIGHMARK INC |
| PBN | CAPITAL BLUE CROSS – HARRISBURG PA |
| PBU | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PBV | PREMERA BLUE CROSS – SEATTLE WA |
| PBY | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PCB | ANTHEM BLUE CROSS – CALIFORNIA |
| PCD | BLUE CROSS AND BLUE SHIELD OF TEXAS |
| PCF | BCBS OF MICHIGAN |
| PCF | CAREFIRST BCBS – MARYLAND |
| PCG | BCBS – KANSAS CITY – MO |
| PCI | ANTHEM BLUE CROSS – CALIFORNIA |
| PCJ | EMPIRE BCBS – NEW YORK |
| PCK | PREMERA BLUE CROSS – SEATTLE WA |
| PCL | ANTHEM BLUE CROSS – CALIFORNIA |
| PCM | PREMERA BLUE CROSS – SEATTLE WA |
| PCS | CAREFIRST BCBS – MARYLAND |
| PCT | ANTHEM BCBS – OHIO |
| PCV | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PCW | EMPIRE BCBS – NEW YORK |
| PCX | INDEPENDENCE BLUE CROSS |
| PDC | CAREFIRST BCBS – MARYLAND |
| PDE | ANTHEM BCBS – VIRGINIA |
| ANTHEM BCBS – OHIO | |
| PDG | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PDI | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PDJ | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PDK | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PDM | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PDO | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PDP | BCBS – MINNESOTA |
| PDR | ANTHEM BCBS – VIRGINIA |
| PDT | BCBS – MINNESOTA |
| PDU | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PDW | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PDX | BCBS OF MICHIGAN |
| PDY | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PDZ | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PEA | ANTHEM BCBS – COLORADO |
| PEB | CAPITAL BLUE CROSS – HARRISBURG PA |
| PEE | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PEF | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PEG | BLUE CROSS AND BLUE SHIELD OF TEXAS |
| PEI | ANTHEM BLUE CROSS – CALIFORNIA |
| PEJ | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PEK | EMPIRE BCBS – NEW YORK |
| PEL | BLUE SHIELD OF CALIFORNIA |
| PEP | BCBS OF MICHIGAN |
| PEQ | BCBS – NORTH CAROLINA |
| PER | BLUE SHIELD OF CALIFORNIA |
| PEV | CAREFIRST BCBS – MARYLAND |
| PEW | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PEY | EMPIRE BCBS – NEW YORK |
| PFC | BLUE SHIELD OF CALIFORNIA |
| PFD | CAPITAL BLUE CROSS – HARRISBURG PA |
| PFE | CAPITAL BLUE CROSS – HARRISBURG PA |
| PFF | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PFG | BCBS – KANSAS CITY – MO |
| PFH | CAPITAL BLUE CROSS – HARRISBURG PA |
| PFK | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PFL | ANTHEM BCBS – OHIO |
| PFN | ANTHEM BCBS – OHIO |
| PFP | CAPITAL BLUE CROSS – HARRISBURG PA |
| PFQ | BLUE SHIELD OF CALIFORNIA |
| PFU | BCBS – SOUTH CAROLINA |
| PFY | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PGA | BCBS – SOUTH CAROLINA |
| PGH | BCBS OF MICHIGAN |
| PGI | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PGJ | ANTHEM BCBS – OHIO |
| PGK | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PGM | HIGHMARK INC |
| PGN | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PGQ | BCBS – SOUTH CAROLINA |
| PGS | CAREFIRST BCBS – MARYLAND |
| PGT | BCBS OF MICHIGAN |
| PGU | BLUE SHIELD OF CALIFORNIA |
| PGV | BCBS – MINNESOTA |
| PGW | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PGX | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PGY | ANTHEM BLUE CROSS – CALIFORNIA |
| PGZ | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PHB | WELLMARK OF IOWA/SOUTH DAKOTA |
| PHI | BCBS – LOUISIANA |
| PHK | ANTHEM BCBS – OHIO |
| PHL | EMPIRE BCBS – NEW YORK |
| PHN | BLUE CROSS AND BLUE SHIELD OF TEXAS |
| PHR | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PHS | CAREFIRST BCBS – MARYLAND |
| PHT | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PHU | CAPITAL BLUE CROSS – HARRISBURG PA |
| PHV | CAPITAL BLUE CROSS – HARRISBURG PA |
| PHW | ANTHEM BCBS – OHIO |
| PHW | CAREFIRST BCBS – MARYLAND |
| PHX | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PIA | CAREFIRST BCBS – WASHINGTON DC |
| PIB | COMPREHENSIVE CARE SERVICES INC-MN |
| PIC | EMPIRE BCBS – NEW YORK |
| PIE | BLUE CROSS AND BLUE SHIELD-FLORIDA |
| PIG | BCBS – SOUTH CAROLINA |
| PIH | CAREFIRST BCBS – MARYLAND |
| PIO | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PIQ | BLUE ADVANTAGE ADMINS OF ARKANSAS |
| PIR | BCBS – SOUTH CAROLINA |
| PIV | ANTHEM BLUE CROSS – CALIFORNIA |
| PIW | HIGHMARK INC |
| PIX | WELLMARK OF IOWA/SOUTH DAKOTA |
| PIZ | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PJA | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PJB | HEALTHCARE ADMINISTRATORS – SEATTLE |
| PJC | ANTHEM BCBS – OHIO |
| PJD | BCBS OF MICHIGAN |
| PJE | REGENCE BCBS – OREGON |
| PJI | BCBS OF MICHIGAN |
| PJJ | ANTHEM BCBS – VIRGINIA |
| PJK | BCBS – SOUTH CAROLINA |
| PJM | HIGHMARK INC |
| PJN | CAREFIRST BCBS – MARYLAND |
| PJQ | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PJR | ANTHEM BCBS – OHIO |
| PJS | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PJT | ANTHEM BLUE CROSS – CALIFORNIA |
| PJU | HIGHMARK INC |
| PJV | BLUE CROSS AND BLUE SHIELD-GEORGIA |
| PJX | BLUE CROSS AND BLUE SHIELD-GEORGIA |
| PJZ | BLUE CROSS AND BLUE SHIELD-FLORIDA |
| PKA | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PKB | HIGHMARK INC |
| PKC | PREMERA BLUE CROSS – SEATTLE WA |
| PKD | ANTHEM BCBS – OHIO |
| PKE | ANTHEM BCBS – OHIO |
| PKF | EMPIRE BCBS – NEW YORK |
| PKI | BLUE CROSS AND BLUE SHIELD-GEORGIA |
| PKL | BCBS OF MICHIGAN |
| PKM | BCBS OF MICHIGAN |
| PKQ | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PKU | BCBS – MINNESOTA |
| PKV | WELLPOINT HEALTH NETWORKS – NEVADA |
| PKW | ANTHEM BCBS – OHIO |
| PKX | EMPIRE BCBS – NEW YORK |
| PKY | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PLB | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PLC | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PLD | WELLMARK OF IOWA/SOUTH DAKOTA |
| PLG | CAREFIRST BCBS – MARYLAND |
| PLH | ANTHEM BCBS – OHIO |
| PLM | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PLN | ANTHEM BCBS – OHIO |
| PLP | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PLQ | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PLT | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PLW | ANTHEM BCBS – OHIO |
| PLZ | BLUE ADVANTAGE ADMINS OF ARKANSAS |
| PMB | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PMD | BCBS – NORTH CAROLINA |
| PMG | ANTHEM BLUE CROSS – CALIFORNIA |
| PMH | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PMP | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PMQ | WELLMARK OF IOWA/SOUTH DAKOTA |
| PMS | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PMT | PREMERA BLUE CROSS – SEATTLE WA |
| PMU | BCBS – MINNESOTA |
| PMW | ANTHEM BLUE CROSS – CALIFORNIA |
| PMY | ANTHEM BCBS – MISSOURI |
| PMZ | BLUE CROSS – IDAHO – BOISE |
| PNA | CAREFIRST BCBS – MARYLAND |
| PNC | PREMERA BLUE CROSS – SEATTLE WA |
| PNF | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PNH | CAPITAL BLUE CROSS – HARRISBURG PA |
| PNK | HEALTHCARE ADMINISTRATORS – SEATTLE |
| PNL | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PNM | HIGHMARK INC |
| PNO | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PNQ | NEW MEXICO BCBS |
| PNT | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PNV | HEALTHCARE ADMINISTRATORS – SEATTLE |
| PNW | EMPIRE BCBS – NEW YORK |
| PNX | HIGHMARK INC |
| PNY | ANTHEM BLUE CROSS – CALIFORNIA |
| POA | ANTHEM BCBS – OHIO |
| POB | WELLMARK OF IOWA/SOUTH DAKOTA |
| POC | ANTHEM BLUE CROSS – CALIFORNIA |
| POD | BLUE SHIELD OF CALIFORNIA |
| POF | BLUE CROSS – IDAHO – BOISE |
| POG | ANTHEM BLUE CROSS – CALIFORNIA |
| POI | HIGHMARK INC |
| POJ | BCBS – SOUTH CAROLINA |
| POK | BLUE CROSS AND BLUE SHIELD-FLORIDA |
| PON | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| POP | EMPIRE BCBS – NEW YORK |
| POR | WELLMARK OF IOWA/SOUTH DAKOTA |
| POU | ANTHEM BLUE CROSS – CALIFORNIA |
| POV | ANTHEM BLUE CROSS – CALIFORNIA |
| POW | BLUE SHIELD OF CALIFORNIA |
| POX | WELLMARK OF IOWA/SOUTH DAKOTA |
| PPA | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PPB | PREMERA BLUE CROSS – SEATTLE WA |
| PPC | BLUE CROSS AND BLUE SHIELD OF TEXAS |
| PPE | HIGHMARK INC |
| PPF | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PPH | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PPK | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PPM | HIGHMARK INC |
| PPN | HIGHMARK INC |
| PPO | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PPP | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PPQ | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PPT | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PPU | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PPV | BLUE CROSS – IDAHO – BOISE |
| PPW | HIGHMARK INC |
| PQA | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PQB | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PQC | ANTHEM BCBS – COLORADO |
| PQD | ANTHEM BLUE CROSS – CALIFORNIA |
| PQF | PREMERA BLUE CROSS – SEATTLE WA |
| PQG | ANTHEM BCBS – OHIO |
| PQJ | BLUE CROSS AND BLUE SHIELD OF TEXAS |
| PQL | REGENCE BCBS – OREGON |
| PQM | HIGHMARK INC |
| PQQ | ANTHEM BCBS – COLORADO |
| PQS | ANTHEM BCBS – OHIO |
| PQT | ANTHEM BCBS – OHIO |
| PQU | ANTHEM BLUE CROSS – CALIFORNIA |
| PQV | ANTHEM BLUE CROSS – CALIFORNIA |
| PQW | EMPIRE BCBS – NEW YORK |
| PQZ | ANTHEM BCBS – OHIO |
| PRA | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PRE | ANTHEM BCBS – VIRGINIA |
| PRF | EMPIRE BCBS – NEW YORK |
| PRI | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PRJ | BLUE CROSS AND BLUE SHIELD-GEORGIA |
| PRM | ANTHEM BCBS – OHIO |
| PRO | CAREFIRST BCBS – MARYLAND |
| PRQ | BCBS OF MICHIGAN |
| PRW | ANTHEM BCBS – OHIO |
| PRX | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PRY | ANTHEM BLUE CROSS – CALIFORNIA |
| PSB | BLUE CROSS AND BLUE SHIELD OF TEXAS |
| PSC | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PSE | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PSF | ANTHEM BCBS – VIRGINIA |
| PSH | ANTHEM BCBS – OHIO |
| PSJ | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PSK | HEALTHNOW NEW YORK INC – ALBANY |
| PSL | BCBS – SOUTH CAROLINA |
| PSO | BLUE SHIELD OF CALIFORNIA |
| PSQ | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PSS | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PSU | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PSX | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PTC | ANTHEM BCBS – OHIO |
| PTH | ANTHEM BCBS – OHIO |
| PTJ | ANTHEM BLUE CROSS – CALIFORNIA |
| PTK | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PTL | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PTN | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PTO | ANTHEM BCBS – OHIO |
| PTP | ANTHEM BCBS – VIRGINIA |
| PTR | BLUE ADVANTAGE ADMINS OF ARKANSAS |
| PTT | ANTHEM BLUE CROSS – CALIFORNIA |
| PTV | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PTW | BCBS – RHODE ISLAND |
| PTX | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PUA | BCBS OF MICHIGAN |
| PUC | WELLMARK OF IOWA/SOUTH DAKOTA |
| PUE | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PUG | BCBS OF MICHIGAN |
| PUH | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PUJ | ANTHEM BCBS – OHIO |
| PUK | EMPIRE BCBS – NEW YORK |
| PUN | CAREFIRST BCBS – MARYLAND |
| PUP | BLUE CROSS AND BLUE SHIELD-FLORIDA |
| PUS | BLUE CROSS AND BLUE SHIELD-ARIZONA |
| PUT | BLUE CROSS AND BLUE SHIELD-GEORGIA |
| PUU | BCBS OF MICHIGAN |
| PUV | ANTHEM BCBS – OHIO |
| PUW | BCBS – SOUTH CAROLINA |
| PUX | PREMERA BLUE CROSS – SEATTLE WA |
| PVA | BCBS – MINNESOTA |
| PVB | WELLMARK OF IOWA/SOUTH DAKOTA |
| PVC | BCBS – RHODE ISLAND |
| PVE | WELLPOINT HEALTH NETWORKS-VIRGINIA |
| PVF | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PVH | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PVI | ANTHEM BLUE CROSS – CALIFORNIA |
| PVJ | ANTHEM BCBS – OHIO |
| PVK | ANTHEM BLUE CROSS – CALIFORNIA |
| PVL | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PVP | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PVQ | BLUE SHIELD OF CALIFORNIA |
| PVR | ANTHEM BCBS – OHIO |
| PVS | ARKANSAS BLUE CROSS AND BLUE SHIELD |
| PVT | ANTHEM BCBS – OHIO |
| PVW | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PVY | ANTHEM BCBS – MISSOURI |
| PVZ | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PWB | HIGHMARK INC |
| PWD | ANTHEM BCBS – COLORADO |
| PWE | EMPIRE BCBS – NEW YORK |
| PWF | ANTHEM BLUE CROSS – CALIFORNIA |
| PWG | ANTHEM BCBS – VIRGINIA |
| PWH | MOUNTAIN STATE BCBS – WV |
| PWK | BLUE CROSS AND BLUE SHIELD-GEORGIA |
| PWN | ANTHEM BCBS – OHIO |
| PWO | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PWP | EMPIRE BCBS – NEW YORK |
| PWR | ANTHEM BCBS – OHIO |
| PWS | ANTHEM BCBS – VIRGINIA |
| PWU | BCBS – RHODE ISLAND |
| PWX | BLUE CROSS – IDAHO – BOISE |
| PWY | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PXA | ANTHEM BCBS – OHIO |
| PXB | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PXE | ANTHEM BCBS – OHIO |
| PXF | INDEPENDENCE BLUE CROSS |
| PXG | HMO PARTNERS-HEALTH ADVANTAGE-ARK |
| PXH | BCBS – SOUTH CAROLINA |
| PXI | ANTHEM BLUE CROSS – CALIFORNIA |
| PXJ | BCBS – SOUTH CAROLINA |
| PXL | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PXN | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PXO | BLUE CROSS AND BLUE SHIELD-ARIZONA |
| PXP | HEALTHNOW NEW YORK INC – BUFFALO |
| PXQ | ANTHEM BCBS – OHIO |
| PXR | HEALTHNOW NEW YORK INC – BUFFALO |
| PXT | ANTHEM BLUE CROSS – CALIFORNIA |
| PXV | BLUE CROSS AND BLUE SHIELD-ALABAMA |
| PXY | ANTHEM BCBS – OHIO |
| PXZ | PREMERA BLUE CROSS – SEATTLE WA |
| PYB | EMPIRE BCBS – NEW YORK |
| PYC | BCBS – SOUTH CAROLINA |
| PYD | ANTHEM BLUE CROSS – CALIFORNIA |
| PYE | ANTHEM BLUE CROSS – CALIFORNIA |
| PYF | PREMERA BLUE CROSS – SEATTLE WA |
| PYH | CAREFIRST BCBS – MARYLAND |
| PYJ | BCBS OF MICHIGAN |
| PYK | ANTHEM BCBS – OHIO |
| PYM | EMPIRE BCBS – NEW YORK |
| PYO | BCBS – NORTH CAROLINA |
| PYQ | ANTHEM BCBS – OHIO |
| PYR | ANTHEM BLUE CROSS – CALIFORNIA |
| PYU | BLUE CROSS AND BLUE SHIELD-GEORGIA |
| PYV | BLUE CROSS AND BLUE SHIELD-GEORGIA |
| PYX | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PYY | BCBS – NORTH CAROLINA |
| PZA | BLUE SHIELD OF CALIFORNIA |
| PZC | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PZE | CAREFIRST BCBS – MARYLAND |
| PZF | BLUE SHIELD OF CALIFORNIA |
| PZG | ANTHEM BLUE CROSS – CALIFORNIA |
| PZH | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PZN | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PZP | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PZP | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PZQ | BLUE CROSS AND BLUE SHIELD-FLORIDA |
| PZT | WELLMARK OF IOWA/SOUTH DAKOTA |
| PZV | WELLPOINT HEALTH NETWORKS-VIRGINIA |
| PZW | WELLMARK OF IOWA/SOUTH DAKOTA |
| PZX | BLUE CROSS AND BLUE SHIELD-ILLINOIS |
| PZY | BLUE CROSS BLUE SHIELD OF MICHIGAN |
| PZZ | HEALTHNOW NEW YORK INC – BUFFALO |
