| PAA | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| PAB | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| PAC | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| PAD | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PAE | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PAF | California | Anthem Blue-Cross |
| PAG | California | Blue-Shield of California |
| PAH | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PAI | - | Unallocated/Not Assigned |
| PAJ | Illinois | Blue-Cross Blue-Shield of Illinois |
| PAK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PAL | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PAM | California | Blue-Shield of California |
| PAN | Illinois | Blue-Cross Blue-Shield of Illinois |
| PAO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PAP | Illinois | Blue-Cross Blue-Shield of Illinois |
| PAQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PAR | - | Unallocated/Not Assigned |
| PAS BCBS Prefix | Illinois | Blue-Cross Blue-Shield of Illinois |
| PAT | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PAU | - | Unallocated/Not Assigned |
| PAV | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PAW | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| PAX | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PAY | New York | Excellus Blue-Cross Blue-Shield of New York |
| PAZ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PBA | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PBB | Florida | Florida-Blue |
| PBC | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| PBD | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| PBE | California | Anthem Blue-Cross |
| PBF | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PBG | California | Blue-Shield of California |
| PBH | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| PBI | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| PBJ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PBK | - | Unallocated/Not Assigned |
| PBL | California | Blue-Shield of California |
| PBM | - | Unallocated/Not Assigned |
| PBN | New York (Northeastern) | Blue-Shield of Northeastern New York |
| PBO | California | Blue-Shield of California |
| PBP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PBQ | Alaska | Premera Blue-Cross of Alaska |
| PBR | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PBS | - | Unallocated/Not Assigned |
| PBT | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PBU | Illinois | Blue-Cross Blue-Shield of Illinois |
| PBV | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PBW | Texas | Blue-Cross Blue-Shield of Texas |
| PBX | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PBY | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| PBZ | New York | Empire Blue-Cross Blue-Shield of New York |
| PCA | New York | Empire Blue-Cross Blue-Shield of New York |
| PCB | - | Unallocated/Not Assigned |
| PCC | - | Unallocated/Not Assigned |
| PCD | Texas | Blue-Cross Blue-Shield of Texas |
| PCE | - | Unallocated/Not Assigned |
| PCF | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PCG | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| PCH | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| PCI | California | Blue-Shield of California |
| PCJ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PCK | New York | Empire Blue-Cross Blue-Shield of New York |
| PCL | Arizona | Blue-Cross Blue-Shield of Arizona |
| PCM | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PCN | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PCO | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PCP | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| PCQ | - | Unallocated/Not Assigned |
| PCR | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PCS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PCT | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PCU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PCV | California | Blue-Shield of California |
| PCW | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PCX | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PCY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PCZ | - | Unallocated/Not Assigned |
| PDA | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PDB | Texas | Blue-Cross Blue-Shield of Texas |
| PDC | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PDD | - | Unallocated/Not Assigned |
| PDE | California | Blue-Shield of California |
| PDF | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PDG | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| PDH | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| PDI | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PDJ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PDK | California | Anthem Blue-Cross |
| PDL | California | Anthem Blue-Cross |
| PDM | - | Unallocated/Not Assigned |
| PDN | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PDO | Alabama | Blue-Cross Blue-Shield of Alabama |
| PDP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PDQ | California | Blue-Shield of California |
| PDR | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| PDS | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PDT | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PDU | Illinois | Blue-Cross Blue-Shield of Illinois |
| PDV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PDW | Illinois | Blue-Cross Blue-Shield of Illinois |
| PDX | Michigan | Blue-Cross Blue-Shield of Michigan |
| PDY | Illinois | Blue-Cross Blue-Shield of Illinois |
| PDZ | Alabama | Blue-Cross Blue-Shield of Alabama |
| PEA | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| PEB | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| PEC | Texas | Blue-Cross Blue-Shield of Texas |
| PED | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PEE | - | Unallocated/Not Assigned |
| PEF | Alabama | Blue-Cross Blue-Shield of Alabama |
| PEG | Texas | Blue-Cross Blue-Shield of Texas |
| PEH | New York (Northeastern) | Blue-Shield of Northeastern New York |
| PEI | - | Unallocated/Not Assigned |
| PEJ | Idaho | Blue-Cross of Idaho |
| PEK | New York | Empire Blue-Cross Blue-Shield of New York |
| PEL | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| PEM | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PEN | - | Unallocated/Not Assigned |
| PEO | - | Unallocated/Not Assigned |
| PEP | California | Blue-Shield of California |
| PEQ | - | Unallocated/Not Assigned |
| PER | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PES | Texas | Blue-Cross Blue-Shield of Texas |
| PET | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| PEU | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| PEV | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PEW | - | Unallocated/Not Assigned |
| PEX | Alabama | Blue-Cross Blue-Shield of Alabama |
| PEY | - | Unallocated/Not Assigned |
| PEZ | - | Unallocated/Not Assigned |
| PFA | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| PFB | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PFC | California | Blue-Shield of California |
| PFD | California | Blue-Shield of California |
| PFE | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PFF | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PFG | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| PFH | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| PFI | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PFJ | Illinois | Blue-Cross Blue-Shield of Illinois |
| PFK | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PFL | - | Unallocated/Not Assigned |
| PFM | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| PFN | - | Unallocated/Not Assigned |
| PFO | - | Unallocated/Not Assigned |
| PFP | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PFQ | California | Blue-Shield of California |
| PFR | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| PFS | California | Anthem Blue-Cross |
| PFT | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PFU | Florida | Florida-Blue |
| PFV | - | Unallocated/Not Assigned |
| PFW | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| PFX | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| PFY | Illinois | Blue-Cross Blue-Shield of Illinois |
| PFZ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| PGA | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| PGB | - | Unallocated/Not Assigned |
| PGC | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| PGD | California | Blue-Shield of California |
| PGE | Arizona | Blue-Cross Blue-Shield of Arizona |
| PGF | - | Unallocated/Not Assigned |
| PGG | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| PGH | - | Unallocated/Not Assigned |
| PGI | Illinois | Blue-Cross Blue-Shield of Illinois |
| PGJ | - | Unallocated/Not Assigned |
| PGK | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| PGL | - | Unallocated/Not Assigned |
| PGM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PGN | - | Unallocated/Not Assigned |
| PGO | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PGP | Florida | Florida-Blue |
| PGQ | Arkansas | Arkansas Blue-Cross Blue-Shield |
| PGR | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| PGS | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PGT | - | Unallocated/Not Assigned |
| PGU | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PGV | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PGW | Alabama | Blue-Cross Blue-Shield of Alabama |
| PGX | Alabama | Blue-Cross Blue-Shield of Alabama |
| PGY | New York | Empire Blue-Cross Blue-Shield of New York |
| PGZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| PHA | - | Unallocated/Not Assigned |
| PHB | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PHC | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| PHD | - | Unallocated/Not Assigned |
| PHE | - | Unallocated/Not Assigned |
| PHF | Kansas | Blue-Cross Blue-Shield of Kansas |
| PHG | California | Blue-Shield of California |
| PHH | - | Unallocated/Not Assigned |
| PHI | California | Blue-Shield of California |
| PHJ | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| PHK | - | Unallocated/Not Assigned |
| PHL | California | Blue-Shield of California |
| PHM | California | Anthem Blue-Cross |
| PHN | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| PHO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PHP | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PHQ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PHR | - | Unallocated/Not Assigned |
| PHS | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PHT | Alabama | Blue-Cross Blue-Shield of Alabama |
| PHU BCBS Prefix | California | Blue-Shield of California |
| PHV | - | Unallocated/Not Assigned |
| PHW | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PHX | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PHY | New York | Empire Blue-Cross Blue-Shield of New York |
| PHZ | - | Unallocated/Not Assigned |
| PIA | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PIB | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PIC | - | Unallocated/Not Assigned |
| PID | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| PIE | - | Unallocated/Not Assigned |
| PIF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PIG | - | Unallocated/Not Assigned |
| PIH | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PII | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PIJ | - | Unallocated/Not Assigned |
| PIK | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PIL | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PIM | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| PIN | - | Unallocated/Not Assigned |
| PIO | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| PIP | Arkansas | Arkansas Blue-Cross Blue-Shield |
| PIQ | Arkansas | Arkansas Blue-Cross Blue-Shield |
| PIR | - | Unallocated/Not Assigned |
| PIS | - | Unallocated/Not Assigned |
| PIT | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PIU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PIV | - | Unallocated/Not Assigned |
| PIW | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PIX | Alabama | Blue-Cross Blue-Shield of Alabama |
| PIY | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PIZ | Alabama | Blue-Cross Blue-Shield of Alabama |
| PJA | Alabama | Blue-Cross Blue-Shield of Alabama |
| PJB | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| PJC | California | Anthem Blue-Cross |
| PJD | Michigan | Blue-Cross Blue-Shield of Michigan |
| PJE | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| PJF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PJG | - | Unallocated/Not Assigned |
| PJH | - | Unallocated/Not Assigned |
| PJI | Michigan | Blue-Cross Blue-Shield of Michigan |
| PJJ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PJK | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| PJL | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| PJM | - | Unallocated/Not Assigned |
| PJN | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PJO | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| PJP | Illinois | Blue-Cross Blue-Shield of Illinois |
| PJQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PJR | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PJS | Illinois | Blue-Cross Blue-Shield of Illinois |
| PJT | Illinois | Blue-Cross Blue-Shield of Illinois |
| PJU | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PJV | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PJW | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PJX | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PJY | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| PJZ | Florida | Florida-Blue |
| PKA | Illinois | Blue-Cross Blue-Shield of Illinois |
| PKB | Florida | Florida Explore-My-Plan |
| PKC | - | Unallocated/Not Assigned |
| PKD | California | Blue-Shield of California |
| PKE | - | Unallocated/Not Assigned |
| PKF | Alabama | Blue-Cross Blue-Shield of Alabama |
| PKG | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PKH | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PKI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PKJ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PKK | - | Unallocated/Not Assigned |
| PKL | Michigan | Blue-Cross Blue-Shield of Michigan |
| PKM | Michigan | Blue-Cross Blue-Shield of Michigan |
| PKN | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PKO | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PKP | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| PKQ | California | Anthem Blue-Cross |
| PKR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PKS | California | Anthem Blue-Cross |
| PKT | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PKU | - | Unallocated/Not Assigned |
| PKV | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| PKW | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PKX | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| PKY | - | Unallocated/Not Assigned |
| PKZ | - | Unallocated/Not Assigned |
| PLA | - | Unallocated/Not Assigned |
| PLB | - | Unallocated/Not Assigned |
| PLC | Alabama | Blue-Cross Blue-Shield of Alabama |
| PLD | - | Unallocated/Not Assigned |
| PLE | Michigan | Blue-Cross Blue-Shield of Michigan |
| PLF | - | Unallocated/Not Assigned |
| PLG | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PLH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PLI | - | Unallocated/Not Assigned |
| PLJ | New York | Empire Blue-Cross Blue-Shield of New York |
| PLK | - | Unallocated/Not Assigned |
| PLL | California | Anthem Blue-Cross |
| PLM | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PLN | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PLO | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PLP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PLQ | - | Unallocated/Not Assigned |
| PLR | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| PLS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PLT | New York | Empire Blue-Cross Blue-Shield of New York |
| PLU | Illinois | Blue-Cross Blue-Shield of Illinois |
| PLV | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PLW | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PLX | - | Unallocated/Not Assigned |
| PLY | - | Unallocated/Not Assigned |
| PLZ | - | Unallocated/Not Assigned |
| PMA | Arizona | Blue-Cross Blue-Shield of Arizona |
| PMB BCBS Prefix | Illinois | Blue-Cross Blue-Shield of Illinois |
| PMC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PMD | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| PME | Texas | Blue-Cross Blue-Shield of Texas |
| PMF | - | Unallocated/Not Assigned |
| PMG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PMH | - | Unallocated/Not Assigned |
| PMI | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PMJ | - | Unallocated/Not Assigned |
| PMK | Arizona | Blue-Cross Blue-Shield of Arizona |
| PML | - | Unallocated/Not Assigned |
| PMM | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| PMN | - | Unallocated/Not Assigned |
| PMO | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| PMP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PMQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PMR | Florida | Florida-Blue |
| PMS | California | Blue-Shield of California |
| PMT | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PMU | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PMV | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| PMW | - | Unallocated/Not Assigned |
| PMX | Illinois | Blue-Cross Blue-Shield of Illinois |
| PMY | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| PMZ | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| PNA | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PNB | - | Unallocated/Not Assigned |
| PNC | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PND | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PNE | California | Blue-Shield of California |
| PNF | Illinois | Blue-Cross Blue-Shield of Illinois |
| PNG | - | Unallocated/Not Assigned |
| PNH | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| PNI | Michigan | Blue-Cross Blue-Shield of Michigan |
| PNJ | - | Unallocated/Not Assigned |
| PNK | Illinois | Blue-Cross Blue-Shield of Illinois |
| PNL | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| PNM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PNN | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PNO | California | Anthem Blue-Cross |
| PNP | California | Anthem Blue-Cross |
| PNQ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PNR | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PNS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PNT | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PNU | Texas | Blue-Cross Blue-Shield of Texas |
| PNV | - | Unallocated/Not Assigned |
| PNW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PNX | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PNY | - | Unallocated/Not Assigned |
| PNZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| POA | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| POB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| POC | - | Unallocated/Not Assigned |
| POD | California | Blue-Shield of California |
| POE | California | Blue-Shield of California |
| POF | Idaho | Blue-Cross of Idaho |
| POG | California | Anthem Blue-Cross |
| POH | California | Anthem Blue-Cross |
| POI | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| POJ | - | Unallocated/Not Assigned |
| POK | California | Blue-Shield of California |
| POL | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| POM | - | Unallocated/Not Assigned |
| PON | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| POO | California | Blue-Shield of California |
| POP | California | Blue-Shield of California |
| POQ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| POR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| POS | - | Unallocated/Not Assigned |
| POT | California | Blue-Shield of California |
| POU | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| POV | California | Anthem Blue-Cross |
| POW | California | Blue-Shield of California |
| POX | - | Unallocated/Not Assigned |
| POY | California | Blue-Shield of California |
| POZ | - | Unallocated/Not Assigned |
| PPA BCBS Prefix | Alabama | Blue-Cross Blue-Shield of Alabama |
| PPB | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PPC | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PPD | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| PPE | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PPF | Illinois | Blue-Cross Blue-Shield of Illinois |
| PPG | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PPH | - | Unallocated/Not Assigned |
| PPI | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PPJ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PPK | Illinois | Blue-Cross Blue-Shield of Illinois |
| PPL | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| PPM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PPN | - | Unallocated/Not Assigned |
| PPO | Illinois | Blue-Cross Blue-Shield of Illinois |
| PPP | Illinois | Blue-Cross Blue-Shield of Illinois |
| PPQ | Illinois | Blue-Cross Blue-Shield of Illinois |
| PPR | Alabama | Blue-Cross Blue-Shield of Alabama |
| PPS | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PPT | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PPU | Illinois | Blue-Cross Blue-Shield of Illinois |
| PPV | Idaho | Blue-Cross of Idaho |
| PPW | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PPX | Florida | Florida-Blue |
| PPY | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PPZ | - | Unallocated/Not Assigned |
| PQA | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PQB | Alabama | Blue-Cross Blue-Shield of Alabama |
| PQC | - | Unallocated/Not Assigned |
| PQD | California | Anthem Blue-Cross |
| PQE | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PQF | - | Unallocated/Not Assigned |
| PQG | New York | Empire Blue-Cross Blue-Shield of New York |
| PQH | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PQI | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| PQJ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| PQK | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| PQL | - | Unallocated/Not Assigned |
| PQM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PQN | - | Unallocated/Not Assigned |
| PQO | Idaho | Blue-Cross of Idaho |
| PQP | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PQQ | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| PQR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PQS | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PQT | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| PQU | California | Blue-Shield of California |
| PQV | California | Anthem Blue-Cross |
| PQW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PQX | California | Anthem Blue-Cross |
| PQY | - | Unallocated/Not Assigned |
| PQZ | - | Unallocated/Not Assigned |
| PRA | Alabama | Blue-Cross Blue-Shield of Alabama |
| PRB | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| PRC | California | Blue-Shield of California |
| PRD | Alabama | Blue-Cross Blue-Shield of Alabama |
| PRE | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| PRF | New York | Empire Blue-Cross Blue-Shield of New York |
| PRG | - | Unallocated/Not Assigned |
| PRH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PRI | - | Unallocated/Not Assigned |
| PRJ | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PRK | - | Unallocated/Not Assigned |
| PRL | Arkansas | Arkansas Blue-Cross Blue-Shield |
| PRM | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| PRN | - | Unallocated/Not Assigned |
| PRO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PRP | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PRQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PRR | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PRS | - | Unallocated/Not Assigned |
| PRT | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| PRU | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| PRV | Alabama | Blue-Cross Blue-Shield of Alabama |
| PRW | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PRX | Alabama | Blue-Cross Blue-Shield of Alabama |
| PRY | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| PRZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| PSA | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PSB | Texas | Blue-Cross Blue-Shield of Texas |
| PSC | Illinois | Blue-Cross Blue-Shield of Illinois |
| PSD | - | Unallocated/Not Assigned |
| PSE | California | Blue-Shield of California |
| PSF | - | Unallocated/Not Assigned |
| PSG | - | Unallocated/Not Assigned |
| PSH | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| PSI | California | Blue-Shield of California |
| PSJ | - | Unallocated/Not Assigned |
| PSK | - | Unallocated/Not Assigned |
| PSL | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PSM | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PSN | - | Unallocated/Not Assigned |
| PSO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PSP | California | Blue-Shield of California |
| PSQ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PSR | - | Unallocated/Not Assigned |
| PSS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PST | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| PSU | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PSV | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PSW | - | Unallocated/Not Assigned |
| PSX | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| PSY | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| PSZ | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| PTA | California | Anthem Blue-Cross |
| PTB | California | Blue-Shield of California |
| PTC | California | Blue-Shield of California |
| PTD | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| PTE | Texas | Blue-Cross Blue-Shield of Texas |
| PTF | - | Unallocated/Not Assigned |
| PTG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PTH | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| PTI | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PTJ | - | Unallocated/Not Assigned |
| PTK | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| PTL | Illinois | Blue-Cross Blue-Shield of Illinois |
| PTM | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| PTN | Illinois | Blue-Cross Blue-Shield of Illinois |
| PTO | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PTP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PTQ | New York | Empire Blue-Cross Blue-Shield of New York |
| PTR | Arkansas | Arkansas Blue-Cross Blue-Shield |
| PTS | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| PTT | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| PTU | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PTV | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| PTW | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| PTX | Montana | Blue-Cross Blue-Shield of Montana |
| PTY | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| PTZ | - | Unallocated/Not Assigned |
| PUA | Michigan | Blue-Cross Blue-Shield of Michigan |
| PUB | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| PUC | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PUD | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PUE | California | Blue-Shield of California |
| PUF | - | Unallocated/Not Assigned |
| PUG | Michigan | Blue-Cross Blue-Shield of Michigan |
| PUH | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| PUI | - | Unallocated/Not Assigned |
| PUJ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PUK | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| PUL | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PUM | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| PUN | - | Unallocated/Not Assigned |
| PUO | Arizona | Blue-Cross Blue-Shield of Arizona |
| PUP | Florida | Florida-Blue |
| PUQ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PUR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PUS | Arizona | Blue-Cross Blue-Shield of Arizona |
| PUT | Michigan | Blue-Cross Blue-Shield of Michigan |
| PUU | Michigan | Blue-Cross Blue-Shield of Michigan |
| PUV | Michigan | Blue-Cross Blue-Shield of Michigan |
| PUW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PUX | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PUY | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PUZ | - | Unallocated/Not Assigned |
| PVA | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| PVB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PVC | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| PVD | Illinois | Blue-Cross Blue-Shield of Illinois |
| PVE | - | Unallocated/Not Assigned |
| PVF | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| PVG | California | Anthem Blue-Cross |
| PVH | Alabama | Blue-Cross Blue-Shield of Alabama |
| PVI | - | Unallocated/Not Assigned |
| PVJ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PVK | California | Anthem Blue-Cross |
| PVL | - | Unallocated/Not Assigned |
| PVM | - | Unallocated/Not Assigned |
| PVN | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PVO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PVP | California | Anthem Blue-Cross |
| PVQ | - | Unallocated/Not Assigned |
| PVR | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PVS | - | Unallocated/Not Assigned |
| PVT | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PVU | - | Unallocated/Not Assigned |
| PVV | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| PVW | Florida | Florida-Blue |
| PVX | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| PVY | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| PVZ | - | Unallocated/Not Assigned |
| PWA | Florida | Florida-Blue |
| PWB | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PWC | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| PWD | Illinois | Blue-Cross Blue-Shield of Illinois |
| PWE | New York | Empire Blue-Cross Blue-Shield of New York |
| PWF | California | Anthem Blue-Cross |
| PWG | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PWH | - | Unallocated/Not Assigned |
| PWI | - | Unallocated/Not Assigned |
| PWJ | North Carolina | Blue-Cross North Carolina |
| PWK | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PWL | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| PWM | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PWN | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PWO | California | Blue-Shield of California |
| PWP | New York | Empire Blue-Cross Blue-Shield of New York |
| PWQ | - | Unallocated/Not Assigned |
| PWR | - | Unallocated/Not Assigned |
| PWS | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PWT | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PWU | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PWV | Illinois | Blue-Cross Blue-Shield of Illinois |
| PWW | Illinois | Blue-Cross Blue-Shield of Illinois |
| PWX | Idaho | Blue-Cross of Idaho |
| PWY | - | Unallocated/Not Assigned |
| PWZ | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| PXA | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PXB | Florida | Florida-Blue |
| PXC | - | Unallocated/Not Assigned |
| PXD | Arizona | Blue-Cross Blue-Shield of Arizona |
| PXE | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PXF | - | Unallocated/Not Assigned |
| PXG | Arkansas | Arkansas Blue-Cross Blue-Shield |
| PXH | - | Unallocated/Not Assigned |
| PXI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PXJ | Florida | Florida-Blue |
| PXK | - | Unallocated/Not Assigned |
| PXL | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| PXM | - | Unallocated/Not Assigned |
| PXN BCBS Prefix | Florida | Florida-Blue |
| PXO | Arizona | Blue-Cross Blue-Shield of Arizona |
| PXP | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| PXQ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| PXR | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PXS | Illinois | Blue-Cross Blue-Shield of Illinois |
| PXT | - | Unallocated/Not Assigned |
| PXU | Michigan | Blue-Cross Blue-Shield of Michigan |
| PXV | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| PXW | Michigan | Blue-Cross Blue-Shield of Michigan |
| PXX | - | Unallocated/Not Assigned |
| PXY | - | Unallocated/Not Assigned |
| PXZ | - | Unallocated/Not Assigned |
| PYA | California | Blue-Shield of California |
| PYB | New York | Empire Blue-Cross Blue-Shield of New York |
| PYC | - | Unallocated/Not Assigned |
| PYD | - | Unallocated/Not Assigned |
| PYE | Illinois | Blue-Cross Blue-Shield of Illinois |
| PYF | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| PYG | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| PYH | Texas | Blue-Cross Blue-Shield of Texas |
| PYI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PYJ | Michigan | Blue-Cross Blue-Shield of Michigan |
| PYK | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| PYL | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| PYM | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PYN BCBS Prefix | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PYO | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| PYP | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PYQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PYR | - | Unallocated/Not Assigned |
| PYS | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PYT | - | Unallocated/Not Assigned |
| PYU | - | Unallocated/Not Assigned |
| PYV | - | Unallocated/Not Assigned |
| PYW | - | Unallocated/Not Assigned |
| PYX | - | Unallocated/Not Assigned |
| PYY | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PYZ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| PZA | Texas | Blue-Cross Blue-Shield of Texas |
| PZB | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PZC | - | Unallocated/Not Assigned |
| PZD | Illinois | Blue-Cross Blue-Shield of Illinois |
| PZE | - | Unallocated/Not Assigned |
| PZF | California | Blue-Shield of California |
| PZG | California | Anthem Blue-Cross |
| PZH | - | Unallocated/Not Assigned |
| PZI | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| PZJ | Michigan | Blue-Cross Blue-Shield of Michigan |
| PZK | - | Unallocated/Not Assigned |
| PZL | - | Unallocated/Not Assigned |
| PZM | California | Anthem Blue-Cross |
| PZN | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| PZO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| PZP | - | Unallocated/Not Assigned |
| PZQ | Florida | Florida-Blue |
| PZR | New York | Empire Blue-Cross Blue-Shield of New York |
| PZS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PZT | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PZU | - | Unallocated/Not Assigned |
| PZV | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| PZW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| PZX | - | Unallocated/Not Assigned |
| PZY | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| PZZ | New York (Western) | Blue-Cross Blue-Shield of Western New York |