Today you will find The BCBS Alpha Prefix List from NAA to NZZ. The alpha prefix is very important to the identification number. The prefix acts as a key element in confirming the members’ eligibility and coverage information. Prefixes are also used to identify and correctly route claims to the appropriate Blue Cross Blue Shield Plan for processing. Most members with coverage through a Blue Cross Blue Shield Plan are assigned a Three Letter alpha prefix as a part of their unique identification number. The alpha prefix can easily be identified as it is the first three characters.
| BCBS Prefix | State Lookup | BCBS Company |
|---|---|---|
| NAA | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| NAB | Arkansas | Arkansas Blue-Cross Blue-Shield |
| NAC | Alabama | Blue-Cross Blue-Shield of Alabama |
| NAD | – | Unallocated/Not Assigned |
| NAE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NAF | Alabama | Blue-Cross Blue-Shield of Alabama |
| NAG | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| NAH | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| NAI | Texas | Blue-Cross Blue-Shield of Texas |
| NAJ | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| NAK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NAL | Michigan | Blue-Cross Blue-Shield of Michigan |
| NAM | Idaho | Blue-Cross of Idaho |
| NAN | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NAO | California | Blue-Shield of California |
| NAP | California | Blue-Shield of California |
| NAQ | – | Unallocated/Not Assigned |
| NAR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NAS | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NAT | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NAU | New York | Excellus Blue-Cross Blue-Shield of New York |
| NAV | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NAW | Michigan | Blue-Cross Blue-Shield of Michigan |
| NAX | Michigan | Blue-Cross Blue-Shield of Michigan |
| NAY | Alaska | Premera Blue-Cross of Alaska |
| NAZ | California | Blue-Shield of California |
| NBA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NBB | – | Unallocated/Not Assigned |
| NBC | – | Unallocated/Not Assigned |
| NBD | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NBE | Arizona | Blue-Cross Blue-Shield of Arizona |
| NBF | – | Unallocated/Not Assigned |
| NBG | – | Unallocated/Not Assigned |
| NBH | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| NBI | Michigan | Blue-Cross Blue-Shield of Michigan |
| NBJ | – | Unallocated/Not Assigned |
| NBK | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| NBL | – | Unallocated/Not Assigned |
| NBM | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NBN | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NBO | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| NBP | New York | Empire Blue-Cross Blue-Shield of New York |
| NBQ | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NBR | Illinois | Blue-Cross Blue-Shield of Illinois |
| NBS | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NBT | Arizona | Blue-Cross Blue-Shield of Arizona |
| NBU | Michigan | Blue-Cross Blue-Shield of Michigan |
| NBV | – | Unallocated/Not Assigned |
| NBW | Illinois | Blue-Cross Blue-Shield of Illinois |
| NBX | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| NBY | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NBZ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NCA | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| NCB | Illinois | Blue-Cross Blue-Shield of Illinois |
| NCC | – | Unallocated/Not Assigned |
| NCD | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| NCE | Michigan | Blue-Cross Blue-Shield of Michigan |
| NCF BCBS Prefix | California | Anthem Blue-Cross |
| NCG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NCH | Michigan | Blue-Cross Blue-Shield of Michigan |
| NCI | Illinois | Blue-Cross Blue-Shield of Illinois |
| NCJ | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NCK | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NCL | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NCM | New York | Empire Blue-Cross Blue-Shield of New York |
| NCN | Illinois | Blue-Cross Blue-Shield of Illinois |
| NCO | California | Blue-Shield of California |
| NCP | – | Unallocated/Not Assigned |
| NCQ | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| NCR | New York | Empire Blue-Cross Blue-Shield of New York |
| NCS | Arkansas | Arkansas Blue-Cross Blue-Shield |
| NCT | Alaska | Premera Blue-Cross of Alaska |
| NCU | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NCV | – | Unallocated/Not Assigned |
| NCW | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NCX | Illinois | Blue-Cross Blue-Shield of Illinois |
| NCY | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NCZ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NDA | – | Unallocated/Not Assigned |
| NDB | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| NDC | – | Unallocated/Not Assigned |
| NDD | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NDE | Michigan | Blue-Cross Blue-Shield of Michigan |
| NDF | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| NDG | California | Anthem Blue-Cross |
| NDH | Alabama | Blue-Cross Blue-Shield of Alabama |
| NDI | – | Unallocated/Not Assigned |
| NDJ | Alabama | Blue-Cross Blue-Shield of Alabama |
| NDK | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| NDL | – | Unallocated/Not Assigned |
| NDM | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| NDN | – | Unallocated/Not Assigned |
| NDO | California | Blue-Shield of California |
| NDP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NDQ | California | Blue-Shield of California |
| NDR | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| NDS | – | Unallocated/Not Assigned |
| NDT | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NDU | – | Unallocated/Not Assigned |
| NDV | – | Unallocated/Not Assigned |
| NDW | – | Unallocated/Not Assigned |
| NDX | – | Unallocated/Not Assigned |
| NDY | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NDZ | – | Unallocated/Not Assigned |
| NEA | Illinois | Blue-Cross Blue-Shield of Illinois |
| NEB | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| NEC | Illinois | Blue-Cross Blue-Shield of Illinois |
| NED | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| NEE | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| NEF | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| NEG | Florida | Florida-Blue |
| NEH | – | Unallocated/Not Assigned |
| NEI BCBS Prefix | Illinois | Blue-Cross Blue-Shield of Illinois |
| NEJ | – | Unallocated/Not Assigned |
| NEK | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| NEL | Alabama | Blue-Cross Blue-Shield of Alabama |
| NEM | – | Unallocated/Not Assigned |
| NEN | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NEO | – | Unallocated/Not Assigned |
| NEP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| NEQ | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| NER | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NES | Florida | Florida-Blue |
| NET | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| NEU | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| NEV | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| NEW | Alabama | Blue-Cross Blue-Shield of Alabama |
| NEX | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NEY | – | Unallocated/Not Assigned |
| NEZ | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| NFA | Illinois | Blue-Cross Blue-Shield of Illinois |
| NFB | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| NFC | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NFD | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| NFE | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NFF | – | Unallocated/Not Assigned |
| NFG | Illinois | Blue-Cross Blue-Shield of Illinois |
| NFH | – | Unallocated/Not Assigned |
| NFI | Vermont | Blue-Cross Blue-Shield of Vermont |
| NFJ | New York | Excellus Blue-Cross Blue-Shield of New York |
| NFK | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NFL | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| NFM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| NFN | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| NFO | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NFP | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| NFQ | – | Unallocated/Not Assigned |
| NFR | – | Unallocated/Not Assigned |
| NFS | Florida | Florida-Blue |
| NFT | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| NFU | – | Unallocated/Not Assigned |
| NFV | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NFW | – | Unallocated/Not Assigned |
| NFX | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NFY | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NFZ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NGA | – | Unallocated/Not Assigned |
| NGB | Florida | Florida-Blue |
| NGC | Illinois | Blue-Cross Blue-Shield of Illinois |
| NGD | Florida | Florida-Blue |
| NGE | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NGF | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NGG | California | Anthem Blue-Cross |
| NGH | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| NGI | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NGJ | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NGK | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NGL | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| NGM | – | Unallocated/Not Assigned |
| NGN | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NGO BCBS Prefix | California | Anthem Blue-Cross |
| NGP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NGQ | – | Unallocated/Not Assigned |
| NGR | – | Unallocated/Not Assigned |
| NGS | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NGT | – | Unallocated/Not Assigned |
| NGU | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| NGV | – | Unallocated/Not Assigned |
| NGW | California | Blue-Shield of California |
| NGX | Illinois | Blue-Cross Blue-Shield of Illinois |
| NGY | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NGZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NHA | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| NHB | Alabama | Blue-Cross Blue-Shield of Alabama |
| NHC | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| NHD | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NHE | – | Unallocated/Not Assigned |
| NHF | – | Unallocated/Not Assigned |
| NHG | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| NHH | California | Blue-Shield of California |
| NHI | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NHJ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| NHK | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| NHL | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NHM | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NHN | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| NHO | California | Blue-Shield of California |
| NHP | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| NHQ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NHR | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| NHS | – | Unallocated/Not Assigned |
| NHT | Michigan | Blue-Cross Blue-Shield of Michigan |
| NHU | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| NHV | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| NHW | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| NHX | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NHY | – | Unallocated/Not Assigned |
| NHZ | – | Unallocated/Not Assigned |
| NIA | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| NIB | – | Unallocated/Not Assigned |
| NIC | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NID | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NIE | California | Anthem Blue-Cross |
| NIF | – | Unallocated/Not Assigned |
| NIG | – | Unallocated/Not Assigned |
| NIH | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NII | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NIJ | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| NIK | – | Unallocated/Not Assigned |
| NIL | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NIM | – | Unallocated/Not Assigned |
| NIN | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| NIO | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NIP | California | Blue-Shield of California |
| NIQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NIR | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| NIS | Idaho | Blue-Cross of Idaho |
| NIT | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NIU | Florida | Florida-Blue |
| NIV | California | Anthem Blue-Cross |
| NIW | New York | Empire Blue-Cross Blue-Shield of New York |
| NIX | New York | Empire Blue-Cross Blue-Shield of New York |
| NIY | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| NIZ | – | Unallocated/Not Assigned |
| NJA | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NJB | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| NJC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NJD | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NJE | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NJF | Illinois | Blue-Cross Blue-Shield of Illinois |
| NJG | Texas | Blue-Cross Blue-Shield of Texas |
| NJH | – | Unallocated/Not Assigned |
| NJI | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NJJ | – | Unallocated/Not Assigned |
| NJK | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NJL | Michigan | Blue-Cross Blue-Shield of Michigan |
| NJM | California | Anthem Blue-Cross |
| NJN | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NJO | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NJP | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NJQ | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NJR | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NJS | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NJT | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NJU | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| NJV | Michigan | Blue-Cross Blue-Shield of Michigan |
| NJW BCBS Prefix | – | Unallocated/Not Assigned |
| NJX BCBS Prefix | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NJY | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| NJZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NKA | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| NKB | California | Anthem Blue-Cross |
| NKC | – | Unallocated/Not Assigned |
| NKD | – | Unallocated/Not Assigned |
| NKE | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NKF | Alabama | Blue-Cross Blue-Shield of Alabama |
| NKG | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NKH | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NKI | – | Unallocated/Not Assigned |
| NKJ | Michigan | Blue-Cross Blue-Shield of Michigan |
| NKK | Michigan | Blue-Cross Blue-Shield of Michigan |
| NKL | Illinois | Blue-Cross Blue-Shield of Illinois |
| NKM | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| NKN | California | Anthem Blue-Cross |
| NKO | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NKP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NKQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| NKR | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| NKS | Michigan | Blue-Cross Blue-Shield of Michigan |
| NKT | Illinois | Blue-Cross Blue-Shield of Illinois |
| NKU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NKV | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NKW | – | Unallocated/Not Assigned |
| NKX | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| NKY | Michigan | Blue-Cross Blue-Shield of Michigan |
| NKZ | – | Unallocated/Not Assigned |
| NLA | Michigan | Blue-Cross Blue-Shield of Michigan |
| NLB | Illinois | Blue-Cross Blue-Shield of Illinois |
| NLC | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| NLD | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NLE | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NLF | – | Unallocated/Not Assigned |
| NLG | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NLH | Michigan | Blue-Cross Blue-Shield of Michigan |
| NLI | Alabama | Blue-Cross Blue-Shield of Alabama |
| NLJ | Alabama | Blue-Cross Blue-Shield of Alabama |
| NLK | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NLL | Illinois | Blue-Cross Blue-Shield of Illinois |
| NLM BCBS Prefix | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| NLN | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| NLO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NLP | California | Blue-Shield of California |
| NLQ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NLR | Texas | Blue-Cross Blue-Shield of Texas |
| NLS | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NLT BCBS Prefix | Texas | Blue-Cross Blue-Shield of Texas |
| NLU | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NLV | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NLW | – | Unallocated/Not Assigned |
| NLX | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NLY | – | Unallocated/Not Assigned |
| NLZ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NMA | Florida | Florida-Blue |
| NMB | – | Unallocated/Not Assigned |
| NMC | – | Unallocated/Not Assigned |
| NMD | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| NME | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NMF | – | Unallocated/Not Assigned |
| NMG | – | Unallocated/Not Assigned |
| NMH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NMI | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NMJ | New Mexico | Blue-Cross Blue-Shield of New Mexico |
| NMK | – | Unallocated/Not Assigned |
| NML | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NMM | New Mexico | Blue-Cross Blue-Shield of New Mexico |
| NMN | – | Unallocated/Not Assigned |
| NMO | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NMP | Illinois | Blue-Cross Blue-Shield of Illinois |
| NMQ | – | Unallocated/Not Assigned |
| NMR | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NMS | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NMT | Illinois | Blue-Cross Blue-Shield of Illinois |
| NMU | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| NMV | – | Unallocated/Not Assigned |
| NMW | Illinois | Blue-Cross Blue-Shield of Illinois |
| NMX | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| NMY | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| NMZ | – | Unallocated/Not Assigned |
| NNA | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| NNB | – | Unallocated/Not Assigned |
| NNC | Idaho | Blue-Cross of Idaho |
| NND | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NNE | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NNF | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| NNG | Arizona | Blue-Cross Blue-Shield of Arizona |
| NNH | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| NNI | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NNJ | Arizona | Blue-Cross Blue-Shield of Arizona |
| NNK | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NNL | – | Unallocated/Not Assigned |
| NNM | – | Unallocated/Not Assigned |
| NNN | Illinois | Blue-Cross Blue-Shield of Illinois |
| NNO | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NNP | Illinois | Blue-Cross Blue-Shield of Illinois |
| NNQ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NNR | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NNS | – | Unallocated/Not Assigned |
| NNT | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NNU | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| NNV | – | Unallocated/Not Assigned |
| NNW | Montana | Blue-Cross Blue-Shield of Montana |
| NNX | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| NNY | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NNZ | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| NOA | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| NOB | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NOC | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NOD | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NOE | California | Anthem Blue-Cross |
| NOF | Michigan | Blue-Cross Blue-Shield of Michigan |
| NOG | Michigan | Blue-Cross Blue-Shield of Michigan |
| NOH | – | Unallocated/Not Assigned |
| NOI | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NOJ | – | Unallocated/Not Assigned |
| NOK | – | Unallocated/Not Assigned |
| NOL | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| NOM | – | Unallocated/Not Assigned |
| NON | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NOO | – | Unallocated/Not Assigned |
| NOP | – | Unallocated/Not Assigned |
| NOQ | – | Unallocated/Not Assigned |
| NOR | Arizona | Blue-Cross Blue-Shield of Arizona |
| NOS | – | Unallocated/Not Assigned |
| NOT | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NOU | California | Anthem Blue-Cross |
| NOV | – | Unallocated/Not Assigned |
| NOW | – | Unallocated/Not Assigned |
| NOX | – | Unallocated/Not Assigned |
| NOY | California | Blue-Shield of California |
| NOZ | – | Unallocated/Not Assigned |
| NPA | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NPB | – | Unallocated/Not Assigned |
| NPC | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| NPD | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| NPE | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| NPF | – | Unallocated/Not Assigned |
| NPG | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NPH | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NPI | Michigan | Blue-Cross Blue-Shield of Michigan |
| NPJ | Florida | Florida-Blue |
| NPK | Michigan | Blue-Cross Blue-Shield of Michigan |
| NPL | Michigan | Blue-Cross Blue-Shield of Michigan |
| NPM | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| NPN | – | Unallocated/Not Assigned |
| NPO | California | Blue-Shield of California |
| NPP | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| NPQ | – | Unallocated/Not Assigned |
| NPR | Illinois | Blue-Cross Blue-Shield of Illinois |
| NPS | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NPT | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NPU | New York | Empire Blue-Cross Blue-Shield of New York |
| NPV | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NPW | – | Unallocated/Not Assigned |
| NPX | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| NPY | – | Unallocated/Not Assigned |
| NPZ | – | Unallocated/Not Assigned |
| NQA | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NQB | – | Unallocated/Not Assigned |
| NQC | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NQD | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| NQE | – | Unallocated/Not Assigned |
| NQF | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NQG | Michigan | Blue-Cross Blue-Shield of Michigan |
| NQH | – | Unallocated/Not Assigned |
| NQI | Michigan | Blue-Cross Blue-Shield of Michigan |
| NQJ | – | Unallocated/Not Assigned |
| NQK | – | Unallocated/Not Assigned |
| NQL | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| NQM | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| NQN | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NQO | Idaho | Blue-Cross of Idaho |
| NQP | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| NQQ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| NQR | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NQS | – | Unallocated/Not Assigned |
| NQT | – | Unallocated/Not Assigned |
| NQU | Michigan | Blue-Cross Blue-Shield of Michigan |
| NQV | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NQW | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| NQX | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NQY | – | Unallocated/Not Assigned |
| NQZ | – | Unallocated/Not Assigned |
| NRA | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| NRB | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NRC | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| NRD | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| NRE | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| NRF | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NRG | Illinois | Blue-Cross Blue-Shield of Illinois |
| NRH | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NRI | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| NRJ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NRK | – | Unallocated/Not Assigned |
| NRL | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NRM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NRN | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| NRO | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NRP | – | Unallocated/Not Assigned |
| NRQ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NRR | – | Unallocated/Not Assigned |
| NRS | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NRT | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| NRU | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NRV | – | Unallocated/Not Assigned |
| NRW | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NRX | – | Unallocated/Not Assigned |
| NRY | – | Unallocated/Not Assigned |
| NRZ | – | Unallocated/Not Assigned |
| NSA BCBS Prefix | California | Anthem Blue-Cross |
| NSB | – | Unallocated/Not Assigned |
| NSC | California | Blue-Shield of California |
| NSD | Michigan | Blue-Cross Blue-Shield of Michigan |
| NSE | – | Unallocated/Not Assigned |
| NSF | – | Unallocated/Not Assigned |
| NSG | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NSH | – | Unallocated/Not Assigned |
| NSI | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NSJ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NSK | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NSL | California | Blue-Shield of California |
| NSM | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NSN | – | Unallocated/Not Assigned |
| NSO | New York | Excellus Blue-Cross Blue-Shield of New York |
| NSP | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| NSQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NSR | Idaho | Blue-Cross of Idaho |
| NSS | Michigan | Blue-Cross Blue-Shield of Michigan |
| NST | – | Unallocated/Not Assigned |
| NSU | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NSV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NSW | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NSX | – | Unallocated/Not Assigned |
| NSY | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NSZ | – | Unallocated/Not Assigned |
| NTA | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| NTB | Michigan | Blue-Cross Blue-Shield of Michigan |
| NTC | – | Unallocated/Not Assigned |
| NTD | – | Unallocated/Not Assigned |
| NTE | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| NTF | – | Unallocated/Not Assigned |
| NTG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NTH | – | Unallocated/Not Assigned |
| NTI | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NTJ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| NTK | – | Unallocated/Not Assigned |
| NTL | – | Unallocated/Not Assigned |
| NTM | Illinois | Blue-Cross Blue-Shield of Illinois |
| NTN | California | Anthem Blue-Cross |
| NTO | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NTP | New York | Empire Blue-Cross Blue-Shield of New York |
| NTQ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| NTR | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NTS | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| NTT | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NTU | Alabama | Blue-Cross Blue-Shield of Alabama |
| NTV | California | Blue-Shield of California |
| NTW | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NTX | California | Blue-Shield of California |
| NTY | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NTZ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NUA | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NUB | West Virginia | Highmark Blue-Cross Blue-Shield of West Virginia |
| NUC | Illinois | Blue-Cross Blue-Shield of Illinois |
| NUD | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| NUE | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NUF | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NUG | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NUH | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NUI | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NUJ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NUK | Texas | Blue-Cross Blue-Shield of Texas |
| NUL | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NUM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NUN | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| NUO | Michigan | Blue-Cross Blue-Shield of Michigan |
| NUP | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NUQ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NUR | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| NUS | Illinois | Blue-Cross Blue-Shield of Illinois |
| NUT | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NUU | Illinois | Blue-Cross Blue-Shield of Illinois |
| NUV | Illinois | Blue-Cross Blue-Shield of Illinois |
| NUW | – | Unallocated/Not Assigned |
| NUX | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| NUY | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| NUZ | – | Unallocated/Not Assigned |
| NVA | – | Unallocated/Not Assigned |
| NVB | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NVC | – | Unallocated/Not Assigned |
| NVD | Illinois | Blue-Cross Blue-Shield of Illinois |
| NVE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NVF | – | Unallocated/Not Assigned |
| NVG | Michigan | Blue-Cross Blue-Shield of Michigan |
| NVH | – | Unallocated/Not Assigned |
| NVI | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| NVJ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| NVK | Texas | Blue-Cross Blue-Shield of Texas |
| NVL | Texas | Blue-Cross Blue-Shield of Texas |
| NVM | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NVN | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NVO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| NVP | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NVQ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| NVR | – | Unallocated/Not Assigned |
| NVS | – | Unallocated/Not Assigned |
| NVT | Florida | Florida-Blue |
| NVU | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NVV | Illinois | Blue-Cross Blue-Shield of Illinois |
| NVW | – | Unallocated/Not Assigned |
| NVX | Illinois | Blue-Cross Blue-Shield of Illinois |
| NVY | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NVZ | Florida | Florida-Blue |
| NWA | – | Unallocated/Not Assigned |
| NWB | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NWC | – | Unallocated/Not Assigned |
| NWD | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| NWE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NWF | – | Unallocated/Not Assigned |
| NWG | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NWH | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NWI | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| NWJ | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NWK | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| NWL | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NWM | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NWN | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NWO | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NWP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| NWQ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NWR | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NWS | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NWT | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NWU | – | Unallocated/Not Assigned |
| NWV | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| NWW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NWX | Idaho | Blue-Cross of Idaho |
| NWY | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| NWZ | – | Unallocated/Not Assigned |
| NXA | – | Unallocated/Not Assigned |
| NXB | – | Unallocated/Not Assigned |
| NXC | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| NXD | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| NXE | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NXF | – | Unallocated/Not Assigned |
| NXG | Arizona | Blue-Cross Blue-Shield of Arizona |
| NXH | California | Blue-Shield of California |
| NXI | California | Blue-Shield of California |
| NXJ | – | Unallocated/Not Assigned |
| NXK | – | Unallocated/Not Assigned |
| NXL | – | Unallocated/Not Assigned |
| NXM | – | Unallocated/Not Assigned |
| NXN | Idaho | Blue-Cross of Idaho |
| NXO | New York (Northeastern) | Blue-Shield of Northeastern New York |
| NXP | – | Unallocated/Not Assigned |
| NXQ | Illinois | Blue-Cross Blue-Shield of Illinois |
| NXR | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| NXS | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| NXT | California | Blue-Shield of California |
| NXU | New York | Empire Blue-Cross Blue-Shield of New York |
| NXV | – | Unallocated/Not Assigned |
| NXW | Alaska | Premera Blue-Cross of Alaska |
| NXX | – | Unallocated/Not Assigned |
| NXY | – | Unallocated/Not Assigned |
| NXZ | – | Unallocated/Not Assigned |
| NYA | New York | Empire Blue-Cross Blue-Shield of New York |
| NYB | New York | Empire Blue-Cross Blue-Shield of New York |
| NYC | New York | Empire Blue-Cross Blue-Shield of New York |
| NYD | New York | Empire Blue-Cross Blue-Shield of New York |
| NYE | New York (Northeastern) | Blue-Shield of Northeastern New York |
| NYF | New York (Northeastern) | Blue-Shield of Northeastern New York |
| NYG | New York | Empire Blue-Cross Blue-Shield of New York |
| NYH | New York | Empire Blue-Cross Blue-Shield of New York |
| NYI | New York | Empire Blue-Cross Blue-Shield of New York |
| NYJ | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| NYK | Texas | Blue-Cross Blue-Shield of Texas |
| NYL | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| NYM | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| NYN | New York | Empire Blue-Cross Blue-Shield of New York |
| NYO | – | Unallocated/Not Assigned |
| NYP | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| NYQ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NYR | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| NYS | – | Unallocated/Not Assigned |
| NYT | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| NYU | – | Unallocated/Not Assigned |
| NYV | – | Unallocated/Not Assigned |
| NYW | Illinois | Blue-Cross Blue-Shield of Illinois |
| NYX | Alabama | Blue-Cross Blue-Shield of Alabama |
| NYY | New York | Empire Blue-Cross Blue-Shield of New York |
| NYZ | Texas | Blue-Cross Blue-Shield of Texas |
| NZA | Illinois | Blue-Cross Blue-Shield of Illinois |
| NZB | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NZC | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NZD | – | Unallocated/Not Assigned |
| NZE | – | Unallocated/Not Assigned |
| NZF | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| NZG | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NZH | Michigan | Blue-Cross Blue-Shield of Michigan |
| NZI | Arizona | Blue-Cross Blue-Shield of Arizona |
| NZJ | – | Unallocated/Not Assigned |
| NZK | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| NZL | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NZM | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| NZN | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NZO | Michigan | Blue-Cross Blue-Shield of Michigan |
| NZP | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| NZQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| NZR | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| NZS | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| NZT | Florida | Florida-Blue |
| NZU | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| NZV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| NZW | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| NZX | – | Unallocated/Not Assigned |
| NZY | Illinois | Blue-Cross Blue-Shield of Illinois |
| NZZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
Some identification cards may not include an alpha prefix, which may indicate that the claim filing instructions for these type policies are different. We suggest that you verify claim filing instructions during the time eligibility information is obtained. If not, please follow the instructions on the back of the member’s ID card or contact the plan directly. Member eligibility can be obtained at 1 (800) 676-BLUE (2583). Once connected, you will then simply provide the alpha prefix and the operator will then route you to the member’s plan. Helpful Tips Related to the Alpha Prefix:
- Do not omit or randomly select an alpha prefix.
- Do not substitute another Blue Cross Blue Shield Member’s prefix.
- Include the alpha prefix and all alpha characters preceding the alpha prefix on all correspondence and claims submitted to Blue Cross Blue Shield of Texas.
- The alpha prefix is always three letters followed by the member’s ID number which can be from 6 up to 14 characters total.
- If possible, make copies of the member’s ID card (front and back) for your records.
- We recommend that you obtain a copy of the ID card any time there has been a coverage or policy change. If there are no changes, we suggest that you obtain card copies annually.
About us
Billing Executive – a Medical Billing and Coding Knowledge Base for Physicians, Office staff, Medical Billers and Coders, including resources pertaining to HCPCS Codes, CPT Codes, ICD-10 billing codes, Modifiers, POS Codes, Revenue Codes, Billing Errors, Denials and Rejections.
Read More:
BCBS Alpha Prefix List – MAA to MZZ
BCBS Alpha Prefix List – LAA to LZZ
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Common Medical Billing Terminologies # B & C
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