Insurance Identifier Lookup NAA – NZZ
| Prefix | Plan Name |
|---|---|
| N2D | Premera Blue Cross |
| N3T | Premera Blue Cross |
| N4S | Premera Blue Cross |
| N6P | Premera Blue Cross |
| N8P | Premera Blue Cross |
| NAA | Wellmark BCBS |
| NAB | BCBS of Arkansas Blue Advantage |
| NAC | BCBS of Alabama |
| NAD | BCBS of Tennessee |
| NAE | Wellmark BCBS |
| NAF | BCBS of Alabama |
| NAG | BCBS of Western New York |
| NAH | Anthem BCBS of Virginia |
| NAI | BCBS of Texas |
| NAJ | Anthem BCBS of Kentucky |
| NAK | Carefirst BCBS of Maryland |
| NAL | BCBS of Michigan |
| NAM | Blue Cross of Idaho |
| NAN | BCBS of Massachusetts |
| NAO | Blue Shield of California |
| NAP | Highmark BCBS |
| NAQ | Unassigned Prefix |
| NAR | Wellmark BCBS |
| NAS | Regence BCBS of Washington |
| NAT | Horizon BCBS of New Jersey |
| NAU | Excellus BCBS of New York |
| NAV | BCBS of Massachusetts |
| NAW | BCBS of Michigan |
| NAX | BCBS of Michigan |
| NAY | Premera Blue Cross |
| NAZ | Blue Shield of California |
| NBA | Wellmark BCBS |
| NBB | Regence Blue Cross Blue Shield of Oregon |
| NBC | BCBS of Delaware |
| NBD | Wellmark BCBS |
| NBE | BCBS of Arizona |
| NBF | Blue Shield of California |
| NBG | Anthem Blue Cross of California |
| NBH | Anthem BCBS of Wisconsin |
| NBI | BCBS of Michigan |
| NBJ | Unassigned Prefix |
| NBK | BCBS of Nebraska |
| NBL | BCBS of Tennessee |
| NBM | Wellmark BCBS |
| NBN | BCBS of Nebraska |
| NBO | Anthem BCBS of Colorado |
| NBP | Empire BCBS of New York |
| NBQ | BCBS of North Carolina |
| NBR | BCBS of Illinois |
| NBS | Unassigned Prefix |
| NBT | Excellus BCBS of New York |
| NBU | BCBS of Michigan |
| NBV | Unassigned Prefix |
| NBW | BCBS of Illinois |
| NBX | Anthem BCBS of Virginia |
| NBY | BCBS of Massachusetts |
| NBZ | Horizon BCBS of New Jersey |
| NCA | BCBS of Tennessee |
| NCB | BCBS of Illinois |
| NCC | Unassigned Prefix |
| NCD | BCBS of Delaware |
| NCE | BCBS of Michigan |
| NCF | Anthem Blue Cross of California |
| NCG | Wellmark BCBS |
| NCH | BCBS of Michigan |
| NCI | BCBS of Illinois |
| NCJ | BCBS of North Carolina |
| NCK | BCBS of North Carolina |
| NCL | Horizon BCBS of New Jersey |
| NCM | Empire BCBS of New York |
| NCN | BCBS of Illinois |
| NCO | Blue Shield of California |
| NCP | BCBS of North Carolina |
| NCQ | BCBS of Delaware |
| NCR | BCBS of North Carolina |
| NCS | BCBS of Arkansas Blue Advantage |
| NCT | Premera Blue Cross |
| NCU | Horizon BCBS of New Jersey |
| NCV | Blue Shield of California |
| NCW | Premera Blue Cross |
| NCX | BCBS of Illinois |
| NCY | BCBS of Illinois |
| NCZ | Premera Blue Cross |
| NDA | Unassigned Prefix |
| NDB | Anthem BCBS of Wisconsin |
| NDC | Unassigned Prefix |
| NDD | Horizon BCBS of New Jersey |
| NDE | BCBS of Michigan |
| NDF | Anthem BCBS of Indiana |
| NDG | Anthem Blue Cross of California |
| NDH | Unassigned Prefix |
| NDI | Carefirst BCBS of Maryland |
| NDJ | BCBS of Texas |
| NDK | Anthem BCBS of New Hampshire |
| NDL | Unassigned Prefix |
| NDM | Anthem BCBS of Wisconsin |
| NDN | Unassigned Prefix |
| NDO | Blue Shield of California |
| NDP | Carefirst Administrators |
| NDQ | Blue Shield of California |
| NDR | Highmark BCBS |
| NDS | Unassigned Prefix |
| NDT | Anthem Blue Cross of California |
| NDU | Anthem Blue Cross of California |
| NDV | Anthem Blue Cross of California |
| NDW | Unassigned Prefix |
| NDX | Unassigned Prefix |
| NDY | Wellmark BCBS |
| NDZ | Unassigned Prefix |
| NEA | BCBS of Illinois |
| NEB | Horizon BCBS of New Jersey |
| NEC | BCBS of Illinois |
| NED | BCBS of Nebraska |
| NEE | BCBS of Western New York |
| NEF | BCBS of Western New York |
| NEG | BCBS of Florida |
| NEH | Unassigned Prefix |
| NEI | BCBS of Illinois |
| NEJ | Unassigned Prefix |
| NEK | BCBS of Tennessee |
| NEL | BCBS of Alabama |
| NEM | BCBS of Delaware |
| NEN | BCBS of South Carolina |
| NEO | Unassigned Prefix |
| NEP | BCBS of Minnesota |
| NEQ | BCBS of Nebraska |
| NER | Regence BCBS |
| NES | BCBS of South Carolina |
| NET | Anthem BCBS of Connecticut |
| NEU | BCBS of Minnesota |
| NEV | Anthem BCBS of Kentucky |
| NEW | BCBS of Alabama |
| NEX | Regence BCBS of Oregon |
| NEY | Unassigned Prefix |
| NEZ | BCBS of Tennessee |
| NFA | BCBS of Illinois |
| NFB | BCBS of Western New York |
| NFC | Horizon BCBS of New Jersey |
| NFD | BCBS of Western New York |
| NFE | Horizon BCBS of New Jersey |
| NFF | Regence BCBS |
| NFG | BCBS of Illinois |
| NFH | Carefirst Administrators |
| NFI | BCBS of Vermont |
| NFJ | Excellus BCBS of New York |
| NFK | Premera Blue Cross |
| NFL | BCBS of Western New York |
| NFM | Highmark BCBS |
| NFN | Highmark BCBS |
| NFO | Wellmark BCBS |
| NFP | BCBS of Western New York |
| NFQ | BCBS of Western New York |
| NFR | Carefirst Administrators |
| NFS | BCBS of Florida |
| NFT | BCBS of Western New York |
| NFU | BCBS of North Carolina |
| NFV | Carefirst BCBS of Maryland |
| NFW | Horizon BCBS of New Jersey |
| NFX | Premera Blue Cross |
| NFY | Carefirst BCBS of Maryland |
| NFZ | BCBS of Massachusetts |
| NGA | Horizon BCBS of New Jersey |
| NGB | BCBS of South Carolina |
| NGC | BCBS of Illinois |
| NGD | BCBS of South Carolina |
| NGE | BCBS of Massachusetts |
| NGF | BCBS of Massachusetts |
| NGG | Anthem BCBS of Virginia |
| NGH | Anthem BCBS of New Hampshire |
| NGI | BCBS of Massachusetts |
| NGJ | Unassigned Prefix |
| NGK | BCBS of Massachusetts |
| NGL | Anthem BCBS of New Hampshire |
| NGM | Anthem Blue Cross of California |
| NGN | BCBS of Massachusetts |
| NGO | Anthem Blue Cross of California |
| NGP | Wellmark BCBS |
| NGQ | Carefirst BCBS of Maryland |
| NGR | BCBS of Michigan |
| NGS | Anthem BCBS of Virginia |
| NGT | Blue Shield of California |
| NGU | BCBS of Western New York |
| NGV | Anthem BCBS of Ohio |
| NGW | Blue Shield of California |
| NGX | BCBS of Illinois |
| NGY | BCBS of Massachusetts |
| NGZ | Wellmark BCBS |
| NHA | Anthem BCBS of New Hampshire |
| NHB | BCBS of Alabama |
| NHC | BCBS of Tennessee |
| NHD | Anthem BCBS of Ohio |
| NHE | Anthem Blue Cross of California |
| NHF | BCBS of Alabama |
| NHG | Capital Blue Cross |
| NHH | Blue Shield of California |
| NHI | BCBS of Massachusetts |
| NHJ | Highmark BCBS |
| NHK | Highmark BCBS |
| NHL | Horizon BCBS of New Jersey |
| NHM | BCBS of Massachusetts |
| NHN | Anthem BCBS of New Hampshire |
| NHO | Blue Shield of California |
| NHP | Anthem BCBS of New Hampshire |
| NHQ | Carefirst Administrators |
| NHR | BCBS of Minnesota |
| NHS | Carefirst BCBS of Maryland |
| NHT | BCBS of Michigan |
| NHU | Capital Blue Cross |
| NHV | Horizon BCBS of New Jersey |
| NHW | BCBS of Kansas City |
| NHX | Horizon BCBS of New Jersey |
| NHY | BCBS of Arizona |
| NHZ | Unassigned Prefix |
| NIA | Anthem BCBS of Wisconsin |
| NIB | Unassigned Prefix |
| NIC | Anthem Blue Cross of California |
| NID | Regence BCBS |
| NIE | Anthem BCBS of California |
| NIF | Unassigned Prefix |
| NIG | Unassigned Prefix |
| NIH | BCBS of Massachusetts |
| NII | Horizon BCBS of New Jersey |
| NIJ | Anthem BCBS of Ohio |
| NIK | Unassigned Prefix |
| NIL | Anthem Blue Cross of California |
| NIM | Wellmark BCBS |
| NIN | BCBS of Nebraska |
| NIO | Wellmark BCBS |
| NIP | Blue Shield of California |
| NIQ | Anthem BCBS of Ohio |
| NIR | Independence Blue Cross |
| NIS | Unassigned Prefix |
| NIT | BCBS of Georgia |
| NIU | BCBS of Florida |
| NIV | Anthem Blue Cross of California |
| NIW | Empire BCBS of New York |
| NIX | Empire BCBS of New York |
| NIY | BCBS of Kansas City |
| NIZ | Blue Shield of California |
| NJA | Anthem BCBS of Georgia |
| NJB | Highmark BCBS |
| NJC | Anthem BCBS of Ohio |
| NJD | Horizon BCBS of New Jersey |
| NJE | Horizon BCBS of New Jersey |
| NJF | BCBS of Illinois |
| NJG | BCBS of Texas |
| NJH | Horizon BCBS of New Jersey |
| NJI | Horizon BCBS of New Jersey |
| NJJ | Horizon BCBS of New Jersey |
| NJK | Anthem BCBS of Ohio |
| NJL | BCBS of Michigan |
| NJM | Anthem Blue Cross of California |
| NJN | Horizon BCBS of New Jersey |
| NJO | Horizon BCBS of New Jersey |
| NJP | Horizon BCBS of New Jersey |
| NJQ | BCBS of South Carolina |
| NJR | Horizon BCBS of New Jersey |
| NJS | Horizon BCBS of New Jersey |
| NJT | Horizon BCBS of New Jersey |
| NJU | BCBS of Illinois |
| NJV | BCBS of Michigan |
| NJW | Unassigned Prefix |
| NJX | Horizon BCBS of New Jersey |
| NJY | BCBS of Alabama |
| NJZ | Wellmark BCBS |
| NKA | BCBS of Minnesota |
| NKB | Anthem Blue Cross of California |
| NKC | Unassigned Prefix |
| NKD | Unassigned Prefix |
| NKE | Anthem BCBS of Ohio |
| NKF | BCBS of Alabama |
| NKG | Horizon BCBS of New Jersey |
| NKH | Horizon BCBS of New Jersey |
| NKI | Anthem BCBS of Ohio |
| NKJ | BCBS of Michigan |
| NKK | BCBS of Michigan |
| NKL | BCBS of Illinois |
| NKM | BCBS of Tennessee |
| NKN | Anthem Blue Cross of California |
| NKO | Horizon BCBS of New Jersey |
| NKP | Carefirst BCBS of Maryland |
| NKQ | BCBS of Michigan |
| NKR | Anthem BCBS of Indiana |
| NKS | BCBS of Michigan |
| NKT | BCBS of Illinois |
| NKU | Carefirst BCBS of Maryland |
| NKV | BCBS of Massachusetts |
| NKW | Anthem BCBS of Ohio |
| NKX | BCBS of Tennessee |
| NKY | BCBS of Michigan |
| NKZ | Unassigned Prefix |
| NLA | BCBS of Michigan |
| NLB | BCBS of Illinois |
| NLC | BCBS of Kansas City |
| NLD | Horizon BCBS of New Jersey |
| NLE | Horizon BCBS of New Jersey |
| NLF | Unassigned Prefix |
| NLG | Horizon BCBS of New Jersey |
| NLH | BCBS of Michigan |
| NLI | BCBS of Alabama |
| NLJ | Carefirst BCBS of Maryland |
| NLK | Anthem BCBS of Ohio |
| NLL | BCBS of Illinois |
| NLM | Highmark BCBS |
| NLN | Highmark BCBS |
| NLO | Carefirst BCBS of Maryland |
| NLP | Blue Shield of California |
| NLQ | Premera Blue Cross |
| NLR | BCBS of Texas |
| NLS | Horizon BCBS of New Jersey |
| NLT | BCBS of Texas |
| NLU | BCBS of Massachusetts |
| NLV | Carefirst BCBS of Maryland |
| NLW | BCBS of Illinois |
| NLX | Premera Blue Cross |
| NLY | Unassigned Prefix |
| NLZ | Premera Blue Cross |
| NMA | BCBS of South Carolina |
| NMB | Unassigned Prefix |
| NMC | Wellmark BCBS |
| NMD | BCBS of Kansas City |
| NME | BCBS of Georgia |
| NMF | BCBS of South Carolina |
| NMG | BCBS of South Carolina |
| NMH | Anthem BCBS of Ohio |
| NMI | Regence BCBS |
| NMJ | BCBS of New Mexico |
| NMK | BCBS of New Mexico |
| NML | BCBS of South Carolina |
| NMM | BCBS of New Mexico |
| NMN | BCBS of Minnesota |
| NMO | Horizon BCBS of New Jersey |
| NMP | BCBS of Illinois |
| NMQ | Unassigned Prefix |
| NMR | Horizon BCBS of New Jersey |
| NMS | Carefirst BCBS of Maryland |
| NMT | BCBS of Illinois |
| NMU | BCBS of Tennessee |
| NMV | Empire BCBS of New York |
| NMW | BCBS of Illinois |
| NMX | Anthem BCBS of Colorado |
| NMY | Anthem BCBS of New Hampshire |
| NMZ | Unassigned Prefix |
| NNA | BCBS of Tennessee |
| NNB | BCBS of Tennessee |
| NNC | Blue Cross Idaho |
| NND | BCBS of Massachusetts |
| NNE | BCBS of Massachusetts |
| NNF | BCBS of Western New York |
| NNG | BCBS of Arizona |
| NNH | Anthem BCBS of Virginia |
| NNI | Horizon BCBS of New Jersey |
| NNJ | BCBS of Arizona |
| NNK | Premera Blue Cross |
| NNL | Unassigned Prefix |
| NNM | Unassigned Prefix |
| NNN | BCBS of Illinois |
| NNO | BCBS of North Carolina |
| NNP | BCBS of Illinois |
| NNQ | Premera Blue Cross |
| NNR | Highmark BCBS |
| NNS | Anthem BCBS of Virginia |
| NNT | Premera Blue Cross |
| NNU | Blue Cross of Northeast Pennsylvania |
| NNV | Wellmark BCBS |
| NNW | BCBS of Montana |
| NNX | Highmark BCBS |
| NNY | Premera Blue Cross |
| NNZ | Anthem BCBS of Virginia |
| NOA | BCBS of North Dakota |
| NOB | Horizon BCBS of New Jersey |
| NOC | Horizon BCBS of New Jersey |
| NOD | Horizon BCBS of New Jersey |
| NOE | Anthem Blue Cross of California |
| NOF | BCBS of Michigan |
| NOG | BCBS of Michigan |
| NOH | Anthem BCBS of Colorado |
| NOI | Anthem BCBS of Ohio |
| NOJ | Unassigned Prefix |
| NOK | Unassigned Prefix |
| NOL | Independence Blue Cross |
| NOM | Unassigned Prefix |
| NON | BCBS of North Carolina |
| NOO | Wellmark BCBS |
| NOP | BCBS of North Dakota |
| NOQ | Blue Cross of Idaho |
| NOR | BCBS of Arizona |
| NOS | Anthem Blue Cross of California |
| NOT | Anthem BCBS of Ohio |
| NOU | Anthem Blue Cross of California |
| NOV | Horizon BCBS of New Jersey |
| NOW | Blue Shield of California |
| NOX | Unassigned Prefix |
| NOY | Blue Shield of California |
| NOZ | Blue Cross of Idaho |
| NPA | Carefirst Administrators |
| NPB | Regence Blue Cross Blue Shield of Oregon |
| NPC | BCBS of South Carolina |
| NPD | BCBS of Nebraska |
| NPE | BCBS of Minnesota |
| NPF | Carefirst BCBS of Maryland |
| NPG | Carefirst BCBS of Maryland |
| NPH | Horizon BCBS of New Jersey |
| NPI | BCBS of Michigan |
| NPJ | BCBS of Florida |
| NPK | BCBS of Michigan |
| NPL | Anthem Blue Cross of California |
| NPM | Carefirst BCBS of Maryland |
| NPN | Unassigned Prefix |
| NPO | Blue Shield of California |
| NPP | Independence Blue Cross |
| NPQ | Blue Cross of Idaho |
| NPR | BCBS of Illinois |
| NPS | Carefirst BCBS of Maryland |
| NPT | BCBS of Alabama |
| NPU | Empire BCBS of New York |
| NPV | Regence BCBS |
| NPW | Unassigned Prefix |
| NPX | BCBS of Rhose Island |
| NPY | Empire BCBS of New York |
| NPZ | Blue Cross of Idaho |
| NQA | BCBS of Massachusetts |
| NQB | Blue Cross of Idaho |
| NQC | Regence BCBS |
| NQD | BCBS of Western New York |
| NQE | Unassigned Prefix |
| NQF | Premera Blue Cross |
| NQG | BCBS of Michigan |
| NQH | BCBS of Illinois |
| NQI | BCBS of Michigan |
| NQJ | Unassigned Prefix |
| NQK | Blue Cross of Idaho |
| NQL | BCBS of Massachusetts |
| NQM | Anthem BCBS of Colorado |
| NQN | Premera Blue Cross |
| NQO | Unassigned Prefix |
| NQP | BCBS of Western New York |
| NQQ | BCBS of Minnesota |
| NQR | BCBS of Massachusetts |
| NQS | BCBS of Illinois |
| NQT | BCBS of Michigan |
| NQU | BCBS of Michigan |
| NQV | BCBS of Massachusetts |
| NQW | BCBS of Minnesota |
| NQX | BCBS of Massachusetts |
| NQY | Anthem Blue Cross of California |
| NQZ | Unassigned Prefix |
| NRA | BCBS of Minnesota |
| NRB | Premera Blue Cross |
| NRC | BCBS of Minnesota |
| NRD | Capital Blue Cross |
| NRE | Capital Blue Cross |
| NRF | BCBS of Illinois |
| NRG | BCBS of Illinois |
| NRH | Premera Blue Cross |
| NRI | BCBS of Nebraska |
| NRJ | Anthem Blue Cross of California |
| NRK | Anthem Blue Cross of California |
| NRL | Premera Blue Cross |
| NRM | Carefirst BCBS of Maryland |
| NRN | BCBS of Nebraska |
| NRO | BCBS of Georgia |
| NRP | Unassigned Prefix |
| NRQ | Horizon BCBS of New Jersey |
| NRR | Anthem Blue Cross of California |
| NRS | Premera Blue Cross |
| NRT | Anthem Blue Cross of California |
| NRU | Anthem BCBS of Ohio |
| NRV | Unassigned Prefix |
| NRW | Horizon BCBS of New Jersey |
| NRX | Anthem BCBS of Colorado |
| NRY | Unassigned Prefix |
| NRZ | Unassigned Prefix |
| NSA | Anthem Blue Cross of California |
| NSB | Blue Shield of California |
| NSC | Blue Shield of California |
| NSD | BCBS of Michigan |
| NSE | Blue Shield of California |
| NSF | Unassigned Prefix |
| NSG | Horizon BCBS of New Jersey |
| NSH | Carefirst BCBS of Maryland |
| NSI | Horizon BCBS of New Jersey |
| NSJ | Horizon BCBS of New Jersey |
| NSK | Horizon BCBS of New Jersey |
| NSL | Blue Shield of California |
| NSM | Wellmark BCBS |
| NSN | Blue Shield of California |
| NSO | Excellus BCBS of New York |
| NSP | Horizon BCBS of New Jersey |
| NSQ | Wellmark BCBS |
| NSR | Blue Cross of Idaho |
| NSS | BCBS of Michigan |
| NST | BCBS of Texas |
| NSU | Anthem BCBS of Ohio |
| NSV | Wellmark BCBS |
| NSW | Regence BCBS |
| NSX | Regence BCBS of Utah |
| NSY | Horizon BCBS of New Jersey |
| NSZ | BCBS of Tennessee |
| NTA | Anthem BCBS of New Hampshire |
| NTB | BCBS of Michigan |
| NTC | BCBS of Georgia |
| NTD | BCBS of Massachusetts |
| NTE | Premera Blue Cross |
| NTF | Premera Blue Cross |
| NTG | Unassigned Prefix |
| NTH | BCBS of Minnesota |
| NTI | Wellmark BCBS |
| NTJ | Blue Cross of Northeast Pennsylvania |
| NTK | BCBS of Texas |
| NTL | BCBS of Alabama |
| NTM | BCBS of Illinois |
| NTN | Anthem Blue Cross of California |
| NTO | Wellmark BCBS |
| NTP | Empire BCBS of New York |
| NTQ | Blue Cross of Northeast Pennsylvania |
| NTR | Horizon BCBS of New Jersey |
| NTS | Anthem BCBS of Ohio |
| NTT | Regence Blue Cross Blue Shield of Oregon |
| NTU | BCBS of Alabama |
| NTV | Blue Shield of California |
| NTW | Horizon BCBS of New Jersey |
| NTX | Blue Shield of California |
| NTY | BCBS of North Carolina |
| NTZ | BCBS of Massachusetts |
| NUA | Anthem BCBS of Ohio |
| NUB | Highmark BCBS of West Virginia |
| NUC | BCBS of Illinois |
| NUD | BCBS of Nebraska |
| NUE | BCBS of Kansas City |
| NUF | Horizon BCBS of New Jersey |
| NUG | Anthem BCBS of Ohio |
| NUH | Horizon BCBS of New Jersey |
| NUI | Regence BCBS |
| NUJ | Premera Blue Cross |
| NUK | BCBS of Texas |
| NUL | Unassigned Prefix |
| NUM | Carefirst BCBS of Maryland |
| NUN | Independence Blue Cross |
| NUO | BCBS of Michigan |
| NUP | BCBS of Massachusetts |
| NUQ | BCBS of Massachusetts |
| NUR | Anthem BCBS of Indiana |
| NUS | Blue Cross of Idaho |
| NUT | BCBS of South Carolina |
| NUU | BCBS of Illinois |
| NUV | BCBS of Illinois |
| NUW | Anthem Blue Cross of California |
| NUX | Capital Blue Cross |
| NUY | Anthem BCBS of Connecticut |
| NUZ | Regence Blue Shield of Idaho |
| NVA | Unassigned Prefix |
| NVB | BCBS of Massachusetts |
| NVC | Regence Blue Shield of Idaho |
| NVD | BCBS of Illinois |
| NVE | Wellmark BCBS |
| NVF | Carefirst BCBS of Maryland |
| NVG | BCBS of Michigan |
| NVH | Premera Blue Cross |
| NVI | BCBS of Minnesota |
| NVJ | Anthem BCBS of Wisconsin |
| NVK | BCBS of Illinois |
| NVL | BCBS of Texas |
| NVM | Wellmark BCBS |
| NVN | Unassigned Prefix |
| NVO | Independence Blue Cross |
| NVP | Horizon BCBS of New Jersey |
| NVQ | Independence Blue Cross |
| NVR | Anthem BCBS of Ohio |
| NVS | BCBS of Alabama |
| NVT | BCBS of Florida |
| NVU | Premera Blue Cross |
| NVV | BCBS of Illinois |
| NVW | Unassigned Prefix |
| NVX | BCBS of Illinois |
| NVY | Horizon BCBS of New Jersey |
| NVZ | BCBS of Florida |
| NWA | Unassigned Prefix |
| NWB | Premera Blue Cross |
| NWC | BCBS of South Carolina |
| NWD | Anthem BCBS of Colorado |
| NWE | Wellmark BCBS |
| NWF | Capital Blue Cross |
| NWG | Anthem BCBS of Georgia |
| NWH | Regence Blue Shield of Washington |
| NWI | BCBS of Massachusetts |
| NWJ | Unassigned Prefix |
| NWK | BCBS of Rhose Island |
| NWL | BCBS of South Carolina |
| NWM | Unassigned Prefix |
| NWN | BCBS of Georgia |
| NWO | Unassigned Prefix |
| NWP | BCBS of Minnesota |
| NWQ | Anthem BCBS of Georgia |
| NWR | Regence BCBS |
| NWS | Carefirst Administrators |
| NWT | Carefirst BCBS of Maryland |
| NWU | BCBS of Rhose Island |
| NWV | Premera Blue Cross |
| NWW | Wellmark BCBS |
| NWX | Blue Cross of Idaho |
| NWY | BCBS of Rhode Island |
| NWZ | Blue Cross of Idaho |
| NXA | BCBS of Western New York |
| NXB | Anthem BCBS of Connecticut |
| NXC | Anthem Blue Cross of California |
| NXD | BCBS of Nebraska |
| NXE | Anthem BCBS of Ohio |
| NXF | Unassigned Prefix |
| NXG | BCBS of Arizona |
| NXH | Blue Shield of California |
| NXI | Carefirst BCBS of Maryland |
| NXJ | Unassigned Prefix |
| NXK | Carefirst BCBS of Maryland |
| NXL | Premera Blue Cross |
| NXM | BCBS of Texas |
| NXN | Blue Cross of Idaho |
| NXO | Blue Shield of Northeastern New York |
| NXP | Blue Shield of California |
| NXQ | BCBS of Illinois |
| NXR | BCBS of North Carolina |
| NXS | Anthem BCBS of Ohio |
| NXT | Premera Blue Cross |
| NXU | Empire BCBS of New York |
| NXV | Anthem BCBS of Nevada |
| NXW | Premera Blue Cross |
| NXX | Premera Blue Cross |
| NXY | Unassigned Prefix |
| NXZ | BCBS of Georgia |
| NYA | Empire BCBS of New York |
| NYB | Empire BCBS of New York |
| NYC | Empire BCBS of New York |
| NYD | Empire BCBS of New York |
| NYE | Blue Shield of Northeastern New York |
| NYF | Blue Shield of Northeastern New York |
| NYG | Empire BCBS of New York |
| NYH | Empire BCBS of New York |
| NYI | Empire BCBS of New York |
| NYJ | BCBS of Tennessee |
| NYK | BCBS of Texas |
| NYL | Carefirst BCBS of Maryland |
| NYM | Horizon BCBS of New Jersey |
| NYN | Unassigned Prefix |
| NYO | Empire BCBS of New York |
| NYP | Anthem BCBS of Missouri |
| NYQ | BCBS of Georgia |
| NYR | BCBS of Tennessee |
| NYS | Unassigned Prefix |
| NYT | Independence Blue Cross |
| NYU | Carefirst BCBS of Maryland |
| NYV | Unassigned Prefix |
| NYW | BCBS of Illinois |
| NYX | BCBS of Alabama |
| NYY | Empire BCBS of New York |
| NYZ | BCBS of Texas |
| NZA | BCBS of Illinois |
| NZB | BCBS of South Carolina |
| NZC | BCBS of South Carolina |
| NZD | Unassigned Prefix |
| NZE | Unassigned Prefix |
| NZF | BCBS of Tennessee |
| NZG | BCBS of South Carolina |
| NZH | BCBS of Michigan |
| NZI | BCBS of Arizona |
| NZJ | Anthem Blue Cross of California |
| NZK | Independence Blue Cross |
| NZL | Wellmark BCBS |
| NZM | Anthem BCBS of Georgia |
| NZN | BCBS of South Carolina |
| NZO | BCBS of Michigan |
| NZP | BCBS of South Carolina |
| NZQ | BCBS of Michigan |
| NZR | Anthem BCBS of Virginia |
| NZS | Regence BCBS |
| NZT | BCBS of South Carolina |
| NZU | BCBS of Nebraska |
| NZV | Wellmark BCBS |
| NZW | BCBS of Tennessee |
| NZX | Horizon BCBS of New Jersey |
| NZY | BCBS of Illinois |
| NZZ | Wellmark BCBS |