Today you will find The BCBS Alpha Prefix List from GAA to GZZ. 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 |
|---|---|---|
| GAA | – | Unallocated/Not Assigned |
| GAB | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GAC | Illinois | Blue-Cross Blue-Shield of Illinois |
| GAD | California | Blue-Shield of California |
| GAE | California | Anthem Blue-Cross |
| GAF | Illinois | Blue-Cross Blue-Shield of Illinois |
| GAG | Texas | Blue-Cross Blue-Shield of Texas |
| GAH | New York | Excellus Blue-Cross Blue-Shield of New York |
| GAI | – | Unallocated/Not Assigned |
| GAJ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GAK | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GAL | – | Unallocated/Not Assigned |
| GAM | Texas | Blue-Cross Blue-Shield of Texas |
| GAN | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GAO | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GAP | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GAQ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GAR | – | Unallocated/Not Assigned |
| GAS | Arkansas | Arkansas Blue-Cross Blue-Shield |
| GAT | Alabama | Blue-Cross Blue-Shield of Alabama |
| GAU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GAV | – | Unallocated/Not Assigned |
| GAW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GAX | – | Unallocated/Not Assigned |
| GAY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GAZ | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| GBA | Montana | Blue-Cross Blue-Shield of Montana |
| GBB | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GBC | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GBD | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| GBE | Michigan | Blue-Cross Blue-Shield of Michigan |
| GBF | Illinois | Blue-Cross Blue-Shield of Illinois |
| GBG | Michigan | Blue-Cross Blue-Shield of Michigan |
| GBH | Illinois | Blue-Cross Blue-Shield of Illinois |
| GBI | California | Blue-Shield of California |
| GBJ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GBK | – | Unallocated/Not Assigned |
| GBL | – | Unallocated/Not Assigned |
| GBM | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GBN | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GBO | – | Unallocated/Not Assigned |
| GBP | – | Unallocated/Not Assigned |
| GBQ | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| GBR | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| GBS | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GBT | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GBU | California | Anthem Blue-Cross |
| GBV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GBW | Illinois | Blue-Cross Blue-Shield of Illinois |
| GBX | Illinois | Blue-Cross Blue-Shield of Illinois |
| GBY | – | Unallocated/Not Assigned |
| GBZ | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| GCA | Alabama | Blue-Cross Blue-Shield of Alabama |
| GCB | – | Unallocated/Not Assigned |
| GCC | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GCD | California | Anthem Blue-Cross |
| GCE | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GCF | California | Anthem Blue-Cross |
| GCG | California | Blue-Shield of California |
| GCH | – | Unallocated/Not Assigned |
| GCI | California | Blue-Shield of California |
| GCJ | New York | Empire Blue-Cross Blue-Shield of New York |
| GCK | – | Unallocated/Not Assigned |
| GCL | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| GCM | – | Unallocated/Not Assigned |
| GCN | – | Unallocated/Not Assigned |
| GCO | – | Unallocated/Not Assigned |
| GCP | – | Unallocated/Not Assigned |
| GCQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GCR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GCS | – | Unallocated/Not Assigned |
| GCT | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GCU | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GCV | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| GCW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GCX | Alabama | Blue-Cross Blue-Shield of Alabama |
| GCY | – | Unallocated/Not Assigned |
| GCZ | – | Unallocated/Not Assigned |
| GDA | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| GDB | California | Anthem Blue-Cross |
| GDC | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| GDD | California | Anthem Blue-Cross |
| GDE | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| GDF | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| GDG | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GDH | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GDI | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| GDJ | – | Unallocated/Not Assigned |
| GDK | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| GDL | Michigan | Blue-Cross Blue-Shield of Michigan |
| GDM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GDN | Michigan | Blue-Cross Blue-Shield of Michigan |
| GDO | – | Unallocated/Not Assigned |
| GDP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GDQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GDR | – | Unallocated/Not Assigned |
| GDS | New York | Empire Blue-Cross Blue-Shield of New York |
| GDT | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GDU | Illinois | Blue-Cross Blue-Shield of Illinois |
| GDV | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GDW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GDX | – | Unallocated/Not Assigned |
| GDY | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| GDZ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GEA | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GEB | – | Unallocated/Not Assigned |
| GEC | Alabama | Blue-Cross Blue-Shield of Alabama |
| GED | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GEE | California | Blue-Shield of California |
| GEF | – | Unallocated/Not Assigned |
| GEG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GEH | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GEI | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| GEJ | Arkansas | Arkansas Blue-Cross Blue-Shield |
| GEK | – | Unallocated/Not Assigned |
| GEL | – | Unallocated/Not Assigned |
| GEM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GEN | Alabama | Blue-Cross Blue-Shield of Alabama |
| GEO | California | Anthem Blue-Cross |
| GEP | Alabama | Blue-Cross Blue-Shield of Alabama |
| GEQ | – | Unallocated/Not Assigned |
| GER | – | Unallocated/Not Assigned |
| GES | California | Anthem Blue-Cross |
| GET | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GEU | Illinois | Blue-Cross Blue-Shield of Illinois |
| GEV | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| GEW | – | Unallocated/Not Assigned |
| GEX | Alabama | Blue-Cross Blue-Shield of Alabama |
| GEY | – | Unallocated/Not Assigned |
| GEZ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GFA | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GFB | California | Anthem Blue-Cross |
| GFC | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| GFD BCBS Prefix | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| GFE | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GFF | California | Anthem Blue-Cross |
| GFG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GFH | – | Unallocated/Not Assigned |
| GFI | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GFJ | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| GFK | – | Unallocated/Not Assigned |
| GFL | Illinois | Blue-Cross Blue-Shield of Illinois |
| GFM BCBS Prefix | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GFN | – | Unallocated/Not Assigned |
| GFO | – | Unallocated/Not Assigned |
| GFP | Michigan | Blue-Cross Blue-Shield of Michigan |
| GFQ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GFR | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GFS | – | Unallocated/Not Assigned |
| GFT | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GFU | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| GFV | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GFW | – | Unallocated/Not Assigned |
| GFX | Texas | Blue-Cross Blue-Shield of Texas |
| GFY | – | Unallocated/Not Assigned |
| GFZ | New York | Empire Blue-Cross Blue-Shield of New York |
| GGA | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GGB | California | Blue-Shield of California |
| GGC | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GGD | California | Blue-Shield of California |
| GGE | – | Unallocated/Not Assigned |
| GGF | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GGG | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GGH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GGI | Arizona | Blue-Cross Blue-Shield of Arizona |
| GGJ | – | Unallocated/Not Assigned |
| GGK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GGL | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GGM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GGN | New York | Empire Blue-Cross Blue-Shield of New York |
| GGO | Michigan | Blue-Cross Blue-Shield of Michigan |
| GGP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GGQ | California | Anthem Blue-Cross |
| GGR | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| GGS BCBS Prefix | California | Anthem Blue-Cross |
| GGT | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GGU | – | Unallocated/Not Assigned |
| GGV | Arkansas | Arkansas Blue-Cross Blue-Shield |
| GGW | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GGX | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GGY | – | Unallocated/Not Assigned |
| GGZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| GHA | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| GHB | – | Unallocated/Not Assigned |
| GHC | – | Unallocated/Not Assigned |
| GHD | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| GHE | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| GHF | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GHG | Texas | Blue-Cross Blue-Shield of Texas |
| GHH | – | Unallocated/Not Assigned |
| GHI | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| GHJ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GHK | Florida | Florida-Blue |
| GHL | – | Unallocated/Not Assigned |
| GHM | Texas | Blue-Cross Blue-Shield of Texas |
| GHN | Illinois | Blue-Cross Blue-Shield of Illinois |
| GHO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GHP BCBS Prefix | Michigan | Blue-Cross Blue-Shield of Michigan |
| GHQ | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| GHR | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GHS | New York | Excellus Blue-Cross Blue-Shield of New York |
| GHT | – | Unallocated/Not Assigned |
| GHU | Arizona | Blue-Cross Blue-Shield of Arizona |
| GHV | Texas | Blue-Cross Blue-Shield of Texas |
| GHW | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GHX | Illinois | Blue-Cross Blue-Shield of Illinois |
| GHY | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GHZ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GIA | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GIB | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| GIC | California | Anthem Blue-Cross |
| GID | Alabama | Blue-Cross Blue-Shield of Alabama |
| GIE | California | Anthem Blue-Cross |
| GIF | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| GIG | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| GIH | Michigan | Blue-Cross Blue-Shield of Michigan |
| GII | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GIJ | Michigan | Blue-Cross Blue-Shield of Michigan |
| GIK | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| GIL | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GIM | Michigan | Blue-Cross Blue-Shield of Michigan |
| GIN | – | Unallocated/Not Assigned |
| GIO | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| GIP | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| GIQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| GIR | – | Unallocated/Not Assigned |
| GIS | Alabama | Blue-Cross Blue-Shield of Alabama |
| GIT | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GIU | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| GIV | – | Unallocated/Not Assigned |
| GIW | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| GIX | – | Unallocated/Not Assigned |
| GIY | – | Unallocated/Not Assigned |
| GIZ | – | Unallocated/Not Assigned |
| GJA | – | Unallocated/Not Assigned |
| GJB | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| GJC | Arkansas | Arkansas Blue-Cross Blue-Shield |
| GJD | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| GJE | – | Unallocated/Not Assigned |
| GJF | – | Unallocated/Not Assigned |
| GJG | – | Unallocated/Not Assigned |
| GJH | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| GJI | California | Anthem Blue-Cross |
| GJJ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GJK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GJL | – | Unallocated/Not Assigned |
| GJM | New York | Empire Blue-Cross Blue-Shield of New York |
| GJN | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GJO | California | Anthem Blue-Cross |
| GJP | Illinois | Blue-Cross Blue-Shield of Illinois |
| GJQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GJR | – | Unallocated/Not Assigned |
| GJS | New York | Empire Blue-Cross Blue-Shield of New York |
| GJT | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GJU | – | Unallocated/Not Assigned |
| GJV | Florida | Florida-Blue |
| GJW | – | Unallocated/Not Assigned |
| GJX | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| GJY | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GJZ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GKA | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GKB | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GKC | – | Unallocated/Not Assigned |
| GKD | Alabama | Blue-Cross Blue-Shield of Alabama |
| GKE | – | Unallocated/Not Assigned |
| GKF | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| GKG | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GKH | – | Unallocated/Not Assigned |
| GKI | Michigan | Blue-Cross Blue-Shield of Michigan |
| GKJ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GKK | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GKL | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GKM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GKN | Alabama | Blue-Cross Blue-Shield of Alabama |
| GKO | Michigan | Blue-Cross Blue-Shield of Michigan |
| GKP | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| GKQ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GKR | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GKS | – | Unallocated/Not Assigned |
| GKT | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GKU | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GKV | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| GKW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GKX | Illinois | Blue-Cross Blue-Shield of Illinois |
| GKY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GKZ | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| GLA | Florida | Florida-Blue |
| GLB | California | Anthem Blue-Cross |
| GLC | Michigan | Blue-Cross Blue-Shield of Michigan |
| GLD | – | Unallocated/Not Assigned |
| GLE | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GLF | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GLG | Michigan | Blue-Cross Blue-Shield of Michigan |
| GLH | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GLI | Idaho | Blue-Cross of Idaho |
| GLJ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GLK | Arizona | Blue-Cross Blue-Shield of Arizona |
| GLL | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GLM | – | Unallocated/Not Assigned |
| GLN | California | Anthem Blue-Cross |
| GLO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GLP | – | Unallocated/Not Assigned |
| GLQ | California | Blue-Shield of California |
| GLR | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GLS | California | Anthem Blue-Cross |
| GLT | Michigan | Blue-Cross Blue-Shield of Michigan |
| GLU | – | Unallocated/Not Assigned |
| GLV | California | Blue-Shield of California |
| GLW | Illinois | Blue-Cross Blue-Shield of Illinois |
| GLX | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GLY | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GLZ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GMA | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| GMB | Illinois | Blue-Cross Blue-Shield of Illinois |
| GMC | Michigan | Blue-Cross Blue-Shield of Michigan |
| GMD | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GME | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GMF | Idaho | Blue-Cross of Idaho |
| GMG | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GMH | Michigan | Blue-Cross Blue-Shield of Michigan |
| GMI | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GMJ | Michigan | Blue-Cross Blue-Shield of Michigan |
| GMK | Illinois | Blue-Cross Blue-Shield of Illinois |
| GML | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GMM | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| GMN | Florida | Florida-Blue |
| GMO | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GMP | Florida | Florida-Blue |
| GMQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| GMR | – | Unallocated/Not Assigned |
| GMS | Illinois | Blue-Cross Blue-Shield of Illinois |
| GMT | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| GMU | Michigan | Blue-Cross Blue-Shield of Michigan |
| GMV | Michigan | Blue-Cross Blue-Shield of Michigan |
| GMW | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| GMX | Idaho | Blue-Cross of Idaho |
| GMY | Idaho | Blue-Cross of Idaho |
| GMZ | Texas | Blue-Cross Blue-Shield of Texas |
| GNA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GNB | – | Unallocated/Not Assigned |
| GNC | Michigan | Blue-Cross Blue-Shield of Michigan |
| GND | – | Unallocated/Not Assigned |
| GNE | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| GNF | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| GNG | – | Unallocated/Not Assigned |
| GNH | – | Unallocated/Not Assigned |
| GNI | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| GNJ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GNK | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GNL | – | Unallocated/Not Assigned |
| GNM | – | Unallocated/Not Assigned |
| GNN | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GNO | Michigan | Blue-Cross Blue-Shield of Michigan |
| GNP | – | Unallocated/Not Assigned |
| GNQ | New York | Empire Blue-Cross Blue-Shield of New York |
| GNR | Illinois | Blue-Cross Blue-Shield of Illinois |
| GNS | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| GNT | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GNU | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GNV | Illinois | Blue-Cross Blue-Shield of Illinois |
| GNW | Florida | Florida-Blue |
| GNX | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GNY | Michigan | Blue-Cross Blue-Shield of Michigan |
| GNZ | – | Unallocated/Not Assigned |
| GOA | Michigan | Blue-Cross Blue-Shield of Michigan |
| GOB | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GOC | – | Unallocated/Not Assigned |
| GOD | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| GOE | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| GOF | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GOG | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GOH | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GOI | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GOJ | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| GOK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GOL | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GOM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GON | – | Unallocated/Not Assigned |
| GOO | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| GOP | Florida | Florida-Blue |
| GOQ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GOR | California | Anthem Blue-Cross |
| GOS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GOT | – | Unallocated/Not Assigned |
| GOU | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| GOV | – | Unallocated/Not Assigned |
| GOW | – | Unallocated/Not Assigned |
| GOX | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GOY | – | Unallocated/Not Assigned |
| GOZ | – | Unallocated/Not Assigned |
| GPA | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| GPB | Michigan | Blue-Cross Blue-Shield of Michigan |
| GPC | Florida | Florida-Blue |
| GPD | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GPE | California | Blue-Shield of California |
| GPF | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| GPG | California | Blue-Shield of California |
| GPH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GPI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GPJ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| GPK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GPL | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GPM | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GPN | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| GPO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GPP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GPQ | – | Unallocated/Not Assigned |
| GPR | New York | Empire Blue-Cross Blue-Shield of New York |
| GPS | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| GPT | Alabama | Blue-Cross Blue-Shield of Alabama |
| GPU | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GPV | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GPW | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| GPX | – | Unallocated/Not Assigned |
| GPY | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GPZ | Florida | Florida-Blue |
| GQA | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| GQB | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| GQC | California | Anthem Blue-Cross |
| GQD | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GQE | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| GQF | California | Anthem Blue-Cross |
| GQG | – | Unallocated/Not Assigned |
| GQH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GQI | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| GQJ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| GQK | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GQL | – | Unallocated/Not Assigned |
| GQM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GQN | – | Unallocated/Not Assigned |
| GQO | – | Unallocated/Not Assigned |
| GQP | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| GQQ | – | Unallocated/Not Assigned |
| GQR | – | Unallocated/Not Assigned |
| GQS | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| GQT | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| GQU | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GQV | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GQW | – | Unallocated/Not Assigned |
| GQX | New York (Northeastern) | Blue-Shield of Northeastern New York |
| GQY | – | Unallocated/Not Assigned |
| GQZ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GRA | California | Anthem Blue-Cross |
| GRB | California | Anthem Blue-Cross |
| GRC | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GRD | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GRE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GRF | Illinois | Blue-Cross Blue-Shield of Illinois |
| GRG | – | Unallocated/Not Assigned |
| GRH | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GRI | California | Blue-Shield of California |
| GRJ | Alabama | Blue-Cross Blue-Shield of Alabama |
| GRK | Alabama | Blue-Cross Blue-Shield of Alabama |
| GRL | – | Unallocated/Not Assigned |
| GRM | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GRN | – | Unallocated/Not Assigned |
| GRO | – | Unallocated/Not Assigned |
| GRP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GRQ | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| GRR | – | Unallocated/Not Assigned |
| GRS | – | Unallocated/Not Assigned |
| GRT | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GRU | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GRV | Michigan | Blue-Cross Blue-Shield of Michigan |
| GRW | Illinois | Blue-Cross Blue-Shield of Illinois |
| GRX | – | Unallocated/Not Assigned |
| GRY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GRZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GSA | Texas | Blue-Cross Blue-Shield of Texas |
| GSB | – | Unallocated/Not Assigned |
| GSC | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GSD | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| GSE | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| GSF | California | Blue-Shield of California |
| GSG | – | Unallocated/Not Assigned |
| GSH | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| GSI | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GSJ | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| GSK | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| GSL | Idaho | Blue-Cross of Idaho |
| GSM | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| GSN | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GSO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GSP | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GSQ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GSR | Texas | Blue-Cross Blue-Shield of Texas |
| GSS | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| GST | Texas | Blue-Cross Blue-Shield of Texas |
| GSU | California | Blue-Shield of California |
| GSV | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GSW | Alabama | Blue-Cross Blue-Shield of Alabama |
| GSX | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| GSY | Texas | Blue-Cross Blue-Shield of Texas |
| GSZ | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| GTA | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GTB | California | Anthem Blue-Cross |
| GTC | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GTD | Idaho | Blue-Cross of Idaho |
| GTE | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GTF | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GTG | – | Unallocated/Not Assigned |
| GTH | Illinois | Blue-Cross Blue-Shield of Illinois |
| GTI | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GTJ | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| GTK | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| GTL | – | Unallocated/Not Assigned |
| GTM | – | Unallocated/Not Assigned |
| GTN | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| GTO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GTP | Michigan | Blue-Cross Blue-Shield of Michigan |
| GTQ | – | Unallocated/Not Assigned |
| GTR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GTS | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GTT | – | Unallocated/Not Assigned |
| GTU | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| GTV | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GTW | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GTX | – | Unallocated/Not Assigned |
| GTY | – | Unallocated/Not Assigned |
| GTZ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GUA | Michigan | Blue-Cross Blue-Shield of Michigan |
| GUB | – | Unallocated/Not Assigned |
| GUC | Michigan | Blue-Cross Blue-Shield of Michigan |
| GUD | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GUE | – | Unallocated/Not Assigned |
| GUF | Illinois | Blue-Cross Blue-Shield of Illinois |
| GUG | Florida | Florida-Blue |
| GUH | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GUI | California | Anthem Blue-Cross |
| GUJ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| GUK | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GUL | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| GUM | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| GUN | – | Unallocated/Not Assigned |
| GUO | – | Unallocated/Not Assigned |
| GUP | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| GUQ | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| GUR | Michigan | Blue-Cross Blue-Shield of Michigan |
| GUS | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| GUT | – | Unallocated/Not Assigned |
| GUU | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| GUV | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| GUW | Illinois | Blue-Cross Blue-Shield of Illinois |
| GUX | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| GUY | Illinois | Blue-Cross Blue-Shield of Illinois |
| GUZ | Michigan | Blue-Cross Blue-Shield of Michigan |
| GVA | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GVB | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| GVC | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| GVD | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GVE | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GVF | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GVG | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GVH | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GVI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GVJ | Michigan | Blue-Cross Blue-Shield of Michigan |
| GVK | – | Unallocated/Not Assigned |
| GVL | Michigan | Blue-Cross Blue-Shield of Michigan |
| GVM | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GVN | California | Anthem Blue-Cross |
| GVO | – | Unallocated/Not Assigned |
| GVP | – | Unallocated/Not Assigned |
| GVQ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| GVR | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GVS | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GVT | – | Unallocated/Not Assigned |
| GVU | – | Unallocated/Not Assigned |
| GVV | – | Unallocated/Not Assigned |
| GVW | Alabama | Blue-Cross Blue-Shield of Alabama |
| GVX | Illinois | Blue-Cross Blue-Shield of Illinois |
| GVY | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| GVZ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GWA | California | Blue-Shield of California |
| GWB | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| GWC | Florida | Florida-Blue |
| GWD | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| GWE | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| GWF | – | Unallocated/Not Assigned |
| GWG | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GWH | California | Blue-Shield of California |
| GWI | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| GWJ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| GWK | Illinois | Blue-Cross Blue-Shield of Illinois |
| GWL | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GWM | Alabama | Blue-Cross Blue-Shield of Alabama |
| GWN | – | Unallocated/Not Assigned |
| GWO | Idaho | Blue-Cross of Idaho |
| GWP | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GWQ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GWR | Florida | Florida-Blue |
| GWS | California | Blue-Shield of California |
| GWT | – | Unallocated/Not Assigned |
| GWU | Idaho | Blue-Cross of Idaho |
| GWV | – | Unallocated/Not Assigned |
| GWW | – | Unallocated/Not Assigned |
| GWX | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GWY | Illinois | Blue-Cross Blue-Shield of Illinois |
| GWZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GXA | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| GXB | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GXC | Illinois | Blue-Cross Blue-Shield of Illinois |
| GXD | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GXE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GXF | – | Unallocated/Not Assigned |
| GXG | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GXH | Arkansas | Arkansas Blue-Cross Blue-Shield |
| GXI | – | Unallocated/Not Assigned |
| GXJ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GXK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GXL | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GXM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GXN | Michigan | Blue-Cross Blue-Shield of Michigan |
| GXO | – | Unallocated/Not Assigned |
| GXP | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| GXQ | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| GXR | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GXS | – | Unallocated/Not Assigned |
| GXT | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GXU | Michigan | Blue-Cross Blue-Shield of Michigan |
| GXV | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| GXW | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| GXX | Michigan | Blue-Cross Blue-Shield of Michigan |
| GXY | California | Blue-Shield of California |
| GXZ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GYA | – | Unallocated/Not Assigned |
| GYB | – | Unallocated/Not Assigned |
| GYC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GYD | – | Unallocated/Not Assigned |
| GYE | – | Unallocated/Not Assigned |
| GYF | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GYG | – | Unallocated/Not Assigned |
| GYH | Illinois | Blue-Cross Blue-Shield of Illinois |
| GYI | – | Unallocated/Not Assigned |
| GYJ | – | Unallocated/Not Assigned |
| GYK | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| GYL | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| GYM | California | Blue-Shield of California |
| GYN | – | Unallocated/Not Assigned |
| GYO | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GYP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GYQ | California | Anthem Blue-Cross |
| GYR | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| GYS | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GYT | Michigan | Blue-Cross Blue-Shield of Michigan |
| GYU | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| GYV | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| GYW | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| GYX | – | Unallocated/Not Assigned |
| GYY | Michigan | Blue-Cross Blue-Shield of Michigan |
| GYZ | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| GZA | – | Unallocated/Not Assigned |
| GZB | California | Anthem Blue-Cross |
| GZC | – | Unallocated/Not Assigned |
| GZD | Michigan | Blue-Cross Blue-Shield of Michigan |
| GZE | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| GZF | Alabama | Blue-Cross Blue-Shield of Alabama |
| GZG | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| GZH | – | Unallocated/Not Assigned |
| GZI | Florida | Florida-Blue |
| GZJ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GZK | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| GZL | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| GZM | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| GZN | – | Unallocated/Not Assigned |
| GZO | Michigan | Blue-Cross Blue-Shield of Michigan |
| GZP | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| GZQ | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| GZR | Illinois | Blue-Cross Blue-Shield of Illinois |
| GZS | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| GZT | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GZU | – | Unallocated/Not Assigned |
| GZV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| GZW | – | Unallocated/Not Assigned |
| GZX | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| GZY | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| GZZ | Oregon/Idaho/Utah/Washington | Regence 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 Numeric Prefix List (H2A to H9Z)
BCBS Alpha Prefix List – BAA to BZZ
Tips to increase patient payments by follow-up
Top 20 Critical Access Hospitals in the U.S
Leave a Reply