Today you will find The BCBS Alpha Prefix List from UAA to UZZ. 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 |
|---|---|---|
| UAA | Michigan | Blue-Cross Blue-Shield of Michigan |
| UAB | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| UAC | Michigan | Blue-Cross Blue-Shield of Michigan |
| UAD | – | Unallocated/Not Assigned |
| UAE | California | Blue-Shield of California |
| UAF | California | Blue-Shield of California |
| UAG | Texas | Blue-Cross Blue-Shield of Texas |
| UAH | Alabama | Blue-Cross Blue-Shield of Alabama |
| UAI | – | Unallocated/Not Assigned |
| UAJ | – | Unallocated/Not Assigned |
| UAK | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| UAL BCBS Prefix | Illinois | Blue-Cross Blue-Shield of Illinois |
| UAM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| UAN | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| UAO | Michigan | Blue-Cross Blue-Shield of Michigan |
| UAP | – | Unallocated/Not Assigned |
| UAQ | California | Blue-Shield of California |
| UAR | Texas | Blue-Cross Blue-Shield of Texas |
| UAS | California | Anthem Blue-Cross |
| UAT | California | Anthem Blue-Cross |
| UAU | Michigan | Blue-Cross Blue-Shield of Michigan |
| UAV | California | Anthem Blue-Cross |
| UAW | Michigan | Blue-Cross Blue-Shield of Michigan |
| UAX | New York | Empire Blue-Cross Blue-Shield of New York |
| UAY | Michigan | Blue-Cross Blue-Shield of Michigan |
| UAZ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UBA | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| UBB | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| UBC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UBD | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UBE | – | Unallocated/Not Assigned |
| UBF | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UBG | Michigan | Blue-Cross Blue-Shield of Michigan |
| UBH | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| UBI | – | Unallocated/Not Assigned |
| UBJ | – | Unallocated/Not Assigned |
| UBK | – | Unallocated/Not Assigned |
| UBL | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UBM | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| UBN | – | Unallocated/Not Assigned |
| UBO | California | Blue-Shield of California |
| UBP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UBQ | – | Unallocated/Not Assigned |
| UBR | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| UBS | California | Blue-Shield of California |
| UBT | – | Unallocated/Not Assigned |
| UBU | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| UBV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UBW | – | Unallocated/Not Assigned |
| UBX | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UBY | – | Unallocated/Not Assigned |
| UBZ | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| UCA | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UCB | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UCC | Michigan | Blue-Cross Blue-Shield of Michigan |
| UCD | – | Unallocated/Not Assigned |
| UCE | Texas | Blue-Cross Blue-Shield of Texas |
| UCF | – | Unallocated/Not Assigned |
| UCG | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| UCH | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| UCI | Michigan | Blue-Cross Blue-Shield of Michigan |
| UCJ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| UCK | Michigan | Blue-Cross Blue-Shield of Michigan |
| UCL | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| UCM | – | Unallocated/Not Assigned |
| UCN | Alabama | Blue-Cross Blue-Shield of Alabama |
| UCO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UCP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UCQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UCR BCBS Prefix | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| UCS | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| UCT | – | Unallocated/Not Assigned |
| UCU | – | Unallocated/Not Assigned |
| UCV | – | Unallocated/Not Assigned |
| UCW | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| UCX | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UCY | – | Unallocated/Not Assigned |
| UCZ | – | Unallocated/Not Assigned |
| UDA | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UDB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UDC | Michigan | Blue-Cross Blue-Shield of Michigan |
| UDD | Michigan | Blue-Cross Blue-Shield of Michigan |
| UDE | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| UDF | – | Unallocated/Not Assigned |
| UDG | – | Unallocated/Not Assigned |
| UDH | Illinois | Blue-Cross Blue-Shield of Illinois |
| UDI | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| UDJ | – | Unallocated/Not Assigned |
| UDK | – | Unallocated/Not Assigned |
| UDL | Illinois | Blue-Cross Blue-Shield of Illinois |
| UDM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| UDN | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| UDO | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UDP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UDQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| UDR | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| UDS | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UDT | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| UDU | – | Unallocated/Not Assigned |
| UDV | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UDW | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| UDX | Michigan | Blue-Cross Blue-Shield of Michigan |
| UDY | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| UDZ | – | Unallocated/Not Assigned |
| UEA | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| UEB | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| UEC | California | Blue-Shield of California |
| UED | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UEE | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| UEF | California | Blue-Shield of California |
| UEG | New York | Empire Blue-Cross Blue-Shield of New York |
| UEH | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| UEI | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| UEJ | Illinois | Blue-Cross Blue-Shield of Illinois |
| UEK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UEL | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| UEM | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| UEN | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| UEO | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| UEP | – | Unallocated/Not Assigned |
| UEQ | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| UER | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UES | New York | Empire Blue-Cross Blue-Shield of New York |
| UET | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| UEU | – | Unallocated/Not Assigned |
| UEV | – | Unallocated/Not Assigned |
| UEW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| UEX | Texas | Blue-Cross Blue-Shield of Texas |
| UEY | – | Unallocated/Not Assigned |
| UEZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| UFA | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| UFB | Michigan | Blue-Cross Blue-Shield of Michigan |
| UFC | Illinois | Blue-Cross Blue-Shield of Illinois |
| UFD | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| UFE | – | Unallocated/Not Assigned |
| UFF | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UFG | Michigan | Blue-Cross Blue-Shield of Michigan |
| UFH | Michigan | Blue-Cross Blue-Shield of Michigan |
| UFI | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UFJ | Michigan | Blue-Cross Blue-Shield of Michigan |
| UFK | Michigan | Blue-Cross Blue-Shield of Michigan |
| UFL | Michigan | Blue-Cross Blue-Shield of Michigan |
| UFM | – | Unallocated/Not Assigned |
| UFN | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UFO | – | Unallocated/Not Assigned |
| UFP | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UFQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| UFR | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| UFS | Florida | Florida-Blue |
| UFT | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UFU | New York | Excellus Blue-Cross Blue-Shield of New York |
| UFV | Michigan | Blue-Cross Blue-Shield of Michigan |
| UFW | Illinois | Blue-Cross Blue-Shield of Illinois |
| UFX | Michigan | Blue-Cross Blue-Shield of Michigan |
| UFY | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UFZ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| UGA | Florida | Florida-Blue |
| UGB | California | Anthem Blue-Cross |
| UGC | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| UGD BCBS Prefix | Michigan | Blue-Cross Blue-Shield of Michigan |
| UGE | – | Unallocated/Not Assigned |
| UGF | Michigan | Blue-Cross Blue-Shield of Michigan |
| UGG BCBS Prefix | Michigan | Blue-Cross Blue-Shield of Michigan |
| UGH | Michigan | Blue-Cross Blue-Shield of Michigan |
| UGI | – | Unallocated/Not Assigned |
| UGJ | California | Anthem Blue-Cross |
| UGK | California | Anthem Blue-Cross |
| UGL | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| UGM | – | Unallocated/Not Assigned |
| UGN | Illinois | Blue-Cross Blue-Shield of Illinois |
| UGO | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| UGP | Michigan | Blue-Cross Blue-Shield of Michigan |
| UGQ | Idaho | Blue-Cross of Idaho |
| UGR | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| UGS | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| UGT | Alabama | Blue-Cross Blue-Shield of Alabama |
| UGU | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| UGV | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| UGW | California | Anthem Blue-Cross |
| UGX | Illinois | Blue-Cross Blue-Shield of Illinois |
| UGY | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| UGZ | Michigan | Blue-Cross Blue-Shield of Michigan |
| UHA | – | Unallocated/Not Assigned |
| UHB | – | Unallocated/Not Assigned |
| UHC | Michigan | Blue-Cross Blue-Shield of Michigan |
| UHD | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UHE | Arizona | Blue-Cross Blue-Shield of Arizona |
| UHF | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UHG | – | Unallocated/Not Assigned |
| UHH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UHI | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UHJ | Michigan | Blue-Cross Blue-Shield of Michigan |
| UHK | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UHL | Arizona | Blue-Cross Blue-Shield of Arizona |
| UHM | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| UHN | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UHO | Illinois | Blue-Cross Blue-Shield of Illinois |
| UHP | Alabama | Blue-Cross Blue-Shield of Alabama |
| UHQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UHR | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| UHS | Illinois | Blue-Cross Blue-Shield of Illinois |
| UHT | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UHU | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| UHV | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| UHW | Illinois | Blue-Cross Blue-Shield of Illinois |
| UHX | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| UHY | New York (Northeastern) | Blue-Shield of Northeastern New York |
| UHZ | New York (Northeastern) | Blue-Shield of Northeastern New York |
| UIA | – | Unallocated/Not Assigned |
| UIB | – | Unallocated/Not Assigned |
| UIC | Michigan | Blue-Cross Blue-Shield of Michigan |
| UID | Idaho | Blue-Cross of Idaho |
| UIE | Michigan | Blue-Cross Blue-Shield of Michigan |
| UIF | Florida | Florida-Blue |
| UIG | New York | Excellus Blue-Cross Blue-Shield of New York |
| UIH | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UII | Michigan | Blue-Cross Blue-Shield of Michigan |
| UIJ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| UIK | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| UIL | Michigan | Blue-Cross Blue-Shield of Michigan |
| UIM | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UIN | Michigan | Blue-Cross Blue-Shield of Michigan |
| UIO | Michigan | Blue-Cross Blue-Shield of Michigan |
| UIP | California | Anthem Blue-Cross |
| UIQ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UIR | Michigan | Blue-Cross Blue-Shield of Michigan |
| UIS | – | Unallocated/Not Assigned |
| UIT | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| UIU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UIV | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UIW | Michigan | Blue-Cross Blue-Shield of Michigan |
| UIX | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| UIY | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UIZ | – | Unallocated/Not Assigned |
| UJA | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| UJB | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| UJC | Illinois | Blue-Cross Blue-Shield of Illinois |
| UJD | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UJE | – | Unallocated/Not Assigned |
| UJF | Alabama | Blue-Cross Blue-Shield of Alabama |
| UJG | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| UJH | Illinois | Blue-Cross Blue-Shield of Illinois |
| UJI | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| UJJ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| UJK | – | Unallocated/Not Assigned |
| UJL | – | Unallocated/Not Assigned |
| UJM | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| UJN | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| UJO | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UJP | Illinois | Blue-Cross Blue-Shield of Illinois |
| UJQ | Texas | Blue-Cross Blue-Shield of Texas |
| UJR | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| UJS | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| UJT | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| UJU | – | Unallocated/Not Assigned |
| UJV | – | Unallocated/Not Assigned |
| UJW | – | Unallocated/Not Assigned |
| UJX | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UJY | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| UJZ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| UKA | – | Unallocated/Not Assigned |
| UKB | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| UKC | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| UKD | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| UKE | California | Anthem Blue-Cross |
| UKF | – | Unallocated/Not Assigned |
| UKG | – | Unallocated/Not Assigned |
| UKH | New York | Empire Blue-Cross Blue-Shield of New York |
| UKI | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| UKJ | New York | Empire Blue-Cross Blue-Shield of New York |
| UKK | – | Unallocated/Not Assigned |
| UKL | Texas | Blue-Cross Blue-Shield of Texas |
| UKM | – | Unallocated/Not Assigned |
| UKN | Idaho | Blue-Cross of Idaho |
| UKO | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UKP | – | Unallocated/Not Assigned |
| UKQ | Alaska | Premera Blue-Cross of Alaska |
| UKR | – | Unallocated/Not Assigned |
| UKS | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| UKT | California | Anthem Blue-Cross |
| UKU | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| UKV | – | Unallocated/Not Assigned |
| UKW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| UKX | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| UKY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UKZ | – | Unallocated/Not Assigned |
| ULA | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| ULB | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ULC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ULD | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| ULE | Illinois | Blue-Cross Blue-Shield of Illinois |
| ULF | Illinois | Blue-Cross Blue-Shield of Illinois |
| ULG | – | Unallocated/Not Assigned |
| ULH | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| ULI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| ULJ | Michigan | Blue-Cross Blue-Shield of Michigan |
| ULK | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| ULL | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ULM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ULN | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| ULO | Michigan | Blue-Cross Blue-Shield of Michigan |
| ULP | Alabama | Blue-Cross Blue-Shield of Alabama |
| ULQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ULR | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| ULS | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ULT | Illinois | Blue-Cross Blue-Shield of Illinois |
| ULU | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ULV | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ULW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| ULX | – | Unallocated/Not Assigned |
| ULY | Illinois | Blue-Cross Blue-Shield of Illinois |
| ULZ | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| UMA | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| UMB | Idaho | Blue-Cross of Idaho |
| UMC | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| UMD | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| UME | Florida | Florida-Blue |
| UMF | Illinois | Blue-Cross Blue-Shield of Illinois |
| UMG | California | Anthem Blue-Cross |
| UMH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UMI | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| UMJ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UMK | Michigan | Blue-Cross Blue-Shield of Michigan |
| UML | Michigan | Blue-Cross Blue-Shield of Michigan |
| UMM | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| UMN | Michigan | Blue-Cross Blue-Shield of Michigan |
| UMO | California | Anthem Blue-Cross |
| UMP | – | Unallocated/Not Assigned |
| UMQ | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| UMR | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UMS | Michigan | Blue-Cross Blue-Shield of Michigan |
| UMT | Michigan | Blue-Cross Blue-Shield of Michigan |
| UMU | Michigan | Blue-Cross Blue-Shield of Michigan |
| UMV | Michigan | Blue-Cross Blue-Shield of Michigan |
| UMW | Michigan | Blue-Cross Blue-Shield of Michigan |
| UMX | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UMY | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UMZ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UNA | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| UNB | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| UNC | Michigan | Blue-Cross Blue-Shield of Michigan |
| UND | – | Unallocated/Not Assigned |
| UNE | – | Unallocated/Not Assigned |
| UNF | Arizona | Blue-Cross Blue-Shield of Arizona |
| UNG | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| UNH | – | Unallocated/Not Assigned |
| UNI | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| UNJ | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| UNK | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| UNL | California | Anthem Blue-Cross |
| UNM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UNN | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UNO | – | Unallocated/Not Assigned |
| UNP | Michigan | Blue-Cross Blue-Shield of Michigan |
| UNQ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UNR | California | Anthem Blue-Cross |
| UNS | Vermont | Blue-Cross of Vermont |
| UNT | Vermont | Blue-Cross of Vermont |
| UNU | New York | Empire Blue-Cross Blue-Shield of New York |
| UNV | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UNW | Florida | Florida-Blue |
| UNX | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| UNY | – | Unallocated/Not Assigned |
| UNZ | New York | Empire Blue-Cross Blue-Shield of New York |
| UOA | – | Unallocated/Not Assigned |
| UOB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UOC | Illinois | Blue-Cross Blue-Shield of Illinois |
| UOD | – | Unallocated/Not Assigned |
| UOE | Illinois | Blue-Cross Blue-Shield of Illinois |
| UOF | Michigan | Blue-Cross Blue-Shield of Michigan |
| UOG | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| UOH | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UOI | Idaho | Blue-Cross of Idaho |
| UOJ | – | Unallocated/Not Assigned |
| UOK | – | Unallocated/Not Assigned |
| UOL | – | Unallocated/Not Assigned |
| UOM | Michigan | Blue-Cross Blue-Shield of Michigan |
| UON | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UOO | Michigan | Blue-Cross Blue-Shield of Michigan |
| UOP | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UOQ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| UOR | – | Unallocated/Not Assigned |
| UOS | – | Unallocated/Not Assigned |
| UOT | California | Blue-Shield of California |
| UOU | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| UOV | – | Unallocated/Not Assigned |
| UOW | – | Unallocated/Not Assigned |
| UOX | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UOY | Michigan | Blue-Cross Blue-Shield of Michigan |
| UOZ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| UPA | Illinois | Blue-Cross Blue-Shield of Illinois |
| UPB | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UPC | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UPD | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| UPE | – | Unallocated/Not Assigned |
| UPF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UPG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UPH | Illinois | Blue-Cross Blue-Shield of Illinois |
| UPI | Alabama | Blue-Cross Blue-Shield of Alabama |
| UPJ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UPK | – | Unallocated/Not Assigned |
| UPL | – | Unallocated/Not Assigned |
| UPM | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| UPN | – | Unallocated/Not Assigned |
| UPO | New York (Northeastern) | Blue-Shield of Northeastern New York |
| UPP | Texas | Blue-Cross Blue-Shield of Texas |
| UPQ | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| UPR | – | Unallocated/Not Assigned |
| UPS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UPT | Illinois | Blue-Cross Blue-Shield of Illinois |
| UPU | – | Unallocated/Not Assigned |
| UPV | – | Unallocated/Not Assigned |
| UPW | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| UPX | Texas | Blue-Cross Blue-Shield of Texas |
| UPY | Alabama | Blue-Cross Blue-Shield of Alabama |
| UPZ | California | Blue-Shield of California |
| UQA | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| UQB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UQC | – | Unallocated/Not Assigned |
| UQD | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UQE | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| UQF | – | Unallocated/Not Assigned |
| UQG | – | Unallocated/Not Assigned |
| UQH | – | Unallocated/Not Assigned |
| UQI | – | Unallocated/Not Assigned |
| UQJ | – | Unallocated/Not Assigned |
| UQK BCBS Prefix | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| UQL | – | Unallocated/Not Assigned |
| UQM | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| UQN | – | Unallocated/Not Assigned |
| UQO | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| UQP | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UQQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| UQR | – | Unallocated/Not Assigned |
| UQS | – | Unallocated/Not Assigned |
| UQT | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| UQU | Michigan | Blue-Cross Blue-Shield of Michigan |
| UQV | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UQW | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| UQX | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| UQY | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| UQZ | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| URA | Illinois | Blue-Cross Blue-Shield of Illinois |
| URB | – | Unallocated/Not Assigned |
| URC | – | Unallocated/Not Assigned |
| URD | – | Unallocated/Not Assigned |
| URE | Texas | Blue-Cross Blue-Shield of Texas |
| URF | – | Unallocated/Not Assigned |
| URG | – | Unallocated/Not Assigned |
| URH | – | Unallocated/Not Assigned |
| URI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| URJ | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| URK | Illinois | Blue-Cross Blue-Shield of Illinois |
| URL | New York | Excellus Blue-Cross Blue-Shield of New York |
| URM | – | Unallocated/Not Assigned |
| URN | Illinois | Blue-Cross Blue-Shield of Illinois |
| URO | Michigan | Blue-Cross Blue-Shield of Michigan |
| URP | Michigan | Blue-Cross Blue-Shield of Michigan |
| URQ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| URR | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| URS | California | Blue-Shield of California |
| URT | California | Blue-Shield of California |
| URU | Michigan | Blue-Cross Blue-Shield of Michigan |
| URV | Illinois | Blue-Cross Blue-Shield of Illinois |
| URW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| URX | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| URY | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| URZ | – | Unallocated/Not Assigned |
| USA | California | Anthem Blue-Cross |
| USB | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| USC | – | Unallocated/Not Assigned |
| USD | – | Unallocated/Not Assigned |
| USE | Texas | Blue-Cross Blue-Shield of Texas |
| USF | – | Unallocated/Not Assigned |
| USG | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| USH | Alabama | Blue-Cross Blue-Shield of Alabama |
| USI | – | Unallocated/Not Assigned |
| USJ | New York | Empire Blue-Cross Blue-Shield of New York |
| USK | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| USL | – | Unallocated/Not Assigned |
| USM | California | Blue-Shield of California |
| USN | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| USO | Florida | Florida-Blue |
| USP | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| USQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| USR | New York | Excellus Blue-Cross Blue-Shield of New York |
| USS | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| UST | Illinois | Blue-Cross Blue-Shield of Illinois |
| USU | New York | Empire Blue-Cross Blue-Shield of New York |
| USV | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| USW | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| USX | New York | Empire Blue-Cross Blue-Shield of New York |
| USY | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| USZ | – | Unallocated/Not Assigned |
| UTA | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UTB | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| UTC | Idaho | Blue-Cross of Idaho |
| UTD | Illinois | Blue-Cross Blue-Shield of Illinois |
| UTE | – | Unallocated/Not Assigned |
| UTF | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UTG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UTH | – | Unallocated/Not Assigned |
| UTI | – | Unallocated/Not Assigned |
| UTJ | – | Unallocated/Not Assigned |
| UTK | Arizona | Blue-Cross Blue-Shield of Arizona |
| UTL | Illinois | Blue-Cross Blue-Shield of Illinois |
| UTM | California | Anthem Blue-Cross |
| UTN | Illinois | Blue-Cross Blue-Shield of Illinois |
| UTO | California | Blue-Shield of California |
| UTP | – | Unallocated/Not Assigned |
| UTQ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UTR | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UTS BCBS Prefix | Texas | Blue-Cross Blue-Shield of Texas |
| UTT | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UTU | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| UTV | Illinois | Blue-Cross Blue-Shield of Illinois |
| UTW | – | Unallocated/Not Assigned |
| UTX | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| UTY | Texas | Blue-Cross Blue-Shield of Texas |
| UTZ | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| UUA | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| UUB | – | Unallocated/Not Assigned |
| UUC | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| UUD | – | Unallocated/Not Assigned |
| UUE | California | Blue-Shield of California |
| UUF | Illinois | Blue-Cross Blue-Shield of Illinois |
| UUG | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| UUH | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| UUI | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| UUJ | – | Unallocated/Not Assigned |
| UUK | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| UUL | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| UUM | – | Unallocated/Not Assigned |
| UUN | – | Unallocated/Not Assigned |
| UUO | Michigan | Blue-Cross Blue-Shield of Michigan |
| UUP | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| UUQ | – | Unallocated/Not Assigned |
| UUR | – | Unallocated/Not Assigned |
| UUS | California | Blue-Shield of California |
| UUT | – | Unallocated/Not Assigned |
| UUU | – | Unallocated/Not Assigned |
| UUV | – | Unallocated/Not Assigned |
| UUW | – | Unallocated/Not Assigned |
| UUX | Illinois | Blue-Cross Blue-Shield of Illinois |
| UUY | – | Unallocated/Not Assigned |
| UUZ | Michigan | Blue-Cross Blue-Shield of Michigan |
| UVA | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| UVB | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| UVC | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UVD | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| UVE | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UVF | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| UVG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UVH | – | Unallocated/Not Assigned |
| UVI | Michigan | Blue-Cross Blue-Shield of Michigan |
| UVJ | – | Unallocated/Not Assigned |
| UVK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UVL | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| UVM | – | Unallocated/Not Assigned |
| UVN | – | Unallocated/Not Assigned |
| UVO | – | Unallocated/Not Assigned |
| UVP | Illinois | Blue-Cross Blue-Shield of Illinois |
| UVQ | – | Unallocated/Not Assigned |
| UVR | – | Unallocated/Not Assigned |
| UVS | Illinois | Blue-Cross Blue-Shield of Illinois |
| UVT | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| UVU | Alabama | Blue-Cross Blue-Shield of Alabama |
| UVV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UVW | New York | Empire Blue-Cross Blue-Shield of New York |
| UVX | – | Unallocated/Not Assigned |
| UVY | California | Anthem Blue-Cross |
| UVZ | Texas | Blue-Cross Blue-Shield of Texas |
| UWA | Michigan | Blue-Cross Blue-Shield of Michigan |
| UWB | – | Unallocated/Not Assigned |
| UWC | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| UWD | California | Anthem Blue-Cross |
| UWE | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UWF | Michigan | Blue-Cross Blue-Shield of Michigan |
| UWG | Michigan | Blue-Cross Blue-Shield of Michigan |
| UWH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| UWI | – | Unallocated/Not Assigned |
| UWJ | – | Unallocated/Not Assigned |
| UWK | – | Unallocated/Not Assigned |
| UWL | – | Unallocated/Not Assigned |
| UWM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UWN | Illinois | Blue-Cross Blue-Shield of Illinois |
| UWO | – | Unallocated/Not Assigned |
| UWP | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| UWQ | New York | Empire Blue-Cross Blue-Shield of New York |
| UWR | – | Unallocated/Not Assigned |
| UWS | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| UWT | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| UWU | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| UWV | – | Unallocated/Not Assigned |
| UWW | Michigan | Blue-Cross Blue-Shield of Michigan |
| UWX | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| UWY | – | Unallocated/Not Assigned |
| UWZ | – | Unallocated/Not Assigned |
| UXA | – | Unallocated/Not Assigned |
| UXB | Alabama | Blue-Cross Blue-Shield of Alabama |
| UXC | California | Anthem Blue-Cross |
| UXD | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| UXE | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| UXF | California | Anthem Blue-Cross |
| UXG | Michigan | Blue-Cross Blue-Shield of Michigan |
| UXH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UXI | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| UXJ | Illinois | Blue-Cross Blue-Shield of Illinois |
| UXK | – | Unallocated/Not Assigned |
| UXL | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| UXM | Illinois | Blue-Cross Blue-Shield of Illinois |
| UXN | California | Blue-Shield of California |
| UXO | Michigan | Blue-Cross Blue-Shield of Michigan |
| UXP | – | Unallocated/Not Assigned |
| UXQ | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| UXR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UXS | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| UXT | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| UXU | Illinois | Blue-Cross Blue-Shield of Illinois |
| UXV | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| UXW | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| UXX | Michigan | Blue-Cross Blue-Shield of Michigan |
| UXY | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| UXZ | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| UYA | Illinois | Blue-Cross Blue-Shield of Illinois |
| UYB | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| UYC | New York | Empire Blue-Cross Blue-Shield of New York |
| UYD | – | Unallocated/Not Assigned |
| UYE | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| UYF | California | Anthem Blue-Cross |
| UYG | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| UYH | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| UYI | Michigan | Blue-Cross Blue-Shield of Michigan |
| UYJ | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| UYK | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| UYL | Illinois | Blue-Cross Blue-Shield of Illinois |
| UYM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UYN | – | Unallocated/Not Assigned |
| UYO | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| UYP | – | Unallocated/Not Assigned |
| UYQ | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| UYR | – | Unallocated/Not Assigned |
| UYS | – | Unallocated/Not Assigned |
| UYT | – | Unallocated/Not Assigned |
| UYU | Arizona | Blue-Cross Blue-Shield of Arizona |
| UYV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UYW | Michigan | Blue-Cross Blue-Shield of Michigan |
| UYX | – | Unallocated/Not Assigned |
| UYY | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| UYZ | Idaho | Blue-Cross of Idaho |
| UZA | – | Unallocated/Not Assigned |
| UZB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UZC | California | Anthem Blue-Cross |
| UZD | California | Blue-Shield of California |
| UZE | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| UZF | – | Unallocated/Not Assigned |
| UZG | Michigan | Blue-Cross Blue-Shield of Michigan |
| UZH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UZI | – | Unallocated/Not Assigned |
| UZJ | – | Unallocated/Not Assigned |
| UZK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| UZL | – | Unallocated/Not Assigned |
| UZM | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| UZN | Florida | Florida-Blue |
| UZO | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| UZP | California | Anthem Blue-Cross |
| UZQ | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| UZR | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| UZS | Texas | Blue-Cross Blue-Shield of Texas |
| UZT | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| UZU | – | Unallocated/Not Assigned |
| UZV | Michigan | Blue-Cross Blue-Shield of Michigan |
| UZW | Michigan | Blue-Cross Blue-Shield of Michigan |
| UZX | – | Unallocated/Not Assigned |
| UZY | Michigan | Blue-Cross Blue-Shield of Michigan |
| UZZ | Texas | Blue-Cross Blue-Shield of Texas |
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 – TAA to TZZ
BCBS Alpha Prefix List – MAA to MZZ