Today you will find The BCBS Alpha Prefix List from WAA to WZZ. 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 |
|---|---|---|
| WAA | Alabama | Blue-Cross Blue-Shield of Alabama |
| WAB | Illinois | Blue-Cross Blue-Shield of Illinois |
| WAC | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WAD | Florida | Florida-Blue |
| WAE | Texas | Blue-Cross Blue-Shield of Texas |
| WAF | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WAG | Illinois | Blue-Cross Blue-Shield of Illinois |
| WAH | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WAI | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WAJ | Florida | Florida-Blue |
| WAK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WAL | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WAM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WAN | Michigan | Blue-Cross Blue-Shield of Michigan |
| WAO | California | Blue-Shield of California |
| WAP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WAQ | Florida | Florida-Blue |
| WAR | – | Unallocated/Not Assigned |
| WAS | – | Unallocated/Not Assigned |
| WAT | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| WAU | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WAV | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WAW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WAX | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WAY | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| WAZ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WBA | Illinois | Blue-Cross Blue-Shield of Illinois |
| WBB | California | Blue-Shield of California |
| WBC | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| WBD | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| WBE | Idaho | Blue-Cross of Idaho |
| WBF | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WBG | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WBH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WBI | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WBJ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WBK | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| WBL | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| WBM | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WBN | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WBO | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| WBP | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WBQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| WBR | – | Unallocated/Not Assigned |
| WBS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WBT | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WBU | Michigan | Blue-Cross Blue-Shield of Michigan |
| WBV | Texas | Blue-Cross Blue-Shield of Texas |
| WBW | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WBX | New York (Northeastern) | Blue-Shield of Northeastern New York |
| WBY | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| WBZ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WCA | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| WCB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WCC | Illinois | Blue-Cross Blue-Shield of Illinois |
| WCD | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| WCE | California | Anthem Blue-Cross |
| WCF | – | Unallocated/Not Assigned |
| WCG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WCH | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WCI | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WCJ | – | Unallocated/Not Assigned |
| WCK | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WCL | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WCM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WCN | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WCO | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| WCP | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WCQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WCR | – | Unallocated/Not Assigned |
| WCS | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WCT | – | Unallocated/Not Assigned |
| WCU | California | Anthem Blue-Cross |
| WCV | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WCW | California | Blue-Shield of California |
| WCX | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WCY | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WCZ | Idaho | Blue-Cross of Idaho |
| WDA | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WDB | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| WDC | – | Unallocated/Not Assigned |
| WDD | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WDE | Alabama | Blue-Cross Blue-Shield of Alabama |
| WDF | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WDG | California | Blue-Shield of California |
| WDH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WDI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| WDJ | – | Unallocated/Not Assigned |
| WDK | – | Unallocated/Not Assigned |
| WDL | – | Unallocated/Not Assigned |
| WDM | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| WDN | – | Unallocated/Not Assigned |
| WDO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| WDP | – | Unallocated/Not Assigned |
| WDQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WDR | – | Unallocated/Not Assigned |
| WDS | Florida | Florida-Blue |
| WDT | – | Unallocated/Not Assigned |
| WDU | California | Blue-Shield of California |
| WDV | – | Unallocated/Not Assigned |
| WDW | – | Unallocated/Not Assigned |
| WDX | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| WDY | – | Unallocated/Not Assigned |
| WDZ | – | Unallocated/Not Assigned |
| WEA | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WEB | – | Unallocated/Not Assigned |
| WEC | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| WED | – | Unallocated/Not Assigned |
| WEE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WEF | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| WEG | Texas | Blue-Cross Blue-Shield of Texas |
| WEH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WEI | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WEJ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WEK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WEL | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WEM | California | Anthem Blue-Cross |
| WEN | – | Unallocated/Not Assigned |
| WEO | Arkansas | Blue-Advantage of Arkansas |
| WEP | California | Anthem Blue-Cross |
| WEQ | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| WER | – | Unallocated/Not Assigned |
| WES | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WET | California | Anthem Blue-Cross |
| WEU | – | Unallocated/Not Assigned |
| WEV | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| WEW | – | Unallocated/Not Assigned |
| WEX | – | Unallocated/Not Assigned |
| WEY | – | Unallocated/Not Assigned |
| WEZ | – | Unallocated/Not Assigned |
| WFA | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WFB | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WFC | Idaho | Blue-Cross of Idaho |
| WFD | California | Anthem Blue-Cross |
| WFE | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WFF | – | Unallocated/Not Assigned |
| WFG | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WFH | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| WFI | New York | Empire Blue-Cross Blue-Shield of New York |
| WFJ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WFK | – | Unallocated/Not Assigned |
| WFL | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WFM | New York | Excellus Blue-Cross Blue-Shield of New York |
| WFN | – | Unallocated/Not Assigned |
| WFO | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| WFP | – | Unallocated/Not Assigned |
| WFQ BCBS Prefix | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WFR | – | Unallocated/Not Assigned |
| WFS | New York | Empire Blue-Cross Blue-Shield of New York |
| WFT | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WFU | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| WFV | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WFW | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WFX | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WFY | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WFZ | New York | Excellus Blue-Cross Blue-Shield of New York |
| WGA | – | Unallocated/Not Assigned |
| WGB | Idaho | Blue-Cross of Idaho |
| WGC | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WGD | – | Unallocated/Not Assigned |
| WGE | Alabama | Blue-Cross Blue-Shield of Alabama |
| WGF | California | Anthem Blue-Cross |
| WGG | – | Unallocated/Not Assigned |
| WGH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WGI | Michigan | Blue-Cross Blue-Shield of Michigan |
| WGJ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WGK | – | Unallocated/Not Assigned |
| WGL | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WGM | – | Unallocated/Not Assigned |
| WGN | New York | Excellus Blue-Cross Blue-Shield of New York |
| WGO | California | Blue-Shield of California |
| WGP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WGQ | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| WGR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WGS | – | Unallocated/Not Assigned |
| WGT | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| WGU | – | Unallocated/Not Assigned |
| WGV | – | Unallocated/Not Assigned |
| WGW | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| WGX | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WGY | – | Unallocated/Not Assigned |
| WGZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| WHA | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| WHB | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WHC | Michigan | Blue-Cross Blue-Shield of Michigan |
| WHD | Michigan | Blue-Cross Blue-Shield of Michigan |
| WHE | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WHF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WHG | Idaho | Blue-Cross of Idaho |
| WHH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WHI | New York | Empire Blue-Cross Blue-Shield of New York |
| WHJ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WHK | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| WHL | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| WHM | Arkansas | Blue-Advantage of Arkansas |
| WHN | Michigan | Blue-Cross Blue-Shield of Michigan |
| WHO | Michigan | Blue-Cross Blue-Shield of Michigan |
| WHP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WHQ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WHR | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| WHS | Illinois | Blue-Cross Blue-Shield of Illinois |
| WHT | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WHU | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WHV | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| WHW | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| WHX | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WHY | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WHZ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WIA | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| WIB | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| WIC | – | Unallocated/Not Assigned |
| WID | Michigan | Blue-Cross Blue-Shield of Michigan |
| WIE | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WIF | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| WIG | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WIH | Alaska | Premera Blue-Cross of Alaska |
| WII | – | Unallocated/Not Assigned |
| WIJ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WIK | California | Blue-Shield of California |
| WIL | Alabama | Blue-Cross Blue-Shield of Alabama |
| WIM | California | Blue-Shield of California |
| WIN | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WIO | California | Blue-Shield of California |
| WIP | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WIQ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WIR | – | Unallocated/Not Assigned |
| WIS | – | Unallocated/Not Assigned |
| WIT | – | Unallocated/Not Assigned |
| WIU | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WIV | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| WIW | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WIX | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WIY | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| WIZ | – | Unallocated/Not Assigned |
| WJA | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WJB | – | Unallocated/Not Assigned |
| WJC | – | Unallocated/Not Assigned |
| WJD | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WJE | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WJF | Illinois | Blue-Cross Blue-Shield of Illinois |
| WJG | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WJH | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WJI | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WJJ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WJK | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| WJL | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| WJM | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WJN | – | Unallocated/Not Assigned |
| WJO | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WJP | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WJQ | – | Unallocated/Not Assigned |
| WJR | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| WJS | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WJT | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| WJU | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WJV | Texas | Blue-Cross Blue-Shield of Texas |
| WJW | Illinois | Blue-Cross Blue-Shield of Illinois |
| WJX | Illinois | Blue-Cross Blue-Shield of Illinois |
| WJY | Illinois | Blue-Cross Blue-Shield of Illinois |
| WJZ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WKA | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WKB | – | Unallocated/Not Assigned |
| WKC | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| WKD | Alabama | Blue-Cross Blue-Shield of Alabama |
| WKE | – | Unallocated/Not Assigned |
| WKF | California | Anthem Blue-Cross |
| WKG | – | Unallocated/Not Assigned |
| WKH | California | Anthem Blue-Cross |
| WKI | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WKJ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WKK | Illinois | Blue-Cross Blue-Shield of Illinois |
| WKL | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WKM | – | Unallocated/Not Assigned |
| WKN | – | Unallocated/Not Assigned |
| WKO | – | Unallocated/Not Assigned |
| WKP | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| WKQ | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| WKR | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WKS | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WKT | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WKU | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| WKV | – | Unallocated/Not Assigned |
| WKW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WKX | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WKY | Illinois | Blue-Cross Blue-Shield of Illinois |
| WKZ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WLA | – | Unallocated/Not Assigned |
| WLB | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| WLC | Texas | Blue-Cross Blue-Shield of Texas |
| WLD | – | Unallocated/Not Assigned |
| WLE | Michigan | Blue-Cross Blue-Shield of Michigan |
| WLF | Illinois | Blue-Cross Blue-Shield of Illinois |
| WLG | Alabama | Blue-Cross Blue-Shield of Alabama |
| WLH | California | Blue-Shield of California |
| WLI | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WLJ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WLK | Idaho | Blue-Cross of Idaho |
| WLL | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| WLM | Illinois | Blue-Cross Blue-Shield of Illinois |
| WLN | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| WLO | – | Unallocated/Not Assigned |
| WLP | California | Anthem Blue-Cross |
| WLQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WLR | New York | Empire Blue-Cross Blue-Shield of New York |
| WLS | Alabama | Blue-Cross Blue-Shield of Alabama |
| WLT | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WLU | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WLV | – | Unallocated/Not Assigned |
| WLW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WLX | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WLY | – | Unallocated/Not Assigned |
| WLZ | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| WMA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WMB | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| WMC | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| WMD | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| WME | Illinois | Blue-Cross Blue-Shield of Illinois |
| WMF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WMG | California | Anthem Blue-Cross |
| WMH | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| WMI | Michigan | Blue-Cross Blue-Shield of Michigan |
| WMJ | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WMK | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| WML | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WMM | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| WMN | Illinois | Blue-Cross Blue-Shield of Illinois |
| WMO | California | Anthem Blue-Cross |
| WMP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| WMQ | – | Unallocated/Not Assigned |
| WMR | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WMS | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WMT | California | Anthem Blue-Cross |
| WMU | Texas | Blue-Cross Blue-Shield of Texas |
| WMV | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| WMW BCBS Prefix | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WMX | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WMY | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WMZ | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WNA | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WNB | New York | Empire Blue-Cross Blue-Shield of New York |
| WNC | Alabama | Blue-Cross Blue-Shield of Alabama |
| WND | New York | Excellus Blue-Cross Blue-Shield of New York |
| WNE | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WNF | California | Anthem Blue-Cross |
| WNG | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WNH | New York | Empire Blue-Cross Blue-Shield of New York |
| WNI | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WNJ | – | Unallocated/Not Assigned |
| WNK | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WNL | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WNM | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| WNN | – | Unallocated/Not Assigned |
| WNO | – | Unallocated/Not Assigned |
| WNP | – | Unallocated/Not Assigned |
| WNQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| WNR | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WNS | Illinois | Blue-Cross Blue-Shield of Illinois |
| WNT | Illinois | Blue-Cross Blue-Shield of Illinois |
| WNU | – | Unallocated/Not Assigned |
| WNV | – | Unallocated/Not Assigned |
| WNW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WNX | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WNY | – | Unallocated/Not Assigned |
| WNZ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WOA | California | Anthem Blue-Cross |
| WOB | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WOC | – | Unallocated/Not Assigned |
| WOD | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| WOE | – | Unallocated/Not Assigned |
| WOF | Michigan | Blue-Cross Blue-Shield of Michigan |
| WOG | – | Unallocated/Not Assigned |
| WOH | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WOI | – | Unallocated/Not Assigned |
| WOJ | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WOK | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| WOL | New York (Northeastern) | Blue-Shield of Northeastern New York |
| WOM | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| WON | – | Unallocated/Not Assigned |
| WOO | Michigan | Blue-Cross Blue-Shield of Michigan |
| WOP | Michigan | Blue-Cross Blue-Shield of Michigan |
| WOQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| WOR | – | Unallocated/Not Assigned |
| WOS | – | Unallocated/Not Assigned |
| WOT | Michigan | Blue-Cross Blue-Shield of Michigan |
| WOU | – | Unallocated/Not Assigned |
| WOV | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WOW | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WOX | – | Unallocated/Not Assigned |
| WOY | Michigan | Blue-Cross Blue-Shield of Michigan |
| WOZ | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| WPA | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WPB | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| WPC | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| WPD | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WPE | – | Unallocated/Not Assigned |
| WPF | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| WPG | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| WPH | Alabama | Blue-Cross Blue-Shield of Alabama |
| WPI | Michigan | Blue-Cross Blue-Shield of Michigan |
| WPJ | – | Unallocated/Not Assigned |
| WPK | California | Anthem Blue-Cross |
| WPL | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WPM | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| WPN | – | Unallocated/Not Assigned |
| WPO | Michigan | Blue-Cross Blue-Shield of Michigan |
| WPP | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| WPQ | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| WPR | New York | Empire Blue-Cross Blue-Shield of New York |
| WPS | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WPT | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WPU | California | Anthem Blue-Cross |
| WPV | California | Anthem Blue-Cross |
| WPW | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WPX | California | Anthem Blue-Cross |
| WPY | California | Anthem Blue-Cross |
| WPZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WQA | – | Unallocated/Not Assigned |
| WQB | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| WQC | – | Unallocated/Not Assigned |
| WQD | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| WQE | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WQF | – | Unallocated/Not Assigned |
| WQG | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WQH | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WQI | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WQJ | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| WQK | – | Unallocated/Not Assigned |
| WQL | – | Unallocated/Not Assigned |
| WQM | – | Unallocated/Not Assigned |
| WQN | Illinois | Blue-Cross Blue-Shield of Illinois |
| WQO | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| WQP | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WQQ | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| WQR | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WQS | – | Unallocated/Not Assigned |
| WQT | – | Unallocated/Not Assigned |
| WQU | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WQV | – | Unallocated/Not Assigned |
| WQW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WQX | – | Unallocated/Not Assigned |
| WQY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WQZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WRA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WRB | – | Unallocated/Not Assigned |
| WRC | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| WRD | – | Unallocated/Not Assigned |
| WRE | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| WRF | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WRG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WRH | – | Unallocated/Not Assigned |
| WRI | Alabama | Blue-Cross Blue-Shield of Alabama |
| WRJ | – | Unallocated/Not Assigned |
| WRK | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| WRL | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WRM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WRN | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WRO | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WRP | – | Unallocated/Not Assigned |
| WRQ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WRR | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| WRS | California | Anthem Blue-Cross |
| WRT | – | Unallocated/Not Assigned |
| WRU | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WRV | Alabama | Blue-Cross Blue-Shield of Alabama |
| WRW | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| WRX | California | Anthem Blue-Cross |
| WRY BCBS Prefix | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WRZ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WSA | Arkansas | Blue-Advantage of Arkansas |
| WSB | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| WSC | Illinois | Blue-Cross Blue-Shield of Illinois |
| WSD | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WSE | – | Unallocated/Not Assigned |
| WSF | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WSG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WSH | – | Unallocated/Not Assigned |
| WSI | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| WSJ | California | Anthem Blue-Cross |
| WSK | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| WSL | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WSM | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WSN | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| WSO | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WSP | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WSQ | – | Unallocated/Not Assigned |
| WSR | – | Unallocated/Not Assigned |
| WSS | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| WST | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WSU | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WSV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WSW | Illinois | Blue-Cross Blue-Shield of Illinois |
| WSX | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| WSY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WSZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| WTA | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WTB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WTC | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WTD | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| WTE | Illinois | Blue-Cross Blue-Shield of Illinois |
| WTF | – | Unallocated/Not Assigned |
| WTG | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WTH | Illinois | Blue-Cross Blue-Shield of Illinois |
| WTI | – | Unallocated/Not Assigned |
| WTJ | – | Unallocated/Not Assigned |
| WTK | – | Unallocated/Not Assigned |
| WTL | – | Unallocated/Not Assigned |
| WTM | Illinois | Blue-Cross Blue-Shield of Illinois |
| WTN | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WTO | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WTP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WTQ | Alabama | Blue-Cross Blue-Shield of Alabama |
| WTR | Illinois | Blue-Cross Blue-Shield of Illinois |
| WTS | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WTT | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WTU | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WTV | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WTW | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| WTX | – | Unallocated/Not Assigned |
| WTY | – | Unallocated/Not Assigned |
| WTZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| WUA | Michigan | Blue-Cross Blue-Shield of Michigan |
| WUB | Texas | Blue-Cross Blue-Shield of Texas |
| WUC | New York | Empire Blue-Cross Blue-Shield of New York |
| WUD | – | Unallocated/Not Assigned |
| WUE | California | Blue-Shield of California |
| WUF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WUG | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| WUH | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WUI | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WUJ | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| WUK | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WUL | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WUM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WUN | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| WUO | California | Blue-Shield of California |
| WUP | – | Unallocated/Not Assigned |
| WUQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WUR | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| WUS | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| WUT | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WUU | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| WUV | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WUW | California | Anthem Blue-Cross |
| WUX | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| WUY | – | Unallocated/Not Assigned |
| WUZ | – | Unallocated/Not Assigned |
| WVA | Idaho | Blue-Cross of Idaho |
| WVB | – | Unallocated/Not Assigned |
| WVC | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WVD | Florida | Florida-Blue |
| WVE | Illinois | Blue-Cross Blue-Shield of Illinois |
| WVF | – | Unallocated/Not Assigned |
| WVG | – | Unallocated/Not Assigned |
| WVH | West Virginia | Highmark Blue-Cross Blue-Shield of West Virginia |
| WVI | California | Blue-Shield of California |
| WVJ | – | Unallocated/Not Assigned |
| WVK | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| WVL | Alabama | Blue-Cross Blue-Shield of Alabama |
| WVM | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WVN | – | Unallocated/Not Assigned |
| WVO | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WVP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WVQ | – | Unallocated/Not Assigned |
| WVR | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| WVS | California | Blue-Shield of California |
| WVT | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WVU | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| WVV | – | Unallocated/Not Assigned |
| WVW | – | Unallocated/Not Assigned |
| WVX | Idaho | Blue-Cross of Idaho |
| WVY | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| WVZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WWA | New York | Empire Blue-Cross Blue-Shield of New York |
| WWB | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WWC | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WWD | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WWE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WWF | Texas | Blue-Cross Blue-Shield of Texas |
| WWG | – | Unallocated/Not Assigned |
| WWH | – | Unallocated/Not Assigned |
| WWI | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WWJ | – | Unallocated/Not Assigned |
| WWK | – | Unallocated/Not Assigned |
| WWL | – | Unallocated/Not Assigned |
| WWM | Arkansas | Blue-Advantage of Arkansas |
| WWN | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| WWO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WWP | California | Anthem Blue-Cross |
| WWQ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WWR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WWS | California | Anthem Blue-Cross |
| WWT | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WWU | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WWV | Texas | Blue-Cross Blue-Shield of Texas |
| WWW | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WWX | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WWY | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| WWZ | Michigan | Blue-Cross Blue-Shield of Michigan |
| WXA | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WXB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WXC | Texas | Blue-Cross Blue-Shield of Texas |
| WXD | Texas | Blue-Cross Blue-Shield of Texas |
| WXE | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| WXF | Texas | Blue-Cross Blue-Shield of Texas |
| WXG | Texas | Blue-Cross Blue-Shield of Texas |
| WXH | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| WXI | – | Unallocated/Not Assigned |
| WXJ | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WXK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WXL | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| WXM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| WXN | Illinois | Blue-Cross Blue-Shield of Illinois |
| WXO | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| WXP | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| WXQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WXR | Texas | Blue-Cross Blue-Shield of Texas |
| WXS | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| WXT | – | Unallocated/Not Assigned |
| WXU | Texas | Blue-Cross Blue-Shield of Texas |
| WXV | – | Unallocated/Not Assigned |
| WXW | – | Unallocated/Not Assigned |
| WXX | Texas | Blue-Cross Blue-Shield of Texas |
| WXY | California | Anthem Blue-Cross |
| WXZ | Florida | Florida-Blue |
| WYA | – | Unallocated/Not Assigned |
| WYB | Illinois | Blue-Cross Blue-Shield of Illinois |
| WYC | California | Anthem Blue-Cross |
| WYD | – | Unallocated/Not Assigned |
| WYE | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| WYF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WYG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WYH | Illinois | Blue-Cross Blue-Shield of Illinois |
| WYI | Michigan | Blue-Cross Blue-Shield of Michigan |
| WYJ | – | Unallocated/Not Assigned |
| WYK | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| WYL | – | Unallocated/Not Assigned |
| WYM | Illinois | Blue-Cross Blue-Shield of Illinois |
| WYN | – | Unallocated/Not Assigned |
| WYO | Michigan | Blue-Cross Blue-Shield of Michigan |
| WYP | – | Unallocated/Not Assigned |
| WYQ | – | Unallocated/Not Assigned |
| WYR | Arkansas | Arkansas Blue-Cross Blue-Shield |
| WYS | Alabama | Blue-Cross Blue-Shield of Alabama |
| WYT | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WYU | Illinois | Blue-Cross Blue-Shield of Illinois |
| WYV | – | Unallocated/Not Assigned |
| WYW | Idaho | Blue-Cross of Idaho |
| WYX | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| WYY | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| WYZ | Florida | Florida-Blue |
| WZA | – | Unallocated/Not Assigned |
| WZB | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WZC | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WZD | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WZE | – | Unallocated/Not Assigned |
| WZF | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| WZG | Texas | Blue-Cross Blue-Shield of Texas |
| WZH | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| WZI | California | Blue-Shield of California |
| WZJ | – | Unallocated/Not Assigned |
| WZK | – | Unallocated/Not Assigned |
| WZL | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WZM | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WZN | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WZO | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WZP | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WZQ | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| WZR | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| WZS | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| WZT | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| WZU | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WZV | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| WZW | Florida | Florida-Blue |
| WZX | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| WZY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| WZZ BCBS Prefix | Minnesota | Blue-Cross Blue-Shield of Minnesota |
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 – VAA to VZZ
BCBS Alpha Prefix List – CAA to CZZ