| Alpha Prefix | BCBS Home Plan Name | BCBS Home Plan Website |
| WAA | BCBS of Alabama | https://www.bcbsal.org/web/index.html |
| WAB | BCBS of Illinois | https://www.bcbsil.com/ |
| WAD | BCBS of Florida | https://www.floridablue.com/ |
| WAE | BCBS of Texas | https://www.bcbstx.com/ |
| WAG | BCBS of Illinois | https://www.bcbsil.com/ |
| WAH | Premera Blue Cross | https://www.premera.com/visitor |
| WAI | Regence | https://www.regence.com/member/home |
| WAJ | BCBS of Florida | https://www.floridablue.com/ |
| WAK | Wellmark BCBS | https://www.wellmark.com/ |
| WAL | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WAM | Highmark BCBS | https://www.highmarkbcbs.com/home/ |
| WAP | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WAQ | BCBS of Florida | https://www.floridablue.com/ |
| WAR | Unknown Assignment | https://www.bcbs.com/ |
| WAS | Prefix Not in Use | https://www.bcbs.com/member-services |
| WAT | BCBS of Rhode Island | https://www.bcbsri.com/ |
| WAU | Wellmark BCBS | https://www.wellmark.com/ |
| WAV | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WAW | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WAZ | Premera Blue Cross | https://www.premera.com/visitor |
| WBC | Anthem BCBS of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| WBE | Blue Cross of Idaho | https://www.bcidaho.com/ |
| WBG | Regence | https://www.regence.com/member/home |
| WBH | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WBI | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WBJ | Premera Blue Cross | https://www.premera.com/visitor |
| WBK | BCBS of North Carolina | https://www.bluecrossnc.com/ |
| WBL | Anthem BCBS of Kentucky | https://www.anthem.com/individual-and-family/health-insurance/kentucky/ |
| WBM | Wellmark BCBS | https://www.wellmark.com/ |
| WBN | Anthem BCBS of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| WBO | BCBS of Oklahoma | https://www.bcbsok.com/ |
| WBP | Regence | https://www.regence.com/member/home |
| WBQ | BCBS of Michigan | https://www.bcbsm.com/ |
| WBR | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WBS | Wellmark BCBS | https://www.wellmark.com/ |
| WBU | BCBS of Michigan | https://www.bcbsm.com/ |
| WBW | Anthem BCBS of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| WBX | Blue Shield of Northeastern New York | https://www.bsneny.com/ |
| WBZ | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WCA | Prefix Not in Use | https://www.bcbs.com/member-services |
| WCB | Wellmark BCBS | https://www.wellmark.com/ |
| WCC | BCBS of Illinois | https://www.bcbsil.com/ |
| WCD | BCBS of Minnesota | https://www.bluecrossmn.com/ |
| WCE | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WCF | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WCG | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WCH | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WCI | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WCL | Premera Blue Cross | https://www.premera.com/visitor |
| WCM | Highmark BCBS | https://www.highmarkbcbs.com/home/ |
| WCN | Regence | https://www.regence.com/member/home |
| WCP | Regence | https://www.regence.com/member/home |
| WCQ | Wellmark BCBS | https://www.wellmark.com/ |
| WCR | Prefix Not in Use | https://www.bcbs.com/member-services |
| WCS | Prefix Not in Use | https://www.bcbs.com/member-services |
| WCT | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WCU | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WCV | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WCW | Blue Shield of California | https://blueshieldcaplans.com/ |
| WCX | Wellmark BCBS | https://www.wellmark.com/ |
| WCY | Regence | https://www.regence.com/member/home |
| WCZ | Blue Cross of Idaho | https://www.bcidaho.com/ |
| WDA | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WDD | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WDE | BCBS of Alabama | https://www.bcbsal.org/web/index.html |
| WDF | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WDG | Blue Shield of California | https://blueshieldcaplans.com/ |
| WDH | Wellmark BCBS | https://www.wellmark.com/ |
| WDI | Independence Blue Cross | https://www.ibx.com/index.jsp |
| WDK | Prefix Not in Use | https://www.bcbs.com/member-services |
| WDM | BCBS of Nebraska | https://www.nebraskablue.com/ |
| WDQ | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WDR | Regence | https://www.regence.com/member/home |
| WDS | BCBS of Florida | https://www.floridablue.com/ |
| WDT | Prefix Not in Use | https://www.bcbs.com/member-services |
| WDU | Blue Shield of California | https://blueshieldcaplans.com/ |
| WDX | Anthem BCBS of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| WDZ | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WEA | Anthem BCBS of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| WEB | Prefix Not in Use | https://www.bcbs.com/member-services |
| WEC | BCBS of Minnesota | https://www.bluecrossmn.com/ |
| WED | Blue Shield of California | https://blueshieldcaplans.com/ |
| WEE | Wellmark BCBS | https://www.wellmark.com/ |
| WEF | BCBS of Minnesota | https://www.bluecrossmn.com/ |
| WEG | BCBS of Texas | https://www.bcbstx.com/ |
| WEH | Wellmark BCBS | https://www.wellmark.com/ |
| WEI | Wellmark BCBS | https://www.wellmark.com/ |
| WEL | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WEO | Prefix Not in Use | https://www.bcbs.com/member-services |
| WEP | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WEQ | BCBS of Nebraska | https://www.nebraskablue.com/ |
| WER | Prefix Not in Use | https://www.bcbs.com/member-services |
| WES | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WET | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WEU | Prefix Not in Use | https://www.bcbs.com/member-services |
| WEV | BCBS of Western New York | https://www.bcbswny.com/ |
| WEW | Prefix Not in Use | https://www.bcbs.com/member-services |
| WEX | Regence | https://www.regence.com/member/home |
| WEZ | Prefix Not in Use | https://www.bcbs.com/member-services |
| WFA | Highmark BCBS | https://www.highmarkbcbs.com/home/ |
| WFB | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WFC | Blue Cross of Idaho | https://www.bcidaho.com/ |
| WFD | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WFE | Regence | https://www.regence.com/member/home |
| WFF | BCBS of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| WFH | Prefix Not in Use | https://www.bcbs.com/member-services |
| WFI | Empire BCBS of New York | https://www.empireblue.com/ |
| WFJ | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WFK | BCBS of Nebraska | https://www.nebraskablue.com/ |
| WFM | Excellus BCBS of New York | https://www.excellusbcbs.com/ |
| WFN | Prefix Not in Use | https://www.bcbs.com/member-services |
| WFO | BCBS of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| WFP | BCBS of Illinois | https://www.bcbsil.com/ |
| WFQ | Anthem BCBS of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| WFR | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WFS | Prefix Not in Use | https://www.bcbs.com/member-services |
| WFT | Premera Blue Cross | https://www.premera.com/visitor |
| WFU | BCBS of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| WFV | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WFW | Highmark BCBS | https://www.highmarkbcbs.com/home/ |
| WFX | Premera Blue Cross | https://www.premera.com/visitor |
| WFY | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WFZ | Excellus BCBS of New York | https://www.excellusbcbs.com/ |
| WGA | Premera Blue Cross | https://www.premera.com/visitor |
| WGB | Blue Cross of Idaho | https://www.bcidaho.com/ |
| WGC | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WGD | Wellmark BCBS | https://www.wellmark.com/ |
| WGF | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WGG | Prefix Not in Use | https://www.bcbs.com/member-services |
| WGI | BCBS of Michigan | https://www.bcbsm.com/ |
| WGJ | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WGM | Anthem BCBS of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| WGN | Excellus BCBS of New York | https://www.excellusbcbs.com/ |
| WGO | Blue Shield of California | https://blueshieldcaplans.com/ |
| WGR | Wellmark BCBS | https://www.wellmark.com/ |
| WGT | BCBS of Western New York | https://www.bcbswny.com/ |
| WGV | Prefix Not in Use | https://www.bcbs.com/member-services |
| WGW | Anthem BCBS of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| WGY | Prefix Not in Use | https://www.bcbs.com/member-services |
| WHA | Prefix Not in Use | https://www.bcbs.com/member-services |
| WHC | BCBS of Michigan | https://www.bcbsm.com/ |
| WHD | BCBS of Michigan | https://www.bcbsm.com/ |
| WHE | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WHF | Wellmark BCBS | https://www.wellmark.com/ |
| WHG | Blue Cross of Idaho | https://www.bcidaho.com/ |
| WHH | Wellmark BCBS | https://www.wellmark.com/ |
| WHI | Empire BCBS of New York | https://www.empireblue.com/ |
| WHK | Anthem BCBS of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| WHL | BCBS of Western New York | https://www.bcbswny.com/ |
| WHM | Prefix Not in Use | https://www.bcbs.com/member-services |
| WHN | BCBS of Michigan | https://www.bcbsm.com/ |
| WHO | BCBS of Michigan | https://www.bcbsm.com/ |
| WHP | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WHR | Independence Blue Cross | https://www.ibx.com/index.jsp |
| WHT | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WHU | Wellmark BCBS | https://www.wellmark.com/ |
| WHV | Independence Blue Cross | https://www.ibx.com/index.jsp |
| WHW | BCBS of Minnesota | https://www.bluecrossmn.com/ |
| WHX | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WIA | Anthem BCBS of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| WIB | BCBS of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| WIC | Capital Blue Cross | https://www.capbluecross.com/ |
| WID | BCBS of Michigan | https://www.bcbsm.com/ |
| WIE | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WIF | BCBS of North Carolina | https://www.bluecrossnc.com/ |
| WIG | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WIH | Premera Blue Cross | https://www.premera.com/visitor |
| WII | Prefix Not in Use | https://www.bcbs.com/member-services |
| WIJ | Anthem BCBS of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| WIK | Blue Shield of California | https://blueshieldcaplans.com/ |
| WIM | Blue Shield of California | https://blueshieldcaplans.com/ |
| WIN | Wellmark BCBS | https://www.wellmark.com/ |
| WIO | Blue Shield of California | https://blueshieldcaplans.com/ |
| WIQ | Prefix Not in Use | https://www.bcbs.com/member-services |
| WIR | BCBS of Michigan | https://www.bcbsm.com/ |
| WIS | Prefix Not in Use | https://www.bcbs.com/member-services |
| WIT | BCBS of Michigan | https://www.bcbsm.com/ |
| WIU | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WIV | Independence Blue Cross | https://www.ibx.com/index.jsp |
| WIW | Anthem BCBS of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| WIZ | Prefix Not in Use | https://www.bcbs.com/member-services |
| WJA | Premera Blue Cross | https://www.premera.com/visitor |
| WJB | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WJC | Prefix Not in Use | https://www.bcbs.com/member-services |
| WJE | Anthem BCBS of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| WJG | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WJH | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WJJ | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WJK | Capital Blue Cross | https://www.capbluecross.com/ |
| WJL | BCBS of Nebraska | https://www.nebraskablue.com/ |
| WJM | Wellmark BCBS | https://www.wellmark.com/ |
| WJN | Prefix Not in Use | https://www.bcbs.com/member-services |
| WJP | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WJR | Anthem BCBS of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| WJS | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WJU | Wellmark BCBS | https://www.wellmark.com/ |
| WJY | BCBS of Illinois | https://www.bcbsil.com/ |
| WJZ | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WKA | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WKB | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WKC | Capital Blue Cross | https://www.capbluecross.com/ |
| WKG | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WKH | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WKI | Regence | https://www.regence.com/member/home |
| WKJ | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WKK | BCBS of Illinois | https://www.bcbsil.com/ |
| WKL | Premera Blue Cross | https://www.premera.com/visitor |
| WKM | Prefix Not in Use | https://www.bcbs.com/member-services |
| WKN | Prefix Not in Use | https://www.bcbs.com/member-services |
| WKO | Prefix Not in Use | https://www.bcbs.com/member-services |
| WKP | Capital Blue Cross | https://www.capbluecross.com/ |
| WKQ | BCBS of North Carolina | https://www.bluecrossnc.com/ |
| WKS | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WKT | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WKU | BCBS of North Carolina | https://www.bluecrossnc.com/ |
| WKV | Anthem BCBS of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| WKW | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WKZ | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WLA | Prefix Not in Use | https://www.bcbs.com/member-services |
| WLB | BCBS of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| WLC | BCBS of Texas | https://www.bcbstx.com/ |
| WLD | Blue Shield of California | https://blueshieldcaplans.com/ |
| WLH | Blue Shield of California | https://blueshieldcaplans.com/ |
| WLJ | Premera Blue Cross | https://www.premera.com/visitor |
| WLK | Blue Cross of Idaho | https://www.bcidaho.com/ |
| WLL | BCBS of Illinois | https://www.bcbsil.com/ |
| WLM | BCBS of Illinois | https://www.bcbsil.com/ |
| WLN | Highmark BCBS | https://www.highmarkbcbsde.com/home/ |
| WLO | Unknown Assignment | https://www.bcbs.com/ |
| WLP | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WLQ | Wellmark BCBS | https://www.wellmark.com/ |
| WLR | Empire BCBS of New York | https://www.empireblue.com/ |
| WLS | BCBS of Alabama | https://www.bcbsal.org/web/index.html |
| WLT | Wellmark BCBS | https://www.wellmark.com/ |
| WLU | Anthem BCBS of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| WLV | BCBS of Alabama | https://www.bcbsal.org/web/index.html |
| WLX | Wellmark BCBS | https://www.wellmark.com/ |
| WLY | Wellmark BCBS | https://www.wellmark.com/ |
| WLZ | Highmark BCBS | https://www.highmarkbcbsde.com/home/ |
| WMA | Wellmark BCBS | https://www.wellmark.com/ |
| WMB | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WMC | BCBS of Minnesota | https://www.bluecrossmn.com/ |
| WMD | BCBS of Minnesota | https://www.bluecrossmn.com/ |
| WME | BCBS of Illinois | https://www.bcbsil.com/ |
| WMF | Wellmark BCBS | https://www.wellmark.com/ |
| WMG | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WMH | Highmark BCBS | https://www.highmarkbcbs.com/home/ |
| WMI | BCBS of Michigan | https://www.bcbsm.com/ |
| WMJ | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WML | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WMM | BCBS of Minnesota | https://www.bluecrossmn.com/ |
| WMP | BCBS of Minnesota | https://www.bluecrossmn.com/ |
| WMQ | Prefix Not in Use | https://www.bcbs.com/member-services |
| WMR | Anthem BCBS of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| WMS | Anthem BCBS of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| WMT | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WMU | BCBS of Texas | https://www.bcbstx.com/ |
| WMW | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WMX | Anthem BCBS of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| WMY | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WMZ | Anthem BCBS of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| WNA | Anthem BCBS of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| WNC | BCBS of Alabama | https://www.bcbsal.org/web/index.html |
| WND | Excellus BCBS of New York | https://www.excellusbcbs.com/ |
| WNE | Premera Blue Cross | https://www.premera.com/visitor |
| WNF | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WNG | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WNJ | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WNK | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WNM | BCBS of Western New York | https://www.bcbswny.com/ |
| WNN | Prefix Not in Use | https://www.bcbs.com/member-services |
| WNO | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WNP | Prefix Not in Use | https://www.bcbs.com/member-services |
| WNQ | BCBS of Michigan | https://www.bcbsm.com/ |
| WNR | Anthem BCBS of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| WNS | BCBS of Illinois | https://www.bcbsil.com/ |
| WNU | Prefix Not in Use | https://www.bcbs.com/member-services |
| WNY | BCBS of Illinois | https://www.bcbsil.com/ |
| WNZ | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WOA | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WOB | Premera Blue Cross | https://www.premera.com/visitor |
| WOC | Independence Blue Cross | https://www.ibx.com/index.jsp |
| WOD | Independence Blue Cross | https://www.ibx.com/index.jsp |
| WOE | Blue Shield of California | https://blueshieldcaplans.com/ |
| WOF | BCBS of Michigan | https://www.bcbsm.com/ |
| WOG | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WOH | Highmark BCBS | https://www.highmarkbcbs.com/home/ |
| WOJ | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WOK | BCBS of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| WOP | BCBS of Michigan | https://www.bcbsm.com/ |
| WOQ | BCBS of Michigan | https://www.bcbsm.com/ |
| WOR | Prefix Not in Use | https://www.bcbs.com/member-services |
| WOS | Prefix Not in Use | https://www.bcbs.com/member-services |
| WOT | BCBS of Michigan | https://www.bcbsm.com/ |
| WOU | Wellmark BCBS | https://www.wellmark.com/ |
| WOV | Anthem BCBS of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| WOW | Premera Blue Cross | https://www.premera.com/visitor |
| WOX | Prefix Not in Use | https://www.bcbs.com/member-services |
| WOY | BCBS of Michigan | https://www.bcbsm.com/ |
| WOZ | Anthem BCBS of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| WPB | Capital Blue Cross | https://www.capbluecross.com/ |
| WPC | Prefix Not in Use | https://www.bcbs.com/member-services |
| WPD | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WPE | Anthem BCBS of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| WPG | Prefix Not in Use | https://www.bcbs.com/member-services |
| WPI | BCBS of Michigan | https://www.bcbsm.com/ |
| WPJ | Prefix Not in Use | https://www.bcbs.com/member-services |
| WPK | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WPL | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WPM | Prefix Not in Use | https://www.bcbs.com/member-services |
| WPN | Prefix Not in Use | https://www.bcbs.com/member-services |
| WPO | BCBS of Michigan | https://www.bcbsm.com/ |
| WPP | Prefix Not in Use | https://www.bcbs.com/member-services |
| WPQ | Anthem BCBS of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| WPR | Empire BCBS of New York | https://www.empireblue.com/ |
| WPS | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WPT | Wellmark BCBS | https://www.wellmark.com/ |
| WPU | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WPV | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WPW | Anthem BCBS of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| WPX | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WPY | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WPZ | Wellmark BCBS | https://www.wellmark.com/ |
| WQB | Independence Blue Cross | https://www.ibx.com/index.jsp |
| WQC | Prefix Not in Use | https://www.bcbs.com/member-services |
| WQD | BCBS of Western New York | https://www.bcbswny.com/ |
| WQE | Highmark BCBS | https://www.highmarkblueshield.com/home/ |
| WQF | Anthem BCBS of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| WQJ | BCBS of Western New York | https://www.bcbswny.com/ |
| WQK | Prefix Not in Use | https://www.bcbs.com/member-services |
| WQM | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WQN | BCBS of Illinois | https://www.bcbsil.com/ |
| WQO | BCBS of Western New York | https://www.bcbswny.com/ |
| WQP | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WQQ | BCBS of Western New York | https://www.bcbswny.com/ |
| WQR | Highmark BCBS | https://www.highmarkbcbs.com/home/ |
| WQT | Prefix Not in Use | https://www.bcbs.com/member-services |
| WQU | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WQW | Wellmark BCBS | https://www.wellmark.com/ |
| WQX | Prefix Not in Use | https://www.bcbs.com/member-services |
| WQZ | Wellmark BCBS | https://www.wellmark.com/ |
| WRA | Wellmark BCBS | https://www.wellmark.com/ |
| WRB | Prefix Not in Use | https://www.bcbs.com/member-services |
| WRC | Horizon BCBS of New Jersey | https://www.horizonblue.com/ |
| WRD | Blue Shield of Northeastern New York | https://www.bsneny.com/ |
| WRE | Anthem BCBS of Kentucky | https://www.anthem.com/individual-and-family/health-insurance/kentucky/ |
| WRH | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WRI | BCBS of Alabama | https://www.bcbsal.org/web/index.html |
| WRJ | BCBS of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| WRK | BCBS of Rhode Island | https://www.bcbsri.com/ |
| WRL | Regence | https://www.regence.com/member/home |
| WRM | Highmark BCBS | https://www.highmarkbcbs.com/home/ |
| WRO | Anthem BCBS of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| WRR | Anthem BCBS of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| WRS | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WRT | Prefix Not in Use | https://www.bcbs.com/member-services |
| WRU | Wellmark BCBS | https://www.wellmark.com/ |
| WRV | BCBS of Alabama | https://www.bcbsal.org/web/index.html |
| WRW | BCBS of Rhode Island | https://www.bcbsri.com/ |
| WRX | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WSA | Prefix Not in Use | https://www.bcbs.com/member-services |
| WSB | BCBS of Minnesota | https://www.bluecrossmn.com/ |
| WSC | BCBS of Illinois | https://www.bcbsil.com/ |
| WSD | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WSE | Prefix Not in Use | https://www.bcbs.com/member-services |
| WSG | Prefix Not in Use | https://www.bcbs.com/member-services |
| WSH | Highmark BCBS | https://www.highmarkbcbswv.com/home/ |
| WSI | Prefix Not in Use | https://www.bcbs.com/member-services |
| WSJ | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WSK | Anthem BCBS of Nevada | https://www.anthem.com/individual-and-family/health-insurance/nevada/ |
| WSL | Wellmark BCBS | https://www.wellmark.com/ |
| WSM | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WSN | BCBS of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| WSP | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WSQ | Prefix Not in Use | https://www.bcbs.com/member-services |
| WSR | Prefix Not in Use | https://www.bcbs.com/member-services |
| WSS | BCBS of Western New York | https://www.bcbswny.com/ |
| WST | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WSU | Wellmark BCBS | https://www.wellmark.com/ |
| WSV | Wellmark BCBS | https://www.wellmark.com/ |
| WSW | BCBS of Illinois | https://www.bcbsil.com/ |
| WSX | BCBS of Minnesota | https://www.bluecrossmn.com/ |
| WSY | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WSZ | BCBS of Illinois | https://www.bcbsil.com/ |
| WTA | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WTB | Wellmark BCBS | https://www.wellmark.com/ |
| WTD | BCBS of Western New York | https://www.bcbswny.com/ |
| WTE | BCBS of Illinois | https://www.bcbsil.com/ |
| WTF | Prefix Not in Use | https://www.bcbs.com/member-services |
| WTG | Regence | https://www.regence.com/member/home |
| WTH | BCBS of Illinois | https://www.bcbsil.com/ |
| WTI | Prefix Not in Use | https://www.bcbs.com/member-services |
| WTK | Prefix Not in Use | https://www.bcbs.com/member-services |
| WTL | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WTM | BCBS of Illinois | https://www.bcbsil.com/ |
| WTN | Wellmark BCBS | https://www.wellmark.com/ |
| WTO | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WTP | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WTQ | BCBS of Alabama | https://www.bcbsal.org/web/index.html |
| WTR | BCBS of Illinois | https://www.bcbsil.com/ |
| WTU | Premera Blue Cross | https://www.premera.com/visitor |
| WTV | Premera Blue Cross | https://www.premera.com/visitor |
| WTX | Prefix Not in Use | https://www.bcbs.com/member-services |
| WTY | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WTZ | BCBS of Illinois | https://www.bcbsil.com/ |
| WUB | BCBS of Texas | https://www.bcbstx.com/ |
| WUC | Empire BCBS of New York | https://www.empireblue.com/ |
| WUF | Wellmark BCBS | https://www.wellmark.com/ |
| WUG | Horizon BCBS of New Jersey | https://www.horizonblue.com/ |
| WUI | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WUJ | BCBS of Rhode Island | https://www.bcbsri.com/ |
| WUK | Anthem BCBS of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| WUL | Anthem BCBS of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| WUM | Highmark BCBS | https://www.highmarkbcbs.com/home/ |
| WUN | BCBS of North Carolina | https://www.bluecrossnc.com/ |
| WUO | Blue Shield of California | https://blueshieldcaplans.com/ |
| WUP | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WUQ | Wellmark BCBS | https://www.wellmark.com/ |
| WUR | Horizon BCBS of New Jersey | https://www.horizonblue.com/ |
| WUS | Anthem BCBS of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| WUU | BCBS of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| WUW | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WUX | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WUY | Prefix Not in Use | https://www.bcbs.com/member-services |
| WUZ | Prefix Not in Use | https://www.bcbs.com/member-services |
| WVA | Blue Cross of Idaho | https://www.bcidaho.com/ |
| WVB | Prefix Not in Use | https://www.bcbs.com/member-services |
| WVC | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WVD | BCBS of Florida | https://www.floridablue.com/ |
| WVE | BCBS of Illinois | https://www.bcbsil.com/ |
| WVF | Prefix Not in Use | https://www.bcbs.com/member-services |
| WVG | BCBS of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| WVJ | Anthem BCBS of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| WVL | BCBS of Alabama | https://www.bcbsal.org/web/index.html |
| WVM | Prefix Not in Use | https://www.bcbs.com/member-services |
| WVN | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WVO | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WVP | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WVT | Highmark BCBS | https://www.highmarkbcbs.com/home/ |
| WVX | Prefix Not in Use | https://www.bcbs.com/member-services |
| WVY | Anthem BCBS of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| WVZ | Wellmark BCBS | https://www.wellmark.com/ |
| WWA | Empire BCBS of New York | https://www.empireblue.com/ |
| WWB | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WWC | BCBS of Massachusetts | https://home.bluecrossma.com/ |
| WWD | Regence | https://www.regence.com/member/home |
| WWF | BCBS of Texas | https://www.bcbstx.com/ |
| WWG | Prefix Not in Use | https://www.bcbs.com/member-services |
| WWH | Prefix Not in Use | https://www.bcbs.com/member-services |
| WWI | Premera Blue Cross | https://www.premera.com/visitor |
| WWJ | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WWK | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WWL | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WWM | Prefix Not in Use | https://www.bcbs.com/member-services |
| WWN | BCBS of Nebraska | https://www.nebraskablue.com/ |
| WWO | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WWP | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WWQ | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WWR | Wellmark BCBS | https://www.wellmark.com/ |
| WWS | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WWT | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WWW | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WWX | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WWZ | BCBS of Michigan | https://www.bcbsm.com/ |
| WXA | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WXG | BCBS of Texas | https://www.bcbstx.com/ |
| WXH | BCBS of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| WXK | Wellmark BCBS | https://www.wellmark.com/ |
| WXL | BCBS of Minnesota | https://www.bluecrossmn.com/ |
| WXM | Highmark BCBS | https://www.highmarkbcbs.com/home/ |
| WXN | BCBS of Illinois | https://www.bcbsil.com/ |
| WXO | Anthem BCBS of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| WXQ | Wellmark BCBS | https://www.wellmark.com/ |
| WXS | BCBS of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| WXT | Prefix Not in Use | https://www.bcbs.com/member-services |
| WXV | BCBS of Michigan | https://www.bcbsm.com/ |
| WXW | Prefix Not in Use | https://www.bcbs.com/member-services |
| WXY | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WXZ | BCBS of Florida | https://www.floridablue.com/ |
| WYB | BCBS of Illinois | https://www.bcbsil.com/ |
| WYC | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WYD | Prefix Not in Use | https://www.bcbs.com/member-services |
| WYE | Horizon BCBS of New Jersey | https://www.horizonblue.com/ |
| WYF | Wellmark BCBS | https://www.wellmark.com/ |
| WYI | BCBS of Michigan | https://www.bcbsm.com/ |
| WYJ | Prefix Not in Use | https://www.bcbs.com/member-services |
| WYK | Anthem BCBS of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| WYL | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| WYO | BCBS of Michigan | https://www.bcbsm.com/ |
| WYP | Prefix Not in Use | https://www.bcbs.com/member-services |
| WYQ | Prefix Not in Use | https://www.bcbs.com/member-services |
| WYR | BCBS of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| WYS | BCBS of Alabama | https://www.bcbsal.org/web/index.html |
| WYT | Carefirst BCBS of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| WYU | BCBS of Illinois | https://www.bcbsil.com/ |
| WYV | Prefix Not in Use | https://www.bcbs.com/member-services |
| WYY | BCBS of Oklahoma | https://www.bcbsok.com/ |
| WYZ | BCBS of Florida | https://www.floridablue.com/ |
| WZB | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WZC | Wellmark BCBS | https://www.wellmark.com/ |
| WZD | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WZE | Prefix Not in Use | https://www.bcbs.com/member-services |
| WZG | BCBS of Texas | https://www.bcbstx.com/ |
| WZH | Premera Blue Cross | https://www.premera.com/visitor |
| WZK | Prefix Not in Use | https://www.bcbs.com/member-services |
| WZL | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WZM | Anthem BCBS of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| WZN | Wellmark BCBS | https://www.wellmark.com/ |
| WZP | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WZQ | Regence | https://www.regence.com/member/home |
| WZR | Anthem BCBS of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| WZS | Anthem BCBS of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| WZT | Anthem BCBS of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| WZU | Anthem BCBS of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| WZW | BCBS of Florida | https://www.floridablue.com/ |
| WZX | Wellmark BCBS | https://www.wellmark.com/ |
| WZY | Anthem BCBS of Kentucky | https://www.anthem.com/individual-and-family/health-insurance/kentucky/ |
| WZZ | BCBS of Minnesota | https://www.bluecrossmn.com/ |
