| SAB | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SAC | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SAD | Blue Cross Blue Shield of North Carolina | https://www.bluecrossnc.com/ |
| SAE | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| SAF | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SAG | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SAH | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SAI | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SAJ | No Prefix Assigned | N/A |
| SAL | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SAM | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SAN | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| SAO | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SAP | No Prefix Assigned | N/A |
| SAQ | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SAR | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SAU | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SAV | No Prefix Assigned | N/A |
| SAW | Regence Blue Cross Blue Shield | https://www.regence.com/member/home |
| SAX | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| SBB | No Prefix Assigned | N/A |
| SBC | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SBF | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SBG | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SBI | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SBJ | Regence Blue Cross Blue Shield | https://www.regence.com/member/home |
| SBK | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SBL | No Prefix Assigned | N/A |
| SBM | No Prefix Assigned | N/A |
| SBN | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SBO | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| SBP | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| SBQ | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SBR | Highmark Blue Cross Blue Shield | https://www.highmarkblueshield.com/home/ |
| SBS | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SBT | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SBV | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SBW | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SBX | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SBY | Unknown Assignment | https://www.bcbs.com/ |
| SBZ | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| SCA | Regence Blue Cross Blue Shield | https://www.regence.com/member/home |
| SCB | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SCC | Blue Shield of California | https://blueshieldcaplans.com/ |
| SCD | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| SCE | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SCF | No Prefix Assigned | N/A |
| SCG | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SCH | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SCI | Regence Blue Cross Blue Shield | https://www.regence.com/member/home |
| SCJ | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SCK | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SCM | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| SCN | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SCO | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SCP | No Prefix Assigned | N/A |
| SCR | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SCT | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| SCU | Blue Cross of Idaho | https://www.bcidaho.com/ |
| SCV | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| SCW | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SCX | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SCY | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SCZ | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SDB | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SDC | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| SDD | Blue Shield of Northeastern New York | https://www.bsneny.com/ |
| SDE | Highmark Blue Cross Blue Shield | https://www.highmarkbcbsde.com/home/ |
| SDF | No Prefix Assigned | N/A |
| SDG | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SDH | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SDI | No Prefix Assigned | N/A |
| SDJ | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SDK | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SDL | No Prefix Assigned | N/A |
| SDM | No Prefix Assigned | N/A |
| SDN | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| SDO | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SDP | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| SDQ | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| SDR | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| SDS | Excellus Blue Cross Blue Shield of New York | https://www.excellusbcbs.com/ |
| SDT | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SDU | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SDV | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SDW | No Prefix Assigned | N/A |
| SDX | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SDY | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| SEA | Premera Blue Cross | https://www.premera.com/visitor |
| SEB | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SED | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SEE | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SEG | Anthem Blue Cross Blue Shield of Kentucky | https://www.anthem.com/individual-and-family/health-insurance/kentucky/ |
| SEH | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SEI | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| SEJ | Independence Blue Cross | https://www.ibx.com/index.jsp |
| SEK | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SEL | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SEM | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| SEO | Blue Shield of California | https://blueshieldcaplans.com/ |
| SEQ | No Prefix Assigned | N/A |
| SER | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| SET | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| SEU | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SEV | Blue Cross Blue Shield of North Carolina | https://www.bluecrossnc.com/ |
| SEW | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| SEX | No Prefix Assigned | N/A |
| SEY | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SEZ | Independence Blue Cross | https://www.ibx.com/index.jsp |
| SFC | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SFE | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| SFG | No Prefix Assigned | N/A |
| SFH | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SFI | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SFK | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SFL | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| SFM | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SFO | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SFQ | Blue Cross Blue Shield of Mississippi | https://www.bcbsms.com/ |
| SFR | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SFS | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| SFT | Blue Cross Blue Shield of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| SFU | Independence Blue Cross | https://www.ibx.com/index.jsp |
| SFV | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| SFW | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| SFY | No Prefix Assigned | N/A |
| SFZ | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SGA | No Prefix Assigned | N/A |
| SGB | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SGC | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SGD | No Prefix Assigned | N/A |
| SGE | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SGF | No Prefix Assigned | N/A |
| SGG | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SGH | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| SGI | Independence Blue Cross | https://www.ibx.com/index.jsp |
| SGJ | Blue Cross of Idaho | https://www.bcidaho.com/ |
| SGK | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SGM | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SGO | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SGP | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SGQ | No Prefix Assigned | N/A |
| SGR | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SGS | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SGU | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| SGV | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SGW | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SGX | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| SGY | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SGZ | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| SHA | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| SHB | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SHF | No Prefix Assigned | N/A |
| SHG | Capital Blue Cross | https://www.capbluecross.com/ |
| SHH | No Prefix Assigned | N/A |
| SHI | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SHJ | No Prefix Assigned | N/A |
| SHK | No Prefix Assigned | N/A |
| SHL | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SHM | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| SHN | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SHO | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SHP | No Prefix Assigned | N/A |
| SHQ | Independence Blue Cross | https://www.ibx.com/index.jsp |
| SHR | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SHS | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SHT | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| SHU | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SHV | Blue Cross Blue Shield of North Dakota | https://www.bcbsnd.com/ |
| SHX | No Prefix Assigned | N/A |
| SHY | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SIA | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SIB | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SIE | No Prefix Assigned | N/A |
| SIF | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SIG | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SIH | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| SII | Independence Blue Cross | https://www.ibx.com/index.jsp |
| SIM | Blue Cross Blue Shield of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| SIP | No Prefix Assigned | N/A |
| SIQ | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SIR | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SIS | Blue Shield of California | https://blueshieldcaplans.com/ |
| SIT | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SIU | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SIW | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SIX | No Prefix Assigned | N/A |
| SIY | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SIZ | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SJA | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SJB | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SJC | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| SJD | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SJE | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SJF | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SJH | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SJI | Blue Cross Blue Shield of Louisiana | https://www.bcbsla.com/ |
| SJJ | No Prefix Assigned | N/A |
| SJK | Blue Cross Blue Shield of Arkansas | http://www.arkansasbluecross.com/looking-for-insurance |
| SJL | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SJM | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SJN | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SJO | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SJP | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SJQ | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SJR | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SJS | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SJT | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SJW | No Prefix Assigned | N/A |
| SJX | No Prefix Assigned | N/A |
| SJY | Blue Shield of California | https://blueshieldcaplans.com/ |
| SJZ | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| SKA | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SKC | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SKE | No Prefix Assigned | N/A |
| SKF | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| SKG | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SKH | Independence Blue Cross | https://www.ibx.com/index.jsp |
| SKK | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SKL | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SKM | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| SKN | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| SKO | Premera Blue Cross | https://www.premera.com/visitor |
| SKP | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SKR | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SKV | No Prefix Assigned | N/A |
| SKW | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SKX | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| SKZ | No Prefix Assigned | N/A |
| SLA | No Prefix Assigned | N/A |
| SLB | Unknown Assignment | https://www.bcbs.com/ |
| SLC | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SLD | Excellus Blue Cross Blue Shield of New York | https://www.excellusbcbs.com/ |
| SLE | Anthem Blue Cross Blue Shield of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| SLF | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| SLG | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SLH | Premera Blue Cross | https://www.premera.com/visitor |
| SLI | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SLJ | No Prefix Assigned | N/A |
| SLL | Highmark Blue Cross Blue Shield | https://www.highmarkbcbsde.com/home/ |
| SLM | No Prefix Assigned | N/A |
| SLP | No Prefix Assigned | N/A |
| SLQ | No Prefix Assigned | N/A |
| SLR | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| SLS | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| SLT | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SLU | No Prefix Assigned | N/A |
| SLV | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| SLW | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| SLX | Capital Blue Cross | https://www.capbluecross.com/ |
| SLY | No Prefix Assigned | N/A |
| SLZ | Regence Blue Cross Blue Shield | https://www.regence.com/member/home |
| SMA | Blue Cross Blue Shield of Nebraska | https://www.nebraskablue.com/ |
| SMB | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SMD | Anthem Blue Cross Blue Shield of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| SME | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| SMF | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| SMG | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SMH | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| SMI | Highmark Blue Cross Blue Shield | https://www.highmarkbcbsde.com/home/ |
| SMK | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SML | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SMN | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| SMO | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SMQ | No Prefix Assigned | N/A |
| SMR | No Prefix Assigned | N/A |
| SMT | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| SMU | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SMV | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SMW | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SMX | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SMY | No Prefix Assigned | N/A |
| SMZ | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SNA | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SNB | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| SNC | No Prefix Assigned | N/A |
| SND | No Prefix Assigned | N/A |
| SNE | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SNF | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| SNH | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| SNI | No Prefix Assigned | N/A |
| SNJ | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| SNL | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SNM | No Prefix Assigned | N/A |
| SNN | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SNO | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SNP | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SNQ | Blue Cross Blue Shield of Rhode Island | https://www.bcbsri.com/ |
| SNR | No Prefix Assigned | N/A |
| SNT | No Prefix Assigned | N/A |
| SNU | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| SNV | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SNW | No Prefix Assigned | N/A |
| SNX | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SNY | No Prefix Assigned | N/A |
| SNZ | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SOA | Regence Blue Cross Blue Shield | https://www.regence.com/member/home |
| SOB | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SOD | Highmark Blue Cross Blue Shield | https://www.highmarkbcbsde.com/home/ |
| SOE | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SOF | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SOG | No Prefix Assigned | N/A |
| SOH | No Prefix Assigned | N/A |
| SOI | No Prefix Assigned | N/A |
| SOJ | Independence Blue Cross | https://www.ibx.com/index.jsp |
| SOL | Blue Cross Blue Shield of North Carolina | https://www.bluecrossnc.com/ |
| SOM | No Prefix Assigned | N/A |
| SOO | Blue Shield of California | https://blueshieldcaplans.com/ |
| SOR | Anthem Blue Cross Blue Shield of Kentucky | https://www.anthem.com/individual-and-family/health-insurance/kentucky/ |
| SOS | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| SOT | Blue Shield of California | https://blueshieldcaplans.com/ |
| SOU | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SOV | No Prefix Assigned | N/A |
| SOX | Blue Cross Blue Shield of Nebraska | https://www.nebraskablue.com/ |
| SOY | No Prefix Assigned | N/A |
| SOZ | No Prefix Assigned | N/A |
| SPA | No Prefix Assigned | N/A |
| SPC | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SPD | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SPE | No Prefix Assigned | N/A |
| SPG | Blue Shield of California | https://blueshieldcaplans.com/ |
| SPH | Blue Cross Blue Shield of Arizona | https://www.azblue.com/individualsandfamilies |
| SPI | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SPJ | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SPK | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| SPL | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SPM | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SPN | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| SPP | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SPQ | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SPR | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SPT | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SPV | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SPW | Blue Shield of California | https://blueshieldcaplans.com/ |
| SPX | No Prefix Assigned | N/A |
| SPY | No Prefix Assigned | N/A |
| SPZ | No Prefix Assigned | N/A |
| SQB | No Prefix Assigned | N/A |
| SQC | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SQD | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SQE | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SQF | No Prefix Assigned | N/A |
| SQG | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SQH | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SQJ | Anthem Blue Cross Blue Shield of Colorado | https://www.anthem.com/individual-and-family/health-insurance/colorado/ |
| SQK | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SQL | No Prefix Assigned | N/A |
| SQM | Blue Shield of California | https://blueshieldcaplans.com/ |
| SQN | Premera Blue Cross | https://www.premera.com/visitor |
| SQP | Regence Blue Cross Blue Shield | https://www.regence.com/member/home |
| SQQ | Blue Cross of Idaho | https://www.bcidaho.com/ |
| SQR | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SQS | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SQU | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SQV | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SQW | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| SQX | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SQY | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SQZ | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SRA | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| SRC | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SRD | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| SRF | Blue Cross Blue Shield of North Carolina | https://www.bluecrossnc.com/ |
| SRG | Blue Shield of California | https://blueshieldcaplans.com/ |
| SRH | Capital Blue Cross | https://www.capbluecross.com/ |
| SRI | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| SRJ | Regence Blue Cross Blue Shield | https://www.regence.com/member/home |
| SRK | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SRL | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| SRN | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SRO | Excellus Blue Cross Blue Shield of New York | https://www.excellusbcbs.com/ |
| SRP | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SRQ | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SRR | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SRS | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SRT | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| SRU | Premera Blue Cross | https://www.premera.com/visitor |
| SRW | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SRX | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SRY | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SSA | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SSC | No Prefix Assigned | N/A |
| SSD | Blue Shield of California | https://blueshieldcaplans.com/ |
| SSE | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SSF | Anthem Blue Cross Blue Shield of Missouri | https://www.anthem.com/individual-and-family/health-insurance/missouri/ |
| SSG | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SSH | No Prefix Assigned | N/A |
| SSI | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SSJ | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SSK | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| SSL | No Prefix Assigned | N/A |
| SSM | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SSO | Blue Shield of California | https://blueshieldcaplans.com/ |
| SSP | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SSQ | Blue Cross of Idaho | https://www.bcidaho.com/ |
| SSR | No Prefix Assigned | N/A |
| SSS | Regence Blue Cross Blue Shield | https://www.regence.com/member/home |
| SST | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SSU | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SSW | Blue Cross Blue Shield of Montana | https://www.bcbsmt.com/ |
| SSX | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| SSY | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SSZ | Premera Blue Cross | https://www.premera.com/visitor |
| STA | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| STB | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| STC | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| STD | Capital Blue Cross | https://www.capbluecross.com/ |
| STE | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| STF | Anthem Blue Cross Blue Shield of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| STG | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| STH | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| STI | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| STL | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| STM | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| STN | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| STO | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| STP | Blue Cross Blue Shield of Texas | https://www.bcbstx.com/ |
| STQ | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| STR | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| STT | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| STV | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| STY | Anthem Blue Cross Blue Shield of Indiana | https://www.anthem.com/individual-and-family/health-insurance/indiana/ |
| STZ | Blue Cross Blue Shield of Florida | https://www.floridablue.com/ |
| SUA | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SUB | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| SUD | Excellus Blue Cross Blue Shield of New York | https://www.excellusbcbs.com/ |
| SUE | No Prefix Assigned | N/A |
| SUF | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| SUG | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SUI | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SUJ | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SUK | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SUL | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SUM | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SUO | No Prefix Assigned | N/A |
| SUP | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SUQ | No Prefix Assigned | N/A |
| SUR | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SUT | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SUV | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SUW | Blue Cross Blue Shield of Western New York | https://www.bcbswny.com/ |
| SUY | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| SUZ | Horizon Blue Cross Blue Shield of New Jersey | https://www.horizonblue.com/ |
| SVA | No Prefix Assigned | N/A |
| SVB | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SVC | Premera Blue Cross | https://www.premera.com/visitor |
| SVF | Capital Blue Cross | https://www.capbluecross.com/ |
| SVG | Unknown Assignment | https://www.bcbs.com/ |
| SVH | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SVJ | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| SVL | Unknown Assignment | https://www.bcbs.com/ |
| SVM | No Prefix Assigned | N/A |
| SVN | Blue Cross Blue Shield of North Carolina | https://www.bluecrossnc.com/ |
| SVP | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SVQ | Blue Cross Blue Shield of Oklahoma | https://www.bcbsok.com/ |
| SVS | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SVT | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SVV | Capital Blue Cross | https://www.capbluecross.com/ |
| SVX | Blue Shield of California | https://blueshieldcaplans.com/ |
| SVY | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SVZ | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| SWB | Blue Cross Blue Shield of Arizona | https://www.azblue.com/individualsandfamilies |
| SWC | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| SWD | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SWF | No Prefix Assigned | N/A |
| SWG | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SWH | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SWJ | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SWK | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SWL | No Prefix Assigned | N/A |
| SWM | No Prefix Assigned | N/A |
| SWN | No Prefix Assigned | N/A |
| SWO | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SWP | Anthem Blue Cross Blue Shield of Kentucky | https://www.anthem.com/individual-and-family/health-insurance/kentucky/ |
| SWR | Highmark Blue Cross Blue Shield | https://www.highmarkblueshield.com/home/ |
| SWT | Blue Cross Blue Shield of Arizona | https://www.azblue.com/individualsandfamilies |
| SWU | No Prefix Assigned | N/A |
| SWV | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| SWW | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SWX | Independence Blue Cross | https://www.ibx.com/index.jsp |
| SWY | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SWZ | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| SXA | No Prefix Assigned | N/A |
| SXB | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SXC | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SXD | Blue Shield of California | https://blueshieldcaplans.com/ |
| SXE | Anthem Blue Cross Blue Shield of Connecticut | https://www.anthem.com/individual-and-family/health-insurance/connecticut/ |
| SXF | No Prefix Assigned | N/A |
| SXG | No Prefix Assigned | N/A |
| SXI | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SXJ | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SXK | Empire Blue Cross Blue Shield of New York | https://www.empireblue.com/ |
| SXL | No Prefix Assigned | N/A |
| SXN | Regence Blue Cross Blue Shield | https://www.regence.com/member/home |
| SXP | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SXQ | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SXR | No Prefix Assigned | N/A |
| SXT | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SXU | No Prefix Assigned | N/A |
| SXV | Blue Cross of Idaho | https://www.bcidaho.com/ |
| SXW | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SXX | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SXY | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SXZ | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
| SYA | No Prefix Assigned | N/A |
| SYB | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SYD | Blue Cross Blue Shield of Arizona | https://www.azblue.com/individualsandfamilies |
| SYE | Blue Cross Blue Shield of South Carolina | https://www.southcarolinablues.com/web/public/brands/sc/ |
| SYF | Blue Cross Blue Shield of Alabama | https://www.bcbsal.org/web/index.html |
| SYG | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SYH | Blue Cross Blue Shield of Minnesota | https://www.bluecrossmn.com/ |
| SYI | Independence Blue Cross | https://www.ibx.com/index.jsp |
| SYJ | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SYK | Regence Blue Cross Blue Shield | https://www.regence.com/member/home |
| SYL | No Prefix Assigned | N/A |
| SYM | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SYN | No Prefix Assigned | N/A |
| SYO | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SYP | Anthem Blue Cross Blue Shield of Georgia | https://www.anthem.com/individual-and-family/health-insurance/georgia/ |
| SYQ | Blue Cross Blue Shield of Michigan | https://www.bcbsm.com/ |
| SYR | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| SYS | Anthem Blue Cross Blue Shield of Wisconsin | https://www.anthem.com/individual-and-family/wisconsin/ |
| SYT | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| SYU | Blue Cross Blue Shield of Massachusetts | https://home.bluecrossma.com/ |
| SYV | No Prefix Assigned | N/A |
| SYW | Blue Cross Blue Shield of Tennessee | https://www.bcbst.com/get-insurance/index.page |
| SYY | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SYZ | Premera Blue Cross | https://www.premera.com/visitor |
| SZA | Independence Blue Cross | https://www.ibx.com/index.jsp |
| SZB | Regence Blue Cross Blue Shield | https://www.regence.com/member/home |
| SZC | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SZE | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SZF | Blue Cross Blue Shield of Illinois | https://www.bcbsil.com/ |
| SZG | Blue Cross of Idaho | https://www.bcidaho.com/ |
| SZH | Anthem Blue Cross Blue Shield of Virginia | https://www.anthem.com/individual-and-family/health-insurance/virginia/ |
| SZJ | Highmark Blue Cross Blue Shield | https://www.highmarkbcbsde.com/home/ |
| SZK | Wellmark Blue Cross Blue Shield | https://www.wellmark.com/ |
| SZL | Carefirst Blue Cross Blue Shield of Maryland | https://individual.carefirst.com/individuals-families/home.page |
| SZM | Highmark Blue Cross Blue Shield | https://www.highmarkbcbs.com/home/ |
| SZN | Blue Cross Blue Shield of Nebraska | https://www.nebraskablue.com/ |
| SZO | Blue Shield of Northeastern New York | https://www.bsneny.com/ |
| SZP | No Prefix Assigned | N/A |
| SZQ | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SZR | Premera Blue Cross | https://www.premera.com/visitor |
| SZS | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SZT | No Prefix Assigned | N/A |
| SZU | Anthem Blue Cross Blue Shield of Ohio | https://www.anthem.com/individual-and-family/health-insurance/ohio |
| SZX | Premera Blue Cross | https://www.premera.com/visitor |
| SZY | Anthem Blue Cross of California | https://www.anthem.com/ca/individual-and-family/health-insurance/california/ |
