| BCBS Prefix List 2024 - Alpha | State Lookup | BCBS Company |
|---|---|---|
| SAA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SAB | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SAC | California | Anthem Blue-Cross |
| SAD | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| SAE | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SAF | California | Anthem Blue-Cross |
| SAG | California | Anthem Blue-Cross |
| SAH | Illinois | Blue-Cross Blue-Shield of Illinois |
| SAI | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SAJ | California | Blue-Shield of California |
| SAK | Illinois | Blue-Cross Blue-Shield of Illinois |
| SAL | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SAM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SAN | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SAO | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SAP | California | Blue-Shield of California |
| SAQ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SAR | Michigan | Blue-Cross Blue-Shield of Michigan |
| SAS | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| SAT | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SAU | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SAV | - | Unallocated/Not Assigned |
| SAW | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| SAX | New York | Empire Blue-Cross Blue-Shield of New York |
| SAY | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SAZ | - | Unallocated/Not Assigned |
| SBA | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| SBB | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| SBC | Illinois | Blue-Cross Blue-Shield of Illinois |
| SBD | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SBE | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SBF | Illinois | Blue-Cross Blue-Shield of Illinois |
| SBG | - | Unallocated/Not Assigned |
| SBH | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| SBI | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SBJ | - | Unallocated/Not Assigned |
| SBK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SBL | - | Unallocated/Not Assigned |
| SBM | - | Unallocated/Not Assigned |
| SBN | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SBO | - | Unallocated/Not Assigned |
| SBP | Texas | Blue-Cross Blue-Shield of Texas |
| SBQ | Illinois | Blue-Cross Blue-Shield of Illinois |
| SBR BCBS Prefix | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| SBS | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SBT | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SBU | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| SBV | California | Anthem Blue-Cross |
| SBW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SBX | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SBY | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| SBZ | - | Unallocated/Not Assigned |
| SCA | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| SCB | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SCC | California | Blue-Shield of California |
| SCD | Texas | Blue-Cross Blue-Shield of Texas |
| SCE | Illinois | Blue-Cross Blue-Shield of Illinois |
| SCF | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SCG | Alabama | Blue-Cross Blue-Shield of Alabama |
| SCH | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SCI | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| SCJ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SCK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SCL | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| SCM | Texas | Blue-Cross Blue-Shield of Texas |
| SCN | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SCO | Alabama | Blue-Cross Blue-Shield of Alabama |
| SCP | - | Credence Blue-Cross Blue-Shield |
| SCQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SCR | Michigan | Blue-Cross Blue-Shield of Michigan |
| SCS | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| SCT | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SCU | Idaho | Blue-Cross of Idaho |
| SCV | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SCW | Alabama | Blue-Cross Blue-Shield of Alabama |
| SCX | Illinois | Blue-Cross Blue-Shield of Illinois |
| SCY | Alabama | Blue-Cross Blue-Shield of Alabama |
| SCZ | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SDA | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| SDB | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SDC | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SDD | New York (Northeastern) | Blue-Shield of Northeastern New York |
| SDE | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| SDF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SDG | California | Anthem Blue-Cross |
| SDH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SDI | - | Unallocated/Not Assigned |
| SDJ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SDK | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SDL | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SDM | - | Unallocated/Not Assigned |
| SDN | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| SDO | Illinois | Blue-Cross Blue-Shield of Illinois |
| SDP | New York | Empire Blue-Cross Blue-Shield of New York |
| SDQ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SDR | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| SDS | New York | Excellus Blue-Cross Blue-Shield of New York |
| SDT | Alabama | Blue-Cross Blue-Shield of Alabama |
| SDU | California | Anthem Blue-Cross |
| SDV | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SDW | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| SDX | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SDY | Florida | Florida-Blue |
| SDZ | - | Unallocated/Not Assigned |
| SEA | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| SEB | Michigan | Blue-Cross Blue-Shield of Michigan |
| SEC | Florida | Florida-Blue |
| SED | Illinois | Blue-Cross Blue-Shield of Illinois |
| SEE | Michigan | Blue-Cross Blue-Shield of Michigan |
| SEF | - | Unallocated/Not Assigned |
| SEG | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| SEH | Alabama | Blue-Cross Blue-Shield of Alabama |
| SEI | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| SEJ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SEK | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SEL | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SEM | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SEN | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| SEO | California | Blue-Shield of California |
| SEP | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| SEQ | - | Unallocated/Not Assigned |
| SER | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SES | Michigan | Blue-Cross Blue-Shield of Michigan |
| SET | Texas | Blue-Cross Blue-Shield of Texas |
| SEU | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SEV | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| SEW | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| SEX | - | Unallocated/Not Assigned |
| SEY | California | Anthem Blue-Cross |
| SEZ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SFA | New York | Empire Blue-Cross Blue-Shield of New York |
| SFB | Illinois | Blue-Cross Blue-Shield of Illinois |
| SFC | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SFD | - | Unallocated/Not Assigned |
| SFE | - | Unallocated/Not Assigned |
| SFF | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| SFG | California | Blue-Shield of California |
| SFH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SFI | Illinois | Blue-Cross Blue-Shield of Illinois |
| SFJ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SFK | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SFL | Florida | Florida-Blue |
| SFM | Alabama | Blue-Cross Blue-Shield of Alabama |
| SFN | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SFO | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SFP | Illinois | Blue-Cross Blue-Shield of Illinois |
| SFQ | Mississippi | Blue-Cross Blue-Shield of Mississippi |
| SFR | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SFS | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| SFT | Arkansas | Arkansas Blue-Cross Blue-Shield |
| SFU | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SFV | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SFW | New York | Empire Blue-Cross Blue-Shield of New York |
| SFX | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| SFY | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SFZ BCBS Prefix | Illinois | Blue-Cross Blue-Shield of Illinois |
| SGA | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SGB | Michigan | Blue-Cross Blue-Shield of Michigan |
| SGC | Michigan | Blue-Cross Blue-Shield of Michigan |
| SGD | - | Unallocated/Not Assigned |
| SGE | California | Anthem Blue-Cross |
| SGF | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| SGG | Illinois | Blue-Cross Blue-Shield of Illinois |
| SGH | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SGI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SGJ | Idaho | Blue-Cross of Idaho |
| SGK | - | Unallocated/Not Assigned |
| SGL | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| SGM | Michigan | Blue-Cross Blue-Shield of Michigan |
| SGN | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| SGO | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SGP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SGQ | - | Unallocated/Not Assigned |
| SGR | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SGS | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SGT | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SGU | Florida | Florida-Blue |
| SGV | California | Anthem Blue-Cross |
| SGW | Illinois | Blue-Cross Blue-Shield of Illinois |
| SGX | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SGY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SGZ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SHA | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| SHB | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SHC | California | Anthem Blue-Cross |
| SHD | New York | Empire Blue-Cross Blue-Shield of New York |
| SHE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SHF | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| SHG | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| SHH | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| SHI | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SHJ | - | Unallocated/Not Assigned |
| SHK | Alabama | Blue-Cross Blue-Shield of Alabama |
| SHL | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SHM | New York | Empire Blue-Cross Blue-Shield of New York |
| SHN | Illinois | Blue-Cross Blue-Shield of Illinois |
| SHO | California | Anthem Blue-Cross |
| SHP BCBS Prefix | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| SHQ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SHR | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SHS | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SHT | Texas | Blue-Cross Blue-Shield of Texas |
| SHU | - | Unallocated/Not Assigned |
| SHV | - | Unallocated/Not Assigned |
| SHW | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SHX | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| SHY | - | Unallocated/Not Assigned |
| SHZ | North Dakota | Blue-Cross Blue-Shield of North Dakota |
| SIA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SIB | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SIC | California | Blue-Shield of California |
| SID | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| SIE | - | Unallocated/Not Assigned |
| SIF | California | Anthem Blue-Cross |
| SIG | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SIH | New York | Empire Blue-Cross Blue-Shield of New York |
| SII | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SIJ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SIK | - | Unallocated/Not Assigned |
| SIL | California | Blue-Shield of California |
| SIM | Arkansas | Arkansas Blue-Cross Blue-Shield |
| SIN | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SIO | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| SIP | - | Unallocated/Not Assigned |
| SIQ | - | Unallocated/Not Assigned |
| SIR | California | Anthem Blue-Cross |
| SIS | - | Unallocated/Not Assigned |
| SIT | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SIU | Illinois | Blue-Cross Blue-Shield of Illinois |
| SIV | California | Blue-Shield of California |
| SIW | Illinois | Blue-Cross Blue-Shield of Illinois |
| SIX | - | Unallocated/Not Assigned |
| SIY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SIZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SJA | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SJB | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SJC | Florida | Florida-Blue |
| SJD | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SJE | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SJF | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SJG | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| SJH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SJI | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| SJJ | - | Unallocated/Not Assigned |
| SJK | Arkansas | Arkansas Blue-Cross Blue-Shield |
| SJL | Illinois | Blue-Cross Blue-Shield of Illinois |
| SJM | - | Unallocated/Not Assigned |
| SJN | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SJO | California | Anthem Blue-Cross |
| SJP | Illinois | Blue-Cross Blue-Shield of Illinois |
| SJQ | - | Unallocated/Not Assigned |
| SJR | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SJS | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SJT | Alabama | Blue-Cross Blue-Shield of Alabama |
| SJU | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SJV | - | Unallocated/Not Assigned |
| SJW | - | Unallocated/Not Assigned |
| SJX | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SJY | California | Blue-Shield of California |
| SJZ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| SKA | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SKB | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SKC | - | Unallocated/Not Assigned |
| SKD | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SKE | - | Unallocated/Not Assigned |
| SKF | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| SKG | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SKH | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SKI | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SKJ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SKK | Illinois | Blue-Cross Blue-Shield of Illinois |
| SKL | Illinois | Blue-Cross Blue-Shield of Illinois |
| SKM | - | Unallocated/Not Assigned |
| SKN | Texas | Blue-Cross Blue-Shield of Texas |
| SKO | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| SKP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SKQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SKR | - | Unallocated/Not Assigned |
| SKS | Illinois | Blue-Cross Blue-Shield of Illinois |
| SKT | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| SKU | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| SKV | - | Unallocated/Not Assigned |
| SKW | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SKX | Texas | Blue-Cross Blue-Shield of Texas |
| SKY | Illinois | Blue-Cross Blue-Shield of Illinois |
| SKZ | - | Unallocated/Not Assigned |
| SLA | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SLB | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| SLC | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| SLD | - | Unallocated/Not Assigned |
| SLE | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| SLF | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| SLG | California | Anthem Blue-Cross |
| SLH | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| SLI | Alabama | Blue-Cross Blue-Shield of Alabama |
| SLJ | - | Unallocated/Not Assigned |
| SLK | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SLL | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| SLM | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| SLN | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SLO | - | Unallocated/Not Assigned |
| SLP | - | Unallocated/Not Assigned |
| SLQ | - | Unallocated/Not Assigned |
| SLR | Texas | Blue-Cross Blue-Shield of Texas |
| SLS | Florida | Florida-Blue |
| SLT | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SLU | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| SLV | - | Unallocated/Not Assigned |
| SLW | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| SLX | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| SLY | - | Unallocated/Not Assigned |
| SLZ | - | Unallocated/Not Assigned |
| SMA | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| SMB | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SMC | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SMD | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| SME | New York | Empire Blue-Cross Blue-Shield of New York |
| SMF | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SMG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SMH | Alabama | Blue-Cross Blue-Shield of Alabama |
| SMI | - | Unallocated/Not Assigned |
| SMJ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SMK | Michigan | Blue-Cross Blue-Shield of Michigan |
| SML | Illinois | Blue-Cross Blue-Shield of Illinois |
| SMM | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SMN | New York | Empire Blue-Cross Blue-Shield of New York |
| SMO | - | Unallocated/Not Assigned |
| SMP | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SMQ | - | Unallocated/Not Assigned |
| SMR | - | Unallocated/Not Assigned |
| SMS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SMT | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SMU | Michigan | Blue-Cross Blue-Shield of Michigan |
| SMV | Michigan | Blue-Cross Blue-Shield of Michigan |
| SMW | Illinois | Blue-Cross Blue-Shield of Illinois |
| SMX | Michigan | Blue-Cross Blue-Shield of Michigan |
| SMY | Alabama | Blue-Cross Blue-Shield of Alabama |
| SMZ | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SNA | California | Anthem Blue-Cross |
| SNB | Texas | Blue-Cross Blue-Shield of Texas |
| SNC | - | Unallocated/Not Assigned |
| SND | - | Unallocated/Not Assigned |
| SNE | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SNF | - | Unallocated/Not Assigned |
| SNG | - | Unallocated/Not Assigned |
| SNH | - | Unallocated/Not Assigned |
| SNI | - | Unallocated/Not Assigned |
| SNJ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SNK | Arizona | Blue-Cross Blue-Shield of Arizona |
| SNL | Illinois | Blue-Cross Blue-Shield of Illinois |
| SNM | - | Unallocated/Not Assigned |
| SNN | - | Unallocated/Not Assigned |
| SNO | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SNP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SNQ | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| SNR | - | Unallocated/Not Assigned |
| SNS | Illinois | Blue-Cross Blue-Shield of Illinois |
| SNT | - | Unallocated/Not Assigned |
| SNU | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| SNV | Michigan | Blue-Cross Blue-Shield of Michigan |
| SNW | - | Unallocated/Not Assigned |
| SNX | California | Anthem Blue-Cross |
| SNY | - | Credence Blue-Cross Blue-Shield |
| SNZ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SOA | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| SOB | Michigan | Blue-Cross Blue-Shield of Michigan |
| SOC | California | Blue-Shield of California |
| SOD | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| SOE | Illinois | Blue-Cross Blue-Shield of Illinois |
| SOF | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SOG | - | Unallocated/Not Assigned |
| SOH | - | Unallocated/Not Assigned |
| SOI | - | Unallocated/Not Assigned |
| SOJ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SOK | California | Blue-Shield of California |
| SOL | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| SOM | - | Unallocated/Not Assigned |
| SON | California | Blue-Shield of California |
| SOO | California | Blue-Shield of California |
| SOP | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SOQ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SOR | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| SOS | Florida | Florida-Blue |
| SOT | - | Unallocated/Not Assigned |
| SOU | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| SOV | - | Unallocated/Not Assigned |
| SOW | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SOX | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| SOY | - | Unallocated/Not Assigned |
| SOZ | - | Unallocated/Not Assigned |
| SPA | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SPB | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| SPC | - | Unallocated/Not Assigned |
| SPD | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SPE | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| SPF | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SPG | California | Blue-Shield of California |
| SPH | Arizona | Blue-Cross Blue-Shield of Arizona |
| SPI | California | Anthem Blue-Cross |
| SPJ | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SPK | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SPL | Illinois | Blue-Cross Blue-Shield of Illinois |
| SPM | - | Unallocated/Not Assigned |
| SPN | Texas | Blue-Cross Blue-Shield of Texas |
| SPO | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| SPP | - | Unallocated/Not Assigned |
| SPQ | Illinois | Blue-Cross Blue-Shield of Illinois |
| SPR | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SPS | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SPT | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SPU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SPV | - | Unallocated/Not Assigned |
| SPW | California | Blue-Shield of California |
| SPX | Idaho | Blue-Cross of Idaho |
| SPY | - | Unallocated/Not Assigned |
| SPZ | - | Unallocated/Not Assigned |
| SQA | - | Unallocated/Not Assigned |
| SQB | - | Unallocated/Not Assigned |
| SQC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SQD | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SQE | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SQF | - | Unallocated/Not Assigned |
| SQG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SQH | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| SQI | - | Unallocated/Not Assigned |
| SQJ | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| SQK | California | Anthem Blue-Cross |
| SQL | - | Unallocated/Not Assigned |
| SQM | California | Blue-Shield of California |
| SQN | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| SQO | Michigan | Blue-Cross Blue-Shield of Michigan |
| SQP | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| SQQ | Idaho | Blue-Cross of Idaho |
| SQR | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SQS | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SQT | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SQU | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SQV | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SQW | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SQX | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SQY | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SQZ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SRA | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SRB | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| SRC | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SRD | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SRE | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| SRF | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| SRG | California | Blue-Shield of California |
| SRH | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| SRI | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| SRJ | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| SRK | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SRL | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| SRM | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| SRN | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SRO | New York | Excellus Blue-Cross Blue-Shield of New York |
| SRP | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SRQ | California | Anthem Blue-Cross |
| SRR | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SRS | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SRT | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| SRU | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| SRV | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| SRW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SRX | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SRY | Illinois | Blue-Cross Blue-Shield of Illinois |
| SRZ | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| SSA | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SSB | - | Unallocated/Not Assigned |
| SSC | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| SSD | California | Blue-Shield of California |
| SSE | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SSF | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| SSG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SSH | - | Unallocated/Not Assigned |
| SSI | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SSJ | - | Unallocated/Not Assigned |
| SSK | New York | Empire Blue-Cross Blue-Shield of New York |
| SSL | California | Blue-Shield of California |
| SSM | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SSN | - | Unallocated/Not Assigned |
| SSO | California | Blue-Shield of California |
| SSP | - | Unallocated/Not Assigned |
| SSQ | Idaho | Blue-Cross of Idaho |
| SSR | - | Unallocated/Not Assigned |
| SSS | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| SST | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SSU | California | Anthem Blue-Cross |
| SSV | - | Unallocated/Not Assigned |
| SSW | - | Unallocated/Not Assigned |
| SSX | Texas | Blue-Cross Blue-Shield of Texas |
| SSY | California | Anthem Blue-Cross |
| SSZ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| STA | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| STB | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| STC | Alabama | Blue-Cross Blue-Shield of Alabama |
| STD | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| STE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| STF | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| STG | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| STH | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| STI | Texas | Blue-Cross Blue-Shield of Texas |
| STJ | Alaska | Premera Blue-Cross of Alaska |
| STK | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| STL | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| STM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| STN | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| STO | - | Unallocated/Not Assigned |
| STP | Texas | Blue-Cross Blue-Shield of Texas |
| STQ | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| STR | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| STS | California | Blue-Shield of California |
| STT | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| STU | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| STV | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| STW | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| STX | Illinois | Blue-Cross Blue-Shield of Illinois |
| STY | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| STZ | Florida | Florida-Blue |
| SUA | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SUB | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SUC | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SUD | New York | Excellus Blue-Cross Blue-Shield of New York |
| SUE | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| SUF | New York | Empire Blue-Cross Blue-Shield of New York |
| SUG | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SUH | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| SUI | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SUJ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SUK | - | Unallocated/Not Assigned |
| SUL | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SUM | Alabama | Blue-Cross Blue-Shield of Alabama |
| SUN | Illinois | Blue-Cross Blue-Shield of Illinois |
| SUO | - | Unallocated/Not Assigned |
| SUP | Illinois | Blue-Cross Blue-Shield of Illinois |
| SUQ | - | Unallocated/Not Assigned |
| SUR | Illinois | Blue-Cross Blue-Shield of Illinois |
| SUS | New York | Excellus Blue-Cross Blue-Shield of New York |
| SUT | California | Anthem Blue-Cross |
| SUU | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SUV | Alabama | Blue-Cross Blue-Shield of Alabama |
| SUW | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| SUX | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SUY | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SUZ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| SVA | - | Unallocated/Not Assigned |
| SVB | Michigan | Blue-Cross Blue-Shield of Michigan |
| SVC | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| SVD | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| SVE | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| SVF | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| SVG | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| SVH | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SVI | - | Unallocated/Not Assigned |
| SVJ | - | Unallocated/Not Assigned |
| SVK | Mississippi | Blue-Cross Blue-Shield of Mississippi |
| SVL | Kansas | Blue-Cross Blue-Shield of Kansas |
| SVM | - | Unallocated/Not Assigned |
| SVN | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| SVO | California | Blue-Shield of California |
| SVP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SVQ | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| SVR | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SVS | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SVT | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SVU | Illinois | Blue-Cross Blue-Shield of Illinois |
| SVV | - | Unallocated/Not Assigned |
| SVW | - | Unallocated/Not Assigned |
| SVX | California | Blue-Shield of California |
| SVY | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SVZ | - | Unallocated/Not Assigned |
| SWA | - | Unallocated/Not Assigned |
| SWB | Arizona | Blue-Cross Blue-Shield of Arizona |
| SWC | - | Unallocated/Not Assigned |
| SWD | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SWE | - | Unallocated/Not Assigned |
| SWF | - | Unallocated/Not Assigned |
| SWG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SWH | Illinois | Blue-Cross Blue-Shield of Illinois |
| SWI | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SWJ | Illinois | Blue-Cross Blue-Shield of Illinois |
| SWK | Illinois | Blue-Cross Blue-Shield of Illinois |
| SWL | - | Unallocated/Not Assigned |
| SWM | - | Unallocated/Not Assigned |
| SWN | - | Unallocated/Not Assigned |
| SWO | - | Unallocated/Not Assigned |
| SWP | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| SWQ | - | Unallocated/Not Assigned |
| SWR | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| SWS | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SWT | Arizona | Blue-Cross Blue-Shield of Arizona |
| SWU | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SWV | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| SWW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SWX | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SWY | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SWZ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| SXA | Arkansas | Arkansas Blue-Cross Blue-Shield |
| SXB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SXC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SXD | California | Blue-Shield of California |
| SXE | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SXF | - | Unallocated/Not Assigned |
| SXG | - | Unallocated/Not Assigned |
| SXH | - | Unallocated/Not Assigned |
| SXI | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SXJ | California | Anthem Blue-Cross |
| SXK | New York | Empire Blue-Cross Blue-Shield of New York |
| SXL | - | Unallocated/Not Assigned |
| SXM | California | Blue-Shield of California |
| SXN | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| SXO | Michigan | Blue-Cross Blue-Shield of Michigan |
| SXP | - | Unallocated/Not Assigned |
| SXQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SXR | - | Unallocated/Not Assigned |
| SXS | - | Unallocated/Not Assigned |
| SXT | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SXU | - | Unallocated/Not Assigned |
| SXV | Idaho | Blue-Cross of Idaho |
| SXW | Illinois | Blue-Cross Blue-Shield of Illinois |
| SXX | Illinois | Blue-Cross Blue-Shield of Illinois |
| SXY | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SXZ | California | Anthem Blue-Cross |
| SYA | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SYB | Illinois | Blue-Cross Blue-Shield of Illinois |
| SYC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SYD | Arizona | Blue-Cross Blue-Shield of Arizona |
| SYE | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| SYF | Alabama | Blue-Cross Blue-Shield of Alabama |
| SYG | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SYH | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| SYI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SYJ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SYK | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| SYL | - | Unallocated/Not Assigned |
| SYM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SYN | - | Unallocated/Not Assigned |
| SYO | Michigan | Blue-Cross Blue-Shield of Michigan |
| SYP | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SYQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| SYR | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| SYS | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| SYT | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| SYU | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SYV | - | Unallocated/Not Assigned |
| SYW | - | Unallocated/Not Assigned |
| SYX | Alabama | Blue-Cross Blue-Shield of Alabama |
| SYY BCBS Prefix | Illinois | Blue-Cross Blue-Shield of Illinois |
| SYZ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| SZA | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| SZB | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| SZC | Illinois | Blue-Cross Blue-Shield of Illinois |
| SZD | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| SZE | Illinois | Blue-Cross Blue-Shield of Illinois |
| SZF | Illinois | Blue-Cross Blue-Shield of Illinois |
| SZG | - | Unallocated/Not Assigned |
| SZH | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| SZI | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| SZJ | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| SZK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| SZL | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| SZM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| SZN | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| SZO | New York (Northeastern) | Blue-Shield of Northeastern New York |
| SZP | - | Unallocated/Not Assigned |
| SZQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SZR | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| SZS | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SZT | - | Unallocated/Not Assigned |
| SZU | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| SZV | - | Unallocated/Not Assigned |
| SZW | - | Unallocated/Not Assigned |
| SZX | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| SZY BCBS Prefix | California | Anthem Blue-Cross |
| SZZ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
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