| TAA | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TAB | California | Anthem Blue-Cross |
| TAC | California | Blue-Shield of California |
| TAD | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| TAE | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| TAF | Illinois | Blue-Cross Blue-Shield of Illinois |
| TAG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TAH | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| TAI | California | Anthem Blue-Cross |
| TAJ | Illinois | Blue-Cross Blue-Shield of Illinois |
| TAK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TAL | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TAM | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TAN | - | Unallocated/Not Assigned |
| TAO | - | Unallocated/Not Assigned |
| TAP | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| TAQ | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| TAR | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TAS | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| TAT | - | Unallocated/Not Assigned |
| TAU | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TAV | Florida | Florida-Blue |
| TAW | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| TAX | - | Unallocated/Not Assigned |
| TAY | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| TAZ | - | Unallocated/Not Assigned |
| TBA | Michigan | Blue-Cross Blue-Shield of Michigan |
| TBB | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| TBC | Texas | Blue-Cross Blue-Shield of Texas |
| TBD | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| TBE | Illinois | Blue-Cross Blue-Shield of Illinois |
| TBF | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| TBG | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TBH | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| TBI | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TBJ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TBK | Illinois | Blue-Cross Blue-Shield of Illinois |
| TBL | - | Unallocated/Not Assigned |
| TBM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TBN | - | Unallocated/Not Assigned |
| TBO | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| TBP | Michigan | Blue-Cross Blue-Shield of Michigan |
| TBQ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| TBR | Michigan | Blue-Cross Blue-Shield of Michigan |
| TBS | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| TBT | California | Anthem Blue-Cross |
| TBU | - | Unallocated/Not Assigned |
| TBV | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TBW | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TBX | Michigan | Blue-Cross Blue-Shield of Michigan |
| TBY | Florida | Florida-Blue |
| TBZ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TCA | Alabama | Blue-Cross Blue-Shield of Alabama |
| TCB | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TCC | Illinois | Blue-Cross Blue-Shield of Illinois |
| TCD | - | Unallocated/Not Assigned |
| TCE | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TCF | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TCG | Texas | Blue-Cross Blue-Shield of Texas |
| TCH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TCI | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TCJ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TCK | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TCL | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| TCM | Michigan | Blue-Cross Blue-Shield of Michigan |
| TCN | - | Unallocated/Not Assigned |
| TCO | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| TCP | Texas | Blue-Cross Blue-Shield of Texas |
| TCQ | California | Blue-Shield of California |
| TCR | Texas | Blue-Cross Blue-Shield of Texas |
| TCS | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| TCT | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TCU | - | Unallocated/Not Assigned |
| TCV | Florida | Florida-Blue |
| TCW | - | Unallocated/Not Assigned |
| TCX | California | Blue-Shield of California |
| TCY | - | Unallocated/Not Assigned |
| TCZ | - | Unallocated/Not Assigned |
| TDA | Illinois | Blue-Cross Blue-Shield of Illinois |
| TDB | Idaho | Blue-Cross of Idaho |
| TDC | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TDD | - | Unallocated/Not Assigned |
| TDE | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TDF | - | Unallocated/Not Assigned |
| TDG | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| TDH | - | Unallocated/Not Assigned |
| TDI | California | Blue-Shield of California |
| TDJ | Michigan | Blue-Cross Blue-Shield of Michigan |
| TDK | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| TDL | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TDM | - | Credence Blue-Cross Blue-Shield |
| TDN | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TDO | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TDP | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| TDQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| TDR | - | Unallocated/Not Assigned |
| TDS | - | Unallocated/Not Assigned |
| TDT | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| TDU | - | Unallocated/Not Assigned |
| TDV | Michigan | Blue-Cross Blue-Shield of Michigan |
| TDW | - | Unallocated/Not Assigned |
| TDX | California | Blue-Shield of California |
| TDY | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TDZ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| TEA BCBS Prefix | Illinois | Blue-Cross Blue-Shield of Illinois |
| TEB | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TEC | Texas | Blue-Cross Blue-Shield of Texas |
| TED | - | Unallocated/Not Assigned |
| TEE | - | Unallocated/Not Assigned |
| TEF | California | Blue-Shield of California |
| TEG | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TEH | California | Blue-Shield of California |
| TEI | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TEJ | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| TEK | Illinois | Blue-Cross Blue-Shield of Illinois |
| TEL | Alabama | Blue-Cross Blue-Shield of Alabama |
| TEM | - | Unallocated/Not Assigned |
| TEN | - | Unallocated/Not Assigned |
| TEO | - | Unallocated/Not Assigned |
| TEP | Illinois | Blue-Cross Blue-Shield of Illinois |
| TEQ | Alabama | Blue-Cross Blue-Shield of Alabama |
| TER | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TES | California | Blue-Shield of California |
| TET | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| TEU | - | Unallocated/Not Assigned |
| TEV | Michigan | Blue-Cross Blue-Shield of Michigan |
| TEW | Illinois | Blue-Cross Blue-Shield of Illinois |
| TEX | Texas | Blue-Cross Blue-Shield of Texas |
| TEY | - | Unallocated/Not Assigned |
| TEZ | - | Unallocated/Not Assigned |
| TFA | - | Unallocated/Not Assigned |
| TFB | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TFC | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TFD | Illinois | Blue-Cross Blue-Shield of Illinois |
| TFE | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TFF | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TFG | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TFH | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| TFI | Idaho | Blue-Cross of Idaho |
| TFJ | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| TFK | - | Unallocated/Not Assigned |
| TFL | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TFM | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TFN | - | Unallocated/Not Assigned |
| TFO | - | Unallocated/Not Assigned |
| TFP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TFQ | - | Unallocated/Not Assigned |
| TFR | Alabama | Blue-Cross Blue-Shield of Alabama |
| TFS | - | Unallocated/Not Assigned |
| TFT | - | Unallocated/Not Assigned |
| TFU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TFV | - | Unallocated/Not Assigned |
| TFW | - | Unallocated/Not Assigned |
| TFX | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TFY | Illinois | Blue-Cross Blue-Shield of Illinois |
| TFZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| TGA | New York | Empire Blue-Cross Blue-Shield of New York |
| TGB | Texas | Blue-Cross Blue-Shield of Texas |
| TGC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TGD | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| TGE | New York | Empire Blue-Cross Blue-Shield of New York |
| TGF | Texas | Blue-Cross Blue-Shield of Texas |
| TGG | - | Unallocated/Not Assigned |
| TGH | Illinois | Blue-Cross Blue-Shield of Illinois |
| TGI | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| TGJ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TGK | - | Unallocated/Not Assigned |
| TGL | Arizona | Blue-Cross Blue-Shield of Arizona |
| TGM | Florida | Florida Explore-My-Plan |
| TGN | Michigan | Blue-Cross Blue-Shield of Michigan |
| TGO | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TGP | - | Unallocated/Not Assigned |
| TGQ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| TGR | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| TGS | New York | Empire Blue-Cross Blue-Shield of New York |
| TGT | - | Unallocated/Not Assigned |
| TGU | - | Unallocated/Not Assigned |
| TGV | - | Unallocated/Not Assigned |
| TGW | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TGX BCBS Prefix | California | Blue-Shield of California |
| TGY | - | Unallocated/Not Assigned |
| TGZ | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| THA | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| THB | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| THC | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| THD | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| THE | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| THF | Texas | Blue-Cross Blue-Shield of Texas |
| THG | Alabama | Blue-Cross Blue-Shield of Alabama |
| THH | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| THI | - | Unallocated/Not Assigned |
| THJ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| THK | - | Unallocated/Not Assigned |
| THL | - | Unallocated/Not Assigned |
| THM | Florida | Florida-Blue |
| THN | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| THO | - | Unallocated/Not Assigned |
| THP | - | Unallocated/Not Assigned |
| THQ | Florida | Florida-Blue |
| THR | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| THS | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| THT | Florida | Florida-Blue |
| THU | California | Anthem Blue-Cross |
| THV | Alabama | Blue-Cross Blue-Shield of Alabama |
| THW | California | Blue-Shield of California |
| THX | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| THY | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| THZ | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TIA | - | Unallocated/Not Assigned |
| TIB | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TIC | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TID | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| TIE | Michigan | Blue-Cross Blue-Shield of Michigan |
| TIF | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TIG | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| TIH | - | Unallocated/Not Assigned |
| TII | - | Unallocated/Not Assigned |
| TIJ | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| TIK | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TIL | - | Unallocated/Not Assigned |
| TIM | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TIN | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| TIO | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TIP | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TIQ | - | Unallocated/Not Assigned |
| TIR | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TIS | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| TIT | - | Unallocated/Not Assigned |
| TIU | Michigan | Blue-Cross Blue-Shield of Michigan |
| TIV | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TIW | Illinois | Blue-Cross Blue-Shield of Illinois |
| TIX | California | Blue-Shield of California |
| TIY BCBS Prefix | Michigan | Blue-Cross Blue-Shield of Michigan |
| TIZ | California | Blue-Shield of California |
| TJA | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TJB | Texas | Blue-Cross Blue-Shield of Texas |
| TJC | - | Unallocated/Not Assigned |
| TJD | Michigan | Blue-Cross Blue-Shield of Michigan |
| TJE | - | Unallocated/Not Assigned |
| TJF | Texas | Blue-Cross Blue-Shield of Texas |
| TJG | - | Unallocated/Not Assigned |
| TJH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TJI | - | Unallocated/Not Assigned |
| TJJ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TJK | Texas | Blue-Cross Blue-Shield of Texas |
| TJL | - | Unallocated/Not Assigned |
| TJM | - | Unallocated/Not Assigned |
| TJN | Alabama | Blue-Cross Blue-Shield of Alabama |
| TJO | - | Unallocated/Not Assigned |
| TJP | Michigan | Blue-Cross Blue-Shield of Michigan |
| TJQ | California | Blue-Shield of California |
| TJR | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| TJS | California | Anthem Blue-Cross |
| TJT | - | Unallocated/Not Assigned |
| TJU | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TJV BCBS Prefix | California | Blue-Shield of California |
| TJW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TJX | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TJY | Texas | Blue-Cross Blue-Shield of Texas |
| TJZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| TKA | Michigan | Blue-Cross Blue-Shield of Michigan |
| TKB | Mississippi | Blue-Cross Blue-Shield of Mississippi |
| TKC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TKD | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| TKE | Illinois | Blue-Cross Blue-Shield of Illinois |
| TKF | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TKG | Illinois | Blue-Cross Blue-Shield of Illinois |
| TKH | Illinois | Blue-Cross Blue-Shield of Illinois |
| TKI | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TKJ | - | Unallocated/Not Assigned |
| TKK | Illinois | Blue-Cross Blue-Shield of Illinois |
| TKL | Texas | Blue-Cross Blue-Shield of Texas |
| TKM | - | Unallocated/Not Assigned |
| TKN | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TKO | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| TKP | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TKQ | - | Unallocated/Not Assigned |
| TKR | - | Unallocated/Not Assigned |
| TKS | - | Unallocated/Not Assigned |
| TKT | Texas | Blue-Cross Blue-Shield of Texas |
| TKU | - | Unallocated/Not Assigned |
| TKV | - | Unallocated/Not Assigned |
| TKW | Michigan | Blue-Cross Blue-Shield of Michigan |
| TKX | Texas | Blue-Cross Blue-Shield of Texas |
| TKY | Michigan | Blue-Cross Blue-Shield of Michigan |
| TKZ | Michigan | Blue-Cross Blue-Shield of Michigan |
| TLA | California | Blue-Shield of California |
| TLB | - | Unallocated/Not Assigned |
| TLC | - | Unallocated/Not Assigned |
| TLD | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TLE | Illinois | Blue-Cross Blue-Shield of Illinois |
| TLF | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| TLG | - | Unallocated/Not Assigned |
| TLH | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TLI | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TLJ | Alabama | Blue-Cross Blue-Shield of Alabama |
| TLK | Michigan | Blue-Cross Blue-Shield of Michigan |
| TLL | California | Anthem Blue-Cross |
| TLM | California | Blue-Shield of California |
| TLN | Illinois | Blue-Cross Blue-Shield of Illinois |
| TLO | Illinois | Blue-Cross Blue-Shield of Illinois |
| TLP | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| TLQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TLR | Illinois | Blue-Cross Blue-Shield of Illinois |
| TLS | - | Unallocated/Not Assigned |
| TLT | Illinois | Blue-Cross Blue-Shield of Illinois |
| TLU | Illinois | Blue-Cross Blue-Shield of Illinois |
| TLV | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| TLW | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| TLX | Illinois | Blue-Cross Blue-Shield of Illinois |
| TLY | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| TLZ | - | Unallocated/Not Assigned |
| TMA | California | Blue-Shield of California |
| TMB | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TMC | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| TMD | Texas | Blue-Cross Blue-Shield of Texas |
| TME | Idaho | Blue-Cross of Idaho |
| TMF | - | Unallocated/Not Assigned |
| TMG | Alabama | Blue-Cross Blue-Shield of Alabama |
| TMH | Michigan | Blue-Cross Blue-Shield of Michigan |
| TMI | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TMJ | Illinois | Blue-Cross Blue-Shield of Illinois |
| TMK | Texas | Blue-Cross Blue-Shield of Texas |
| TML | Illinois | Blue-Cross Blue-Shield of Illinois |
| TMM | Texas | Blue-Cross Blue-Shield of Texas |
| TMN | California | Anthem Blue-Cross |
| TMO | North Dakota | Blue-Cross Blue-Shield of North Dakota |
| TMP | Alaska | Premera Blue-Cross of Alaska |
| TMQ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TMR | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| TMS | Illinois | Blue-Cross Blue-Shield of Illinois |
| TMT | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| TMU | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TMV | Illinois | Blue-Cross Blue-Shield of Illinois |
| TMW | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TMX | Alabama | Blue-Cross Blue-Shield of Alabama |
| TMY | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TMZ | Arizona | Blue-Cross Blue-Shield of Arizona |
| TNA | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| TNB | - | Unallocated/Not Assigned |
| TNC | - | Unallocated/Not Assigned |
| TND | - | Unallocated/Not Assigned |
| TNE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TNF | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TNG | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TNH | - | Unallocated/Not Assigned |
| TNI | Michigan | Blue-Cross Blue-Shield of Michigan |
| TNJ | - | Unallocated/Not Assigned |
| TNK | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| TNL | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TNM | - | Unallocated/Not Assigned |
| TNN | Arkansas | Arkansas Blue-Cross Blue-Shield |
| TNO | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| TNP | - | Unallocated/Not Assigned |
| TNQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TNR | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TNS | New York | Excellus Blue-Cross Blue-Shield of New York |
| TNT | - | Unallocated/Not Assigned |
| TNU | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TNV | New York | Empire Blue-Cross Blue-Shield of New York |
| TNW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TNX | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| TNY | New York | Excellus Blue-Cross Blue-Shield of New York |
| TNZ | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| TOA BCBS Prefix | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| TOB | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TOC | Arkansas | Arkansas Blue-Cross Blue-Shield |
| TOD | Alabama | Blue-Cross Blue-Shield of Alabama |
| TOE | Kansas | Blue-Cross Blue-Shield of Kansas |
| TOF | - | Unallocated/Not Assigned |
| TOG | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TOH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TOI | - | Unallocated/Not Assigned |
| TOJ | - | Unallocated/Not Assigned |
| TOK | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| TOL | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TOM | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TON | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TOO | California | Blue-Shield of California |
| TOP | - | Unallocated/Not Assigned |
| TOQ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TOR | - | Unallocated/Not Assigned |
| TOS | - | Unallocated/Not Assigned |
| TOT | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| TOU | Michigan | Blue-Cross Blue-Shield of Michigan |
| TOV | Michigan | Blue-Cross Blue-Shield of Michigan |
| TOW | - | Unallocated/Not Assigned |
| TOX | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TOY | Michigan | Blue-Cross Blue-Shield of Michigan |
| TOZ | - | Unallocated/Not Assigned |
| TPA | - | Unallocated/Not Assigned |
| TPB | Michigan | Blue-Cross Blue-Shield of Michigan |
| TPC | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TPD | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TPE | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| TPF | California | Anthem Blue-Cross |
| TPG | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| TPH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TPI | Illinois | Blue-Cross Blue-Shield of Illinois |
| TPJ | - | Unallocated/Not Assigned |
| TPK | - | Unallocated/Not Assigned |
| TPL | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| TPM | Michigan | Blue-Cross Blue-Shield of Michigan |
| TPN | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TPO | - | Unallocated/Not Assigned |
| TPP | - | Unallocated/Not Assigned |
| TPQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TPR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TPS | California | Anthem Blue-Cross |
| TPT | New York | Excellus Blue-Cross Blue-Shield of New York |
| TPU | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TPV | Illinois | Blue-Cross Blue-Shield of Illinois |
| TPW | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TPX | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| TPY | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TPZ | - | Unallocated/Not Assigned |
| TQA | Alaska | Premera Blue-Cross of Alaska |
| TQB | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TQC | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TQD | Michigan | Blue-Cross Blue-Shield of Michigan |
| TQE | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| TQF | Michigan | Blue-Cross Blue-Shield of Michigan |
| TQG | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TQH | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TQI | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TQJ | - | Unallocated/Not Assigned |
| TQK | Michigan | Blue-Cross Blue-Shield of Michigan |
| TQL | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TQM | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TQN | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| TQO | North Dakota | Blue-Cross Blue-Shield of North Dakota |
| TQP | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TQQ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TQR | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TQS | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TQT | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TQU | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TQV | - | Unallocated/Not Assigned |
| TQW | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TQX | - | Unallocated/Not Assigned |
| TQY | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TQZ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TRA BCBS Prefix | Illinois | Blue-Cross Blue-Shield of Illinois |
| TRB | Illinois | Blue-Cross Blue-Shield of Illinois |
| TRC | Illinois | Blue-Cross Blue-Shield of Illinois |
| TRD | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| TRE | Arizona | Blue-Cross Blue-Shield of Arizona |
| TRF | Michigan | Blue-Cross Blue-Shield of Michigan |
| TRG | Alaska | Premera Blue-Cross of Alaska |
| TRH | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TRI | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| TRJ | California | Anthem Blue-Cross |
| TRK | Illinois | Blue-Cross Blue-Shield of Illinois |
| TRL | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TRM | California | Blue-Shield of California |
| TRN | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| TRO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TRP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TRQ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TRR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TRS | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| TRT | Alabama | Blue-Cross Blue-Shield of Alabama |
| TRU | Idaho | Blue-Cross of Idaho |
| TRV | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| TRW | Illinois | Blue-Cross Blue-Shield of Illinois |
| TRX | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TRY | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TRZ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TSA | Texas | Blue-Cross Blue-Shield of Texas |
| TSB | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TSC | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TSD | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TSE | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| TSF | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| TSG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TSH | Idaho | Blue-Cross of Idaho |
| TSI | Illinois | Blue-Cross Blue-Shield of Illinois |
| TSJ | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| TSK | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TSL | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| TSM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TSN | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| TSO | - | Unallocated/Not Assigned |
| TSP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TSQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TSR | - | Unallocated/Not Assigned |
| TSS | - | Unallocated/Not Assigned |
| TST | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| TSU | Alaska | Premera Blue-Cross of Alaska |
| TSV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TSW | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| TSX | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TSY | - | Unallocated/Not Assigned |
| TSZ | - | Unallocated/Not Assigned |
| TTA | Idaho | Blue-Cross of Idaho |
| TTB | Texas | Blue-Cross Blue-Shield of Texas |
| TTC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TTD | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TTE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TTF | Texas | Blue-Cross Blue-Shield of Texas |
| TTG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TTH | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TTI | - | Unallocated/Not Assigned |
| TTJ | Florida | Florida-Blue |
| TTK | Arizona | Blue-Cross Blue-Shield of Arizona |
| TTL | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| TTM | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TTN | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TTO | - | Unallocated/Not Assigned |
| TTP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TTQ | - | Unallocated/Not Assigned |
| TTR | Michigan | Blue-Cross Blue-Shield of Michigan |
| TTS | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TTT | - | Unallocated/Not Assigned |
| TTU | Mississippi | Blue-Cross Blue-Shield of Mississippi |
| TTV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TTW | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| TTX | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TTY | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| TTZ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TUA | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| TUB | Illinois | Blue-Cross Blue-Shield of Illinois |
| TUC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TUD | - | Unallocated/Not Assigned |
| TUE | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TUF | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TUG | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| TUH | - | Unallocated/Not Assigned |
| TUI | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TUJ | - | Unallocated/Not Assigned |
| TUK | Illinois | Blue-Cross Blue-Shield of Illinois |
| TUL | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TUM | - | Unallocated/Not Assigned |
| TUN | Alabama | Blue-Cross Blue-Shield of Alabama |
| TUO | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| TUP | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| TUQ | - | Unallocated/Not Assigned |
| TUR | New York | Empire Blue-Cross Blue-Shield of New York |
| TUS | - | Unallocated/Not Assigned |
| TUT | Illinois | Blue-Cross Blue-Shield of Illinois |
| TUU | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TUV | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TUW | - | Unallocated/Not Assigned |
| TUX | Illinois | Blue-Cross Blue-Shield of Illinois |
| TUY | Michigan | Blue-Cross Blue-Shield of Michigan |
| TUZ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TVA | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| TVB | - | Unallocated/Not Assigned |
| TVC | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TVD | - | Unallocated/Not Assigned |
| TVE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TVF | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TVG | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| TVH | - | Unallocated/Not Assigned |
| TVI | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| TVJ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TVK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TVL | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TVM | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TVN | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| TVO | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| TVP | - | Unallocated/Not Assigned |
| TVQ | - | Unallocated/Not Assigned |
| TVR | - | Unallocated/Not Assigned |
| TVS | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| TVT | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TVU | Michigan | Blue-Cross Blue-Shield of Michigan |
| TVV | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TVW | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| TVX | - | Unallocated/Not Assigned |
| TVY | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TVZ | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TWA | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| TWB | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| TWC | Illinois | Blue-Cross Blue-Shield of Illinois |
| TWD | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TWE | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TWF | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TWG | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| TWH | California | Blue-Shield of California |
| TWI | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TWJ | New York | Empire Blue-Cross Blue-Shield of New York |
| TWK | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TWL | Alabama | Blue-Cross Blue-Shield of Alabama |
| TWM | New York | Empire Blue-Cross Blue-Shield of New York |
| TWN | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| TWO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| TWP | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TWQ | New York | Empire Blue-Cross Blue-Shield of New York |
| TWR | California | Anthem Blue-Cross |
| TWS | - | Unallocated/Not Assigned |
| TWT | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TWU | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TWV | Illinois | Blue-Cross Blue-Shield of Illinois |
| TWW | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TWX | Texas | Blue-Cross Blue-Shield of Texas |
| TWY | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| TWZ | - | Unallocated/Not Assigned |
| TXA | Illinois | Blue-Cross Blue-Shield of Illinois |
| TXB | - | Unallocated/Not Assigned |
| TXC | Alabama | Blue-Cross Blue-Shield of Alabama |
| TXD | Texas | Blue-Cross Blue-Shield of Texas |
| TXE | - | Unallocated/Not Assigned |
| TXF | - | Unallocated/Not Assigned |
| TXG | - | Unallocated/Not Assigned |
| TXH | Maine | Anthem Blue-Cross Blue-Shield of Maine |
| TXI | - | Unallocated/Not Assigned |
| TXJ | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| TXK | - | Unallocated/Not Assigned |
| TXL | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| TXM | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TXN | Michigan | Blue-Cross Blue-Shield of Michigan |
| TXO | - | Unallocated/Not Assigned |
| TXP | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| TXQ | - | Unallocated/Not Assigned |
| TXR | Texas | Blue-Cross Blue-Shield of Texas |
| TXS | Texas | Blue-Cross Blue-Shield of Texas |
| TXT | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TXU | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| TXV | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| TXW | Texas | Blue-Cross Blue-Shield of Texas |
| TXX BCBS Prefix | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| TXY | - | Unallocated/Not Assigned |
| TXZ | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| TYA | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| TYB | California | Blue-Shield of California |
| TYC | California | Anthem Blue-Cross |
| TYD | - | Unallocated/Not Assigned |
| TYE | - | Unallocated/Not Assigned |
| TYF | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TYG BCBS Prefix | Arkansas | Arkansas Blue-Cross Blue-Shield |
| TYH | - | Unallocated/Not Assigned |
| TYI | - | Unallocated/Not Assigned |
| TYJ | - | Unallocated/Not Assigned |
| TYK | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TYL | Texas | Blue-Cross Blue-Shield of Texas |
| TYM | Florida | Florida-Blue |
| TYN | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TYO | New York (Northeastern) | Blue-Shield of Northeastern New York |
| TYP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| TYQ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TYR | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| TYS | - | Unallocated/Not Assigned |
| TYT | Illinois | Blue-Cross Blue-Shield of Illinois |
| TYU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| TYV | - | Unallocated/Not Assigned |
| TYW | Arizona | Blue-Cross Blue-Shield of Arizona |
| TYX | - | Unallocated/Not Assigned |
| TYY | Texas | Blue-Cross Blue-Shield of Texas |
| TYZ | Arkansas | Arkansas Blue-Cross Blue-Shield |
| TZA | Illinois | Blue-Cross Blue-Shield of Illinois |
| TZB | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TZC | - | Unallocated/Not Assigned |
| TZD | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TZE | Illinois | Blue-Cross Blue-Shield of Illinois |
| TZF | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| TZG | - | Unallocated/Not Assigned |
| TZH | - | Unallocated/Not Assigned |
| TZI | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| TZJ | Illinois | Blue-Cross Blue-Shield of Illinois |
| TZK | - | Unallocated/Not Assigned |
| TZL | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TZM | California | Anthem Blue-Cross |
| TZN | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TZO | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| TZP | - | Unallocated/Not Assigned |
| TZQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| TZR | - | Unallocated/Not Assigned |
| TZS | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| TZT | Arkansas | Arkansas Blue-Cross Blue-Shield |
| TZU | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TZV | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| TZW | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TZX | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| TZY | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| TZZ | - | Unallocated/Not Assigned |