| DAA | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| DAB | Michigan | Blue-Cross Blue-Shield of Michigan |
| DAC | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DAD | Illinois | Blue-Cross Blue-Shield of Illinois |
| DAE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DAF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DAG | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DAH | California | Anthem Blue-Cross |
| DAI | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DAJ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DAK | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DAL | Texas | Blue-Cross Blue-Shield of Texas |
| DAM | - | Unallocated/Not Assigned |
| DAN | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DAO | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DAP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DAQ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DAR | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DAS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DAT | Texas | Blue-Cross Blue-Shield of Texas |
| DAU | - | Unallocated/Not Assigned |
| DAV | - | Unallocated/Not Assigned |
| DAW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DAX | Illinois | Blue-Cross Blue-Shield of Illinois |
| DAY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DAZ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DBA | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| DBB | - | Unallocated/Not Assigned |
| DBC | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DBD | - | Unallocated/Not Assigned |
| DBE | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DBF | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DBG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DBH | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| DBI | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| DBJ | - | Unallocated/Not Assigned |
| DBK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DBL | Alabama | Blue-Cross Blue-Shield of Alabama |
| DBM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DBN | - | Unallocated/Not Assigned |
| DBO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DBP | - | Unallocated/Not Assigned |
| DBQ | - | Unallocated/Not Assigned |
| DBR | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DBS | - | Unallocated/Not Assigned |
| DBT | Michigan | Blue-Cross Blue-Shield of Michigan |
| DBU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DBV | Michigan | Blue-Cross Blue-Shield of Michigan |
| DBW | Michigan | Blue-Cross Blue-Shield of Michigan |
| DBX | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DBY | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DBZ | - | Unallocated/Not Assigned |
| DCA | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| DCB | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DCC | Michigan | Blue-Cross Blue-Shield of Michigan |
| DCD | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DCE | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DCF | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DCG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DCH | Michigan | Blue-Cross Blue-Shield of Michigan |
| DCI | - | Unallocated/Not Assigned |
| DCJ | - | Unallocated/Not Assigned |
| DCK | - | Unallocated/Not Assigned |
| DCL | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DCM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DCN | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| DCO | - | Unallocated/Not Assigned |
| DCP | Illinois | Blue-Cross Blue-Shield of Illinois |
| DCQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DCR | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DCS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DCT | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DCU | - | Unallocated/Not Assigned |
| DCV | Texas | Blue-Cross Blue-Shield of Texas |
| DCW | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| DCX | Alabama | Blue-Cross Blue-Shield of Alabama |
| DCY | - | Unallocated/Not Assigned |
| DCZ | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| DDA | Florida | Florida-Blue |
| DDB | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DDC | - | Unallocated/Not Assigned |
| DDD | - | Unallocated/Not Assigned |
| DDE | - | Unallocated/Not Assigned |
| DDF | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| DDG | Texas | Blue-Cross Blue-Shield of Texas |
| DDH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DDI | - | Unallocated/Not Assigned |
| DDJ | Michigan | Blue-Cross Blue-Shield of Michigan |
| DDK | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DDL | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| DDM | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DDN | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| DDO | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| DDP | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| DDQ | - | Unallocated/Not Assigned |
| DDR | - | Unallocated/Not Assigned |
| DDS | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DDT | California | Blue-Shield of California |
| DDU | - | Unallocated/Not Assigned |
| DDV | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DDW | - | Unallocated/Not Assigned |
| DDX | - | Unallocated/Not Assigned |
| DDY | Michigan | Blue-Cross Blue-Shield of Michigan |
| DDZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| DEA | Illinois | Blue-Cross Blue-Shield of Illinois |
| DEB | California | Anthem Blue-Cross |
| DEC | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| DED | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DEE | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| DEF | Illinois | Blue-Cross Blue-Shield of Illinois |
| DEG | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DEH | Michigan | Blue-Cross Blue-Shield of Michigan |
| DEI | Michigan | Blue-Cross Blue-Shield of Michigan |
| DEJ | California | Blue-Shield of California |
| DEK | Michigan | Blue-Cross Blue-Shield of Michigan |
| DEL | California | Anthem Blue-Cross |
| DEM | Michigan | Blue-Cross Blue-Shield of Michigan |
| DEN | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| DEO | California | Blue-Shield of California |
| DEP | California | Anthem Blue-Cross |
| DEQ | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| DER | Texas | Blue-Cross Blue-Shield of Texas |
| DES | Michigan | Blue-Cross Blue-Shield of Michigan |
| DET | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| DEU | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| DEV | - | Unallocated/Not Assigned |
| DEW | - | Unallocated/Not Assigned |
| DEX | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DEY | Illinois | Blue-Cross Blue-Shield of Illinois |
| DEZ | - | Unallocated/Not Assigned |
| DFA | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| DFB | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DFC | Illinois | Blue-Cross Blue-Shield of Illinois |
| DFD | - | Unallocated/Not Assigned |
| DFE | - | Unallocated/Not Assigned |
| DFF | - | Unallocated/Not Assigned |
| DFG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DFH | - | Unallocated/Not Assigned |
| DFI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DFJ | - | Unallocated/Not Assigned |
| DFK | Michigan | Blue-Cross Blue-Shield of Michigan |
| DFL | - | Unallocated/Not Assigned |
| DFM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DFN | Florida | Florida-Blue |
| DFO | California | Blue-Shield of California |
| DFP | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DFQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DFR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DFS | Illinois | Blue-Cross Blue-Shield of Illinois |
| DFT | Texas | Blue-Cross Blue-Shield of Texas |
| DFU | - | Unallocated/Not Assigned |
| DFV | Illinois | Blue-Cross Blue-Shield of Illinois |
| DFW | - | Unallocated/Not Assigned |
| DFX | Florida | Florida-Blue |
| DFY | Texas | Blue-Cross Blue-Shield of Texas |
| DFZ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DGA | California | Anthem Blue-Cross |
| DGB | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DGC | California | Blue-Shield of California |
| DGD | Idaho | Blue-Cross of Idaho |
| DGE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DGF | California | Blue-Shield of California |
| DGG | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| DGH | - | Unallocated/Not Assigned |
| DGI | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DGJ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DGK | Florida | Florida-Blue |
| DGL | Alabama | Blue-Cross Blue-Shield of Alabama |
| DGM | - | Unallocated/Not Assigned |
| DGN | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DGO | Michigan | Blue-Cross Blue-Shield of Michigan |
| DGP | Michigan | Blue-Cross Blue-Shield of Michigan |
| DGQ | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DGR | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DGS | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DGT | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DGU | Alabama | Blue-Cross Blue-Shield of Alabama |
| DGV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DGW | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DGX | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DGY | Michigan | Blue-Cross Blue-Shield of Michigan |
| DGZ | - | Unallocated/Not Assigned |
| DHA | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| DHB | New York | Empire Blue-Cross Blue-Shield of New York |
| DHC | Alabama | Blue-Cross Blue-Shield of Alabama |
| DHD | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DHE | Michigan | Blue-Cross Blue-Shield of Michigan |
| DHF | New York | Empire Blue-Cross Blue-Shield of New York |
| DHG | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| DHH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DHI | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| DHJ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DHK | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DHL | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DHM | Michigan | Blue-Cross Blue-Shield of Michigan |
| DHN | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DHO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DHP | New York | Excellus Blue-Cross Blue-Shield of New York |
| DHQ | - | Unallocated/Not Assigned |
| DHR | - | Unallocated/Not Assigned |
| DHS | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| DHT | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| DHU | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| DHV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DHW | Illinois | Blue-Cross Blue-Shield of Illinois |
| DHX | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DHY | New York | Empire Blue-Cross Blue-Shield of New York |
| DHZ | - | Unallocated/Not Assigned |
| DIA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DIB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DIC | - | Unallocated/Not Assigned |
| DID | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DIE | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DIF | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| DIG | - | Unallocated/Not Assigned |
| DIH | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DII | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DIJ | - | Unallocated/Not Assigned |
| DIK | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DIL | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DIM | - | Unallocated/Not Assigned |
| DIN | - | Unallocated/Not Assigned |
| DIO | Florida | Florida-Blue |
| DIP | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| DIQ | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DIR | Alabama | Blue-Cross Blue-Shield of Alabama |
| DIS | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DIT | California | Blue-Shield of California |
| DIU | - | Unallocated/Not Assigned |
| DIV | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DIW | New York | Empire Blue-Cross Blue-Shield of New York |
| DIX | - | Unallocated/Not Assigned |
| DIY | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DIZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DJA | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| DJB | California | Anthem Blue-Cross |
| DJC | - | Unallocated/Not Assigned |
| DJD | Florida | Florida-Blue |
| DJE | - | Unallocated/Not Assigned |
| DJF | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| DJG | - | Unallocated/Not Assigned |
| DJH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DJI | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| DJJ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| DJK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DJL | New York | Empire Blue-Cross Blue-Shield of New York |
| DJM | Texas | Blue-Cross Blue-Shield of Texas |
| DJN | California | Blue-Shield of California |
| DJO | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| DJP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DJQ | Florida | Florida-Blue |
| DJR | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DJS | - | Unallocated/Not Assigned |
| DJT | - | Unallocated/Not Assigned |
| DJU | - | Unallocated/Not Assigned |
| DJV | California | Anthem Blue-Cross |
| DJW | California | Blue-Shield of California |
| DJX | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DJY | - | Unallocated/Not Assigned |
| DJZ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DKA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DKB | - | Unallocated/Not Assigned |
| DKC | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DKD | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DKE | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| DKF | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DKG | - | Unallocated/Not Assigned |
| DKH | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| DKI | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DKJ | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| DKK | Illinois | Blue-Cross Blue-Shield of Illinois |
| DKL | - | Unallocated/Not Assigned |
| DKM | Michigan | Blue-Cross Blue-Shield of Michigan |
| DKN | - | Unallocated/Not Assigned |
| DKO | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DKP | Michigan | Blue-Cross Blue-Shield of Michigan |
| DKQ | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DKR | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DKS | Michigan | Blue-Cross Blue-Shield of Michigan |
| DKT | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DKU | - | Unallocated/Not Assigned |
| DKV | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DKW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DKX | - | Unallocated/Not Assigned |
| DKY | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| DKZ | California | Anthem Blue-Cross |
| DLA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DLB | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DLC | - | Unallocated/Not Assigned |
| DLD | California | Anthem Blue-Cross |
| DLE | Idaho | Blue-Cross of Idaho |
| DLF | - | Unallocated/Not Assigned |
| DLG | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DLH | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DLI | California | Anthem Blue-Cross |
| DLJ | Idaho | Blue-Cross of Idaho |
| DLK | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| DLL | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DLM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DLN | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| DLO | Michigan | Blue-Cross Blue-Shield of Michigan |
| DLP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DLQ | California | Anthem Blue-Cross |
| DLR | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| DLS | - | Unallocated/Not Assigned |
| DLT | Illinois | Blue-Cross Blue-Shield of Illinois |
| DLU | California | Anthem Blue-Cross |
| DLV | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DLW | - | Unallocated/Not Assigned |
| DLX | Illinois | Blue-Cross Blue-Shield of Illinois |
| DLY | - | Unallocated/Not Assigned |
| DLZ | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DMA | Illinois | Blue-Cross Blue-Shield of Illinois |
| DMB | - | Unallocated/Not Assigned |
| DMC | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| DMD | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DME | Illinois | Blue-Cross Blue-Shield of Illinois |
| DMF | - | Unallocated/Not Assigned |
| DMG | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| DMH | Michigan | Blue-Cross Blue-Shield of Michigan |
| DMI | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DMJ | - | Unallocated/Not Assigned |
| DMK | - | Unallocated/Not Assigned |
| DML | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DMM | Michigan | Blue-Cross Blue-Shield of Michigan |
| DMN | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DMO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DMP | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| DMQ | New York | Empire Blue-Cross Blue-Shield of New York |
| DMR | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| DMS | - | Unallocated/Not Assigned |
| DMT | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DMU | - | Unallocated/Not Assigned |
| DMV | Illinois | Blue-Cross Blue-Shield of Illinois |
| DMW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DMX | Idaho | Blue-Cross of Idaho |
| DMY | Illinois | Blue-Cross Blue-Shield of Illinois |
| DMZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DNA | - | Unallocated/Not Assigned |
| DNB | Texas | Blue-Cross Blue-Shield of Texas |
| DNC | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DND | California | Blue-Shield of California |
| DNE | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DNF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DNG | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DNH | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DNI | Florida | Florida-Blue |
| DNJ | - | Unallocated/Not Assigned |
| DNK | - | Unallocated/Not Assigned |
| DNL | Texas | Blue-Cross Blue-Shield of Texas |
| DNM | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DNN | Texas | Blue-Cross Blue-Shield of Texas |
| DNO | Michigan | Blue-Cross Blue-Shield of Michigan |
| DNP | - | Unallocated/Not Assigned |
| DNQ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DNR | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DNS | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DNT | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| DNU | - | Unallocated/Not Assigned |
| DNV | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DNW | Michigan | Blue-Cross Blue-Shield of Michigan |
| DNX | Alabama | Blue-Cross Blue-Shield of Alabama |
| DNY | - | Unallocated/Not Assigned |
| DNZ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DOA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DOB | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DOC | Michigan | Blue-Cross Blue-Shield of Michigan |
| DOD | Florida | Florida-Blue |
| DOE | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| DOF | Michigan | Blue-Cross Blue-Shield of Michigan |
| DOG | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DOH | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DOI | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DOJ | Florida | Florida-Blue |
| DOK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DOL | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DOM | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| DON | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DOO | - | Unallocated/Not Assigned |
| DOP | Michigan | Blue-Cross Blue-Shield of Michigan |
| DOQ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DOR | - | Unallocated/Not Assigned |
| DOS | Michigan | Blue-Cross Blue-Shield of Michigan |
| DOT | - | Unallocated/Not Assigned |
| DOU | Michigan | Blue-Cross Blue-Shield of Michigan |
| DOV | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DOW | Florida | Florida-Blue |
| DOX | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DOY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DOZ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DPA | California | Anthem Blue-Cross |
| DPB | Florida | Florida-Blue |
| DPC | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DPD | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| DPE | New York | Empire Blue-Cross Blue-Shield of New York |
| DPF | Alabama | Blue-Cross Blue-Shield of Alabama |
| DPG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DPH | - | Unallocated/Not Assigned |
| DPI | California | Anthem Blue-Cross |
| DPJ | - | Unallocated/Not Assigned |
| DPK | - | Unallocated/Not Assigned |
| DPL | - | Unallocated/Not Assigned |
| DPM | Illinois | Blue-Cross Blue-Shield of Illinois |
| DPN | - | Unallocated/Not Assigned |
| DPO | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| DPP | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| DPQ | - | Unallocated/Not Assigned |
| DPR | Michigan | Blue-Cross Blue-Shield of Michigan |
| DPS | California | Anthem Blue-Cross |
| DPT | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| DPU | Michigan | Blue-Cross Blue-Shield of Michigan |
| DPV | - | Unallocated/Not Assigned |
| DPW | Texas | Blue-Cross Blue-Shield of Texas |
| DPX | - | Unallocated/Not Assigned |
| DPY | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DPZ | - | Unallocated/Not Assigned |
| DQA | California | Anthem Blue-Cross |
| DQB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DQC | Illinois | Blue-Cross Blue-Shield of Illinois |
| DQD | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| DQE | - | Unallocated/Not Assigned |
| DQF | - | Unallocated/Not Assigned |
| DQG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DQH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DQI | California | Blue-Shield of California |
| DQJ | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| DQK | - | Unallocated/Not Assigned |
| DQL | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DQM | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| DQN | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| DQO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DQP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DQQ | - | Unallocated/Not Assigned |
| DQR | - | Unallocated/Not Assigned |
| DQS | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| DQT | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| DQU | - | Unallocated/Not Assigned |
| DQV | - | Unallocated/Not Assigned |
| DQW | - | Unallocated/Not Assigned |
| DQX | - | Unallocated/Not Assigned |
| DQY | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DQZ | - | Unallocated/Not Assigned |
| DRA | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| DRB | Alabama | Blue-Cross Blue-Shield of Alabama |
| DRC | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DRD | California | Anthem Blue-Cross |
| DRE | Texas | Blue-Cross Blue-Shield of Texas |
| DRF | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DRG | California | Anthem Blue-Cross |
| DRH | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DRI | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| DRJ | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| DRK | - | Unallocated/Not Assigned |
| DRL | - | Unallocated/Not Assigned |
| DRM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DRN | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DRO | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DRP | - | Unallocated/Not Assigned |
| DRQ | - | Unallocated/Not Assigned |
| DRR | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DRS | - | Unallocated/Not Assigned |
| DRT | - | Unallocated/Not Assigned |
| DRU | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| DRV | Illinois | Blue-Cross Blue-Shield of Illinois |
| DRW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DRX | Alabama | Blue-Cross Blue-Shield of Alabama |
| DRY | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| DRZ | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| DSA | - | Unallocated/Not Assigned |
| DSB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DSC | - | Unallocated/Not Assigned |
| DSD | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DSE | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| DSF | California | Blue-Shield of California |
| DSG | - | Unallocated/Not Assigned |
| DSH | Michigan | Blue-Cross Blue-Shield of Michigan |
| DSI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DSJ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DSK | Illinois | Blue-Cross Blue-Shield of Illinois |
| DSL | - | Unallocated/Not Assigned |
| DSM | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| DSN | - | Unallocated/Not Assigned |
| DSO | - | Unallocated/Not Assigned |
| DSP | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| DSQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DSR | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| DSS | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| DST | Illinois | Blue-Cross Blue-Shield of Illinois |
| DSU | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| DSV | - | Unallocated/Not Assigned |
| DSW | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| DSX | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| DSY | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| DSZ | North Dakota | Blue-Cross Blue-Shield of North Dakota |
| DTA | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DTB | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| DTC | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DTD | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| DTE | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DTF | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DTG | - | Unallocated/Not Assigned |
| DTH | Illinois | Blue-Cross Blue-Shield of Illinois |
| DTI | - | Unallocated/Not Assigned |
| DTJ | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| DTK | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| DTL | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DTM | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| DTN | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| DTO | Michigan | Blue-Cross Blue-Shield of Michigan |
| DTP | - | Unallocated/Not Assigned |
| DTQ | - | Unallocated/Not Assigned |
| DTR | - | Unallocated/Not Assigned |
| DTS | - | Unallocated/Not Assigned |
| DTT | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DTU BCBS Prefix | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| DTV | Illinois | Blue-Cross Blue-Shield of Illinois |
| DTW | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| DTX | - | Unallocated/Not Assigned |
| DTY | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| DTZ | Michigan | Blue-Cross Blue-Shield of Michigan |
| DUA | Michigan | Blue-Cross Blue-Shield of Michigan |
| DUB | Michigan | Blue-Cross Blue-Shield of Michigan |
| DUC | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DUD | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DUE | Florida | Florida-Blue |
| DUF | Michigan | Blue-Cross Blue-Shield of Michigan |
| DUG | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| DUH | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DUI | - | Unallocated/Not Assigned |
| DUJ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DUK | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DUL | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DUM | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DUN | Alabama | Blue-Cross Blue-Shield of Alabama |
| DUO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DUP | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| DUQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| DUR | Illinois | Blue-Cross Blue-Shield of Illinois |
| DUS BCBS Prefix | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| DUT | - | Unallocated/Not Assigned |
| DUU | Michigan | Blue-Cross Blue-Shield of Michigan |
| DUV | Florida | Florida-Blue |
| DUW | Michigan | Blue-Cross Blue-Shield of Michigan |
| DUX | Kansas | Blue-Cross Blue-Shield of Kansas |
| DUY | Michigan | Blue-Cross Blue-Shield of Michigan |
| DUZ | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| DVA | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| DVB | New York | Empire Blue-Cross Blue-Shield of New York |
| DVC | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| DVD | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DVE | - | Unallocated/Not Assigned |
| DVF | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| DVG | Illinois | Blue-Cross Blue-Shield of Illinois |
| DVH | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DVI | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DVJ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DVK | - | Unallocated/Not Assigned |
| DVL | - | Unallocated/Not Assigned |
| DVM | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| DVN | California | Anthem Blue-Cross |
| DVO | - | Unallocated/Not Assigned |
| DVP | Michigan | Blue-Cross Blue-Shield of Michigan |
| DVQ | - | Unallocated/Not Assigned |
| DVR | Illinois | Blue-Cross Blue-Shield of Illinois |
| DVS | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DVT | - | Unallocated/Not Assigned |
| DVU | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DVV | - | Unallocated/Not Assigned |
| DVW | - | Unallocated/Not Assigned |
| DVX | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DVY | - | Unallocated/Not Assigned |
| DVZ | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| DWA | Michigan | Blue-Cross Blue-Shield of Michigan |
| DWB | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| DWC | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DWD | Florida | Florida-Blue |
| DWE | California | Blue-Shield of California |
| DWF | Illinois | Blue-Cross Blue-Shield of Illinois |
| DWG | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| DWH | - | Unallocated/Not Assigned |
| DWI | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DWJ | - | Unallocated/Not Assigned |
| DWK | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| DWL | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DWM | Michigan | Blue-Cross Blue-Shield of Michigan |
| DWN | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| DWO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DWP | Illinois | Blue-Cross Blue-Shield of Illinois |
| DWQ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DWR | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DWS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DWT | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DWU | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DWV | - | Unallocated/Not Assigned |
| DWW | - | Unallocated/Not Assigned |
| DWX | - | Unallocated/Not Assigned |
| DWY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DWZ | - | Unallocated/Not Assigned |
| DXA | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DXB | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| DXC | California | Anthem Blue-Cross |
| DXD | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DXE | Texas | Blue-Cross Blue-Shield of Texas |
| DXF | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| DXG | Michigan | Blue-Cross Blue-Shield of Michigan |
| DXH | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DXI | - | Unallocated/Not Assigned |
| DXJ | - | Unallocated/Not Assigned |
| DXK | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| DXL | - | Unallocated/Not Assigned |
| DXM | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| DXN | Texas | Blue-Cross Blue-Shield of Texas |
| DXO | - | Unallocated/Not Assigned |
| DXP BCBS Prefix | Michigan | Blue-Cross Blue-Shield of Michigan |
| DXQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DXR | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| DXS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DXT | - | Unallocated/Not Assigned |
| DXU | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DXV | - | Unallocated/Not Assigned |
| DXW | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| DXX | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DXY | Alabama | Blue-Cross Blue-Shield of Alabama |
| DXZ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DYA | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DYB | - | Unallocated/Not Assigned |
| DYC | Florida | Florida-Blue |
| DYD | Florida | Florida-Blue |
| DYE | Illinois | Blue-Cross Blue-Shield of Illinois |
| DYF | Illinois | Blue-Cross Blue-Shield of Illinois |
| DYG | Michigan | Blue-Cross Blue-Shield of Michigan |
| DYH | - | Unallocated/Not Assigned |
| DYI | - | Unallocated/Not Assigned |
| DYJ | - | Unallocated/Not Assigned |
| DYK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DYL | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DYM | Michigan | Blue-Cross Blue-Shield of Michigan |
| DYN | - | Unallocated/Not Assigned |
| DYO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DYP | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DYQ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| DYR | - | Unallocated/Not Assigned |
| DYS | California | Anthem Blue-Cross |
| DYT | California | Anthem Blue-Cross |
| DYU | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| DYV | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| DYW | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| DYX | Alabama | Blue-Cross Blue-Shield of Alabama |
| DYY | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DYZ | - | Unallocated/Not Assigned |
| DZA | New York | Empire Blue-Cross Blue-Shield of New York |
| DZB | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DZC | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| DZD | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| DZE | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| DZF | - | Unallocated/Not Assigned |
| DZG | New York | Empire Blue-Cross Blue-Shield of New York |
| DZH | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| DZI | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DZJ | Alabama | Blue-Cross Blue-Shield of Alabama |
| DZK | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| DZL | - | Unallocated/Not Assigned |
| DZM | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DZN | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DZO | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| DZP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DZQ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| DZR | - | Unallocated/Not Assigned |
| DZS | - | Unallocated/Not Assigned |
| DZT | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| DZU | - | Unallocated/Not Assigned |
| DZV BCBS Prefix | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| DZW | Michigan | Blue-Cross Blue-Shield of Michigan |
| DZX | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| DZY | - | Unallocated/Not Assigned |
| DZZ | Tennessee | Blue-Cross Blue-Shield of Tennessee |