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