| BCBS Prefix List 2024 - Alpha | State Lookup | BCBS Company |
|---|---|---|
| AAA | Alabama | Blue-Cross Blue-Shield of Alabama |
| AAB | Michigan | Blue-Cross Blue-Shield of Michigan |
| AAC | Illinois | Blue-Cross Blue-Shield of Illinois |
| AAD | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AAE | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| AAF | Arizona | Blue-Cross Blue-Shield of Arizona |
| AAG | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AAH | California | Blue-Shield of California |
| AAI | Michigan | Blue-Cross Blue-Shield of Michigan |
| AAJ | - | Unallocated/Not Assigned |
| AAK | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| AAL | - | Unallocated/Not Assigned |
| AAM | Alabama | Blue-Cross Blue-Shield of Alabama |
| AAN | New York | Empire Blue-Cross Blue-Shield of New York |
| AAO | California | Blue-Shield of California |
| AAP | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| AAQ | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| AAR | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AAS | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| AAT | California | Anthem Blue-Cross |
| AAU | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AAV | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AAW | - | Unallocated/Not Assigned |
| AAX | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AAY | Idaho | Blue-Cross of Idaho |
| AAZ | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| ABA | Illinois | Blue-Cross Blue-Shield of Illinois |
| ABB | Arizona | Blue-Cross Blue-Shield of Arizona |
| ABC | Alabama | Blue-Cross Blue-Shield of Alabama |
| ABD | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| ABE | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| ABF | New York | Empire Blue-Cross Blue-Shield of New York |
| ABG | Illinois | Blue-Cross Blue-Shield of Illinois |
| ABH | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| ABI | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| ABJ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| ABK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ABL | Illinois | Blue-Cross Blue-Shield of Illinois |
| ABM | Alabama | Blue-Cross Blue-Shield of Alabama |
| ABN | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| ABO | California | Anthem Blue-Cross |
| ABP | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| ABQ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ABR | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ABS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| ABT | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| ABU | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| ABV | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| ABW | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| ABX | California | Blue-Shield of California |
| ABY | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ABZ | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| ACA | Alabama | Blue-Cross Blue-Shield of Alabama |
| ACB | - | Unallocated/Not Assigned |
| ACC | - | Unallocated/Not Assigned |
| ACD | New York | Empire Blue-Cross Blue-Shield of New York |
| ACE | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| ACF | Alaska | Premera Blue-Cross of Alaska |
| ACG | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| ACH | New York | Empire Blue-Cross Blue-Shield of New York |
| ACI | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| ACJ | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| ACK | New York | Empire Blue-Cross Blue-Shield of New York |
| ACL | Idaho | Blue-Cross of Idaho |
| ACM | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| ACN | Texas | Blue-Cross Blue-Shield of Texas |
| ACO | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ACP | - | Unallocated/Not Assigned |
| ACQ | Florida | Florida-Blue |
| ACR | California | Anthem Blue-Cross |
| ACS | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ACT | Illinois | Blue-Cross Blue-Shield of Illinois |
| ACU | California | Blue-Shield of California |
| ACV | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| ACW | California | Anthem Blue-Cross |
| ACX | Illinois | Blue-Cross Blue-Shield of Illinois |
| ACY | - | Unallocated/Not Assigned |
| ACZ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| ADA | California | Anthem Blue-Cross |
| ADB | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| ADC | Illinois | Blue-Cross Blue-Shield of Illinois |
| ADD | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| ADE | Illinois | Blue-Cross Blue-Shield of Illinois |
| ADF | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| ADG | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| ADH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ADI | California | Anthem Blue-Cross |
| ADJ | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| ADK | California | Anthem Blue-Cross |
| ADL | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| ADM | Illinois | Blue-Cross Blue-Shield of Illinois |
| ADN | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| ADO | Michigan | Blue-Cross Blue-Shield of Michigan |
| ADP | New York | Empire Blue-Cross Blue-Shield of New York |
| ADQ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| ADR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| ADS | - | Unallocated/Not Assigned |
| ADT | - | Unallocated/Not Assigned |
| ADU | Florida | Florida-Blue |
| ADV | Illinois | Blue-Cross Blue-Shield of Illinois |
| ADW | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ADX | Florida | Florida Explore-my-plan |
| ADY | - | Unallocated/Not Assigned |
| ADZ | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| AEA | Texas | Blue-Cross Blue-Shield of Texas |
| AEB | - | Unallocated/Not Assigned |
| AEC | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| AED | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AEE | Arkansas | Arkansas Blue-Cross Blue-Shield |
| AEF | Illinois | Blue-Cross Blue-Shield of Illinois |
| AEG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AEH | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AEI | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| AEJ | - | Unallocated/Not Assigned |
| AEK | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AEL | California | Anthem Blue-Cross |
| AEM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AEN | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| AEO | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AEP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| AEQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| AER | Texas | Blue-Cross Blue-Shield of Texas |
| AES | Alabama | Blue-Cross Blue-Shield of Alabama |
| AET | California | Anthem Blue-Cross |
| AEU | Texas | Blue-Cross Blue-Shield of Texas |
| AEV | Texas | Blue-Cross Blue-Shield of Texas |
| AEW | Florida | Florida-Blue |
| AEX | Texas | Blue-Cross Blue-Shield of Texas |
| AEY | - | Unallocated/Not Assigned |
| AEZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| AFA | - | Unallocated/Not Assigned |
| AFB | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| AFC | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| AFD | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AFE | California | Blue-Shield of California |
| AFF | - | Unallocated/Not Assigned |
| AFG | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| AFH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AFI | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| AFJ | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| AFK | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AFL | - | Unallocated/Not Assigned |
| AFM | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| AFN | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AFO | Arkansas | Arkansas Blue-Cross Blue-Shield |
| AFP | - | Unallocated/Not Assigned |
| AFQ | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| AFR | California | Anthem Blue-Cross |
| AFS | - | Unallocated/Not Assigned |
| AFT | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| AFU | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| AFV | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AFW | - | Unallocated/Not Assigned |
| AFX | Illinois | Blue-Cross Blue-Shield of Illinois |
| AFY | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| AFZ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AGA | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AGB | New York | Excellus Blue-Cross Blue-Shield of New York |
| AGC | New York | Empire Blue-Cross Blue-Shield of New York |
| AGD | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| AGE | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AGF | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| AGG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AGH | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AGI | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| AGJ | Idaho | Blue-Cross of Idaho |
| AGK | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| AGL | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| AGM | Idaho | Blue-Cross of Idaho |
| AGN | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AGO | - | Unallocated/Not Assigned |
| AGP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| AGQ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AGR | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| AGS | California | Anthem Blue-Cross |
| AGT | California | Blue-Shield of California |
| AGU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AGV | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AGW | - | Unallocated/Not Assigned |
| AGX | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| AGY | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AGZ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AHA | Illinois | Blue-Cross Blue-Shield of Illinois |
| AHB | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AHC | Alaska | Premera Blue-Cross of Alaska |
| AHD | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AHE | New York | Empire Blue-Cross Blue-Shield of New York |
| AHF | - | Unallocated/Not Assigned |
| AHG | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| AHH | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AHI | - | Unallocated/Not Assigned |
| AHJ | - | Unallocated/Not Assigned |
| AHK | - | Unallocated/Not Assigned |
| AHL | Florida | Florida-Blue |
| AHM | Illinois | Blue-Cross Blue-Shield of Illinois |
| AHN | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AHO | - | Unallocated/Not Assigned |
| AHP | Texas | Blue-Cross Blue-Shield of Texas |
| AHQ | Illinois | Blue-Cross Blue-Shield of Illinois |
| AHR | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AHS | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| AHT | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AHU | - | Unallocated/Not Assigned |
| AHV | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| AHW | Vermont | Blue-Cross Blue-Shield of Vermont |
| AHX | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AHY | - | Unallocated/Not Assigned |
| AHZ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AIA | Texas | Blue-Cross Blue-Shield of Texas |
| AIB | Michigan | Blue-Cross Blue-Shield of Michigan |
| AIC | - | Unallocated/Not Assigned |
| AID | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AIE | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AIF | Michigan | Blue-Cross Blue-Shield of Michigan |
| AIG | Michigan | Blue-Cross Blue-Shield of Michigan |
| AIH | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AII | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| AIJ | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| AIK | Michigan | Blue-Cross Blue-Shield of Michigan |
| AIL | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AIM | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AIN | - | Unallocated/Not Assigned |
| AIO | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| AIP | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| AIQ | - | Unallocated/Not Assigned |
| AIR | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| AIS | Michigan | Blue-Cross Blue-Shield of Michigan |
| AIT | Michigan | Blue-Cross Blue-Shield of Michigan |
| AIU | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| AIV | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AIW | Illinois | Blue-Cross Blue-Shield of Illinois |
| AIX | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AIY | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| AIZ | Florida | Florida-Blue |
| AJA | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AJB | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| AJC | California | Blue-Shield of California |
| AJD | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AJE | Florida | Florida-Blue |
| AJF | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AJG | Illinois | Blue-Cross Blue-Shield of Illinois |
| AJH | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AJI | Florida | Florida-Blue |
| AJJ | - | Unallocated/Not Assigned |
| AJK | Illinois | Blue-Cross Blue-Shield of Illinois |
| AJL | Texas | Blue-Cross Blue-Shield of Texas |
| AJM | - | Unallocated/Not Assigned |
| AJN | - | Unallocated/Not Assigned |
| AJO | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| AJP | - | Unallocated/Not Assigned |
| AJQ | California | Anthem Blue-Cross |
| AJR | Michigan | Blue-Cross Blue-Shield of Michigan |
| AJS | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| AJT | Michigan | Blue-Cross Blue-Shield of Michigan |
| AJU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AJV | Florida | Florida-Blue |
| AJW | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| AJX | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| AJY | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AJZ | - | Unallocated/Not Assigned |
| AKA | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AKB | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AKC | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AKD | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| AKE | - | Unallocated/Not Assigned |
| AKF | New York | Empire Blue-Cross Blue-Shield of New York |
| AKG | - | Unallocated/Not Assigned |
| AKH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AKI | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| AKJ | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| AKK | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AKL | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AKM | Michigan | Blue-Cross Blue-Shield of Michigan |
| AKN | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AKO | - | Unallocated/Not Assigned |
| AKP | - | Unallocated/Not Assigned |
| AKQ | New York | Empire Blue-Cross Blue-Shield of New York |
| AKR | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| AKS | California | Anthem Blue-Cross |
| AKT | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AKU | - | Unallocated/Not Assigned |
| AKV | New York | Empire Blue-Cross Blue-Shield of New York |
| AKW | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AKX | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| AKY | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AKZ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| ALA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| ALB | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ALC | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| ALD | - | Unallocated/Not Assigned |
| ALE | Texas | Blue-Cross Blue-Shield of Texas |
| ALF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| ALG | - | Unallocated/Not Assigned |
| ALH | - | Unallocated/Not Assigned |
| ALI | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| ALJ | - | Unallocated/Not Assigned |
| ALK | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| ALL | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ALM | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ALN | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| ALO | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| ALP | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| ALQ | - | Unallocated/Not Assigned |
| ALR | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| ALS | Michigan | Blue-Cross Blue-Shield of Michigan |
| ALT | Texas | Blue-Cross Blue-Shield of Texas |
| ALU | West Virginia | Highmark Blue-Cross Blue-Shield of West Virginia |
| ALV | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| ALW | Idaho | Blue-Cross of Idaho |
| ALX | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ALY | - | Unallocated/Not Assigned |
| ALZ | - | Unallocated/Not Assigned |
| AMA | Illinois | Blue-Cross Blue-Shield of Illinois |
| AMB | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| AMC | - | Unallocated/Not Assigned |
| AMD | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| AME | California | Blue-Shield of California |
| AMF | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AMG | Illinois | Blue-Cross Blue-Shield of Illinois |
| AMH | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| AMI | Idaho | Blue-Cross of Idaho |
| AMJ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AMK | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| AML | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| AMM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| AMN | Idaho | Blue-Cross of Idaho |
| AMO | - | Unallocated/Not Assigned |
| AMP | California | Blue-Shield of California |
| AMQ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| AMR | Texas | Blue-Cross Blue-Shield of Texas |
| AMS | Illinois | Blue-Cross Blue-Shield of Illinois |
| AMT | Idaho | Blue-Cross of Idaho |
| AMU | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| AMV | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AMW | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AMX | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| AMY | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| AMZ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| ANA | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| ANB | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| ANC | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| AND | Illinois | Blue-Cross Blue-Shield of Illinois |
| ANE | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| ANF | - | Unallocated/Not Assigned |
| ANG | - | Unallocated/Not Assigned |
| ANH | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| ANI | Florida | Florida-Blue |
| ANJ | California | Anthem Blue-Cross |
| ANK | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| ANL | - | Unallocated/Not Assigned |
| ANM | - | Unallocated/Not Assigned |
| ANN | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ANO | Illinois | Blue-Cross Blue-Shield of Illinois |
| ANP | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| ANQ | Florida | Florida-Blue |
| ANR | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ANS | California | Blue-Shield of California |
| ANT | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ANU | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ANV | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ANW | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| ANX | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| ANY | Illinois | Blue-Cross Blue-Shield of Illinois |
| ANZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| AOA | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AOB | Michigan | Blue-Cross Blue-Shield of Michigan |
| AOC | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| AOD | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| AOE | California | Anthem Blue-Cross |
| AOF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| AOG | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| AOH | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| AOI | Texas | Blue-Cross Blue-Shield of Texas |
| AOJ | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| AOK | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| AOL | - | Unallocated/Not Assigned |
| AOM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| AON | Illinois | Blue-Cross Blue-Shield of Illinois |
| AOO | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| AOP | New York (Northeastern) | Blue-Shield of Northeastern New York |
| AOQ | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| AOR | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| AOS | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| AOT | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| AOU | - | Unallocated/Not Assigned |
| AOV | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| AOW | Michigan | Blue-Cross Blue-Shield of Michigan |
| AOX | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| AOY | Idaho | Blue-Cross of Idaho |
| AOZ | California | Anthem Blue-Cross |
| APA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| APB | Arkansas | Arkansas Blue-Cross Blue-Shield |
| APC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| APD | Illinois | Blue-Cross Blue-Shield of Illinois |
| APE | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| APF | - | Unallocated/Not Assigned |
| APG | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| APH | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| API | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| APJ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| APK | Arizona | Blue-Cross Blue-Shield of Arizona |
| APL | - | Unallocated/Not Assigned |
| APM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| APN | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| APO | California | Anthem Blue-Cross |
| APP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| APQ | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| APR | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| APS | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| APT | - | Unallocated/Not Assigned |
| APU | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| APV | Illinois | Blue-Cross Blue-Shield of Illinois |
| APW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| APX | California | Blue-Shield of California |
| APY | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| APZ | - | Unallocated/Not Assigned |
| AQA | Florida | Florida-Blue |
| AQB | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| AQC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AQD | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AQE | Idaho | Blue-Cross of Idaho |
| AQF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| AQG | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AQH | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AQI | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| AQJ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| AQK | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| AQL | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| AQM | - | Unallocated/Not Assigned |
| AQN | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AQO | - | Unallocated/Not Assigned |
| AQP | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AQQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| AQR | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AQS | California | Blue-Shield of California |
| AQT | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| AQU | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| AQV | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| AQW | - | Unallocated/Not Assigned |
| AQX | New York | Empire Blue-Cross Blue-Shield of New York |
| AQY | Alabama | Blue-Cross Blue-Shield of Alabama |
| AQZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| ARA | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| ARB | Texas | Blue-Cross Blue-Shield of Texas |
| ARC | California | Anthem Blue-Cross |
| ARD | New Mexico | Blue-Cross Blue-Shield of New Mexico |
| ARE | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| ARF | - | Unallocated/Not Assigned |
| ARG | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| ARH | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ARI | - | Unallocated/Not Assigned |
| ARJ | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| ARK | California | Anthem Blue-Cross |
| ARL | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ARM | California | Blue-Shield of California |
| ARN | Alabama | Blue-Cross Blue-Shield of Alabama |
| ARO | - | Unallocated/Not Assigned |
| ARP | Illinois | Blue-Cross Blue-Shield of Illinois |
| ARQ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| ARR | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| ARS | Texas | Blue-Cross Blue-Shield of Texas |
| ART | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| ARU | Texas | Blue-Cross Blue-Shield of Texas |
| ARV | California | Anthem Blue-Cross |
| ARW | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| ARX | Kansas | Blue-Cross Blue-Shield of Kansas |
| ARY | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| ARZ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| ASA | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ASB | New York | Excellus Blue-Cross Blue-Shield of New York |
| ASC | - | Unallocated/Not Assigned |
| ASD | Illinois | Blue-Cross Blue-Shield of Illinois |
| ASE | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| ASF | Illinois | Blue-Cross Blue-Shield of Illinois |
| ASG | New York | Excellus Blue-Cross Blue-Shield of New York |
| ASH | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| ASI | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| ASJ | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| ASK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| ASL | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| ASM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ASN | - | Unallocated/Not Assigned |
| ASO | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| ASP | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| ASQ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| ASR | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| ASS | - | Unallocated/Not Assigned |
| AST | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| ASU | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| ASV | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ASW | - | Unallocated/Not Assigned |
| ASX | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| ASY | Michigan | Blue-Cross Blue-Shield of Michigan |
| ASZ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ATA | Illinois | Blue-Cross Blue-Shield of Illinois |
| ATB | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| ATC | Michigan | Blue-Cross Blue-Shield of Michigan |
| ATD | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| ATE | New York | Empire Blue-Cross Blue-Shield of New York |
| ATF | - | Unallocated/Not Assigned |
| ATG | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ATH | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| ATI | Alabama | Blue-Cross Blue-Shield of Alabama |
| ATJ | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| ATK | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| ATL | - | Unallocated/Not Assigned |
| ATM | Maine | Anthem Blue-Cross Blue-Shield of Maine |
| ATN | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| ATO | Illinois | Blue-Cross Blue-Shield of Illinois |
| ATP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| ATQ | California | Blue-Shield of California |
| ATR | California | Anthem Blue-Cross |
| ATS | Illinois | Blue-Cross Blue-Shield of Illinois |
| ATT | - | Unallocated/Not Assigned |
| ATU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| ATV | Illinois | Blue-Cross Blue-Shield of Illinois |
| ATW | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| ATX | - | Unallocated/Not Assigned |
| ATY | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| ATZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| AUA | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| AUB | Michigan | Blue-Cross Blue-Shield of Michigan |
| AUC | - | Unallocated/Not Assigned |
| AUD | - | Unallocated/Not Assigned |
| AUE | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| AUF | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AUG | Michigan | Blue-Cross Blue-Shield of Michigan |
| AUH | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| AUI | - | Unallocated/Not Assigned |
| AUJ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AUK | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| AUL | New York | Empire Blue-Cross Blue-Shield of New York |
| AUM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AUN | - | Unallocated/Not Assigned |
| AUO | - | Unallocated/Not Assigned |
| AUP | Michigan | Blue-Cross Blue-Shield of Michigan |
| AUQ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AUR | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AUS | California | Blue-Shield of California |
| AUT | Florida | Florida-Blue |
| AUU | - | Unallocated/Not Assigned |
| AUV | Michigan | Blue-Cross Blue-Shield of Michigan |
| AUW | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| AUX | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AUY | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| AUZ | Texas | Blue-Cross Blue-Shield of Texas |
| AVA | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| AVB | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AVC | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AVD | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| AVE | New York | Empire Blue-Cross Blue-Shield of New York |
| AVF | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| AVG | New Mexico | Blue-Cross Blue-Shield of New Mexico |
| AVH | - | Unallocated/Not Assigned |
| AVI | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| AVJ | - | Unallocated/Not Assigned |
| AVK | California | Blue-Shield of California |
| AVL | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| AVM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AVN | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| AVO | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| AVP | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AVQ | - | Unallocated/Not Assigned |
| AVR | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AVS | - | Unallocated/Not Assigned |
| AVT | California | Anthem Blue-Cross |
| AVU | - | Unallocated/Not Assigned |
| AVV | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| AVW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AVX | New York | Empire Blue-Cross Blue-Shield of New York |
| AVY | Texas | Blue-Cross Blue-Shield of Texas |
| AVZ | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| AWA | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| AWB | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| AWC | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| AWD | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| AWE | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| AWF | Illinois | Blue-Cross Blue-Shield of Illinois |
| AWG | - | Unallocated/Not Assigned |
| AWH | - | Unallocated/Not Assigned |
| AWI | Alabama | Blue-Cross Blue-Shield of Alabama |
| AWJ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| AWK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| AWL | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| AWM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| AWN | Illinois | Blue-Cross Blue-Shield of Illinois |
| AWO | Illinois | Blue-Cross Blue-Shield of Illinois |
| AWP | California | Anthem Blue-Cross |
| AWQ | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| AWR | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| AWS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| AWT | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| AWU | - | Unallocated/Not Assigned |
| AWV | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| AWW | Alabama | Blue-Cross Blue-Shield of Alabama |
| AWX | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| AWY | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| AWZ | Alabama | Blue-Cross Blue-Shield of Alabama |
| AXA | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| AXB | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| AXC | Arkansas | Arkansas Blue-Cross Blue-Shield |
| AXD | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AXE | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| AXF | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AXG | Florida | Florida-Blue |
| AXH | - | Unallocated/Not Assigned |
| AXI | - | Unallocated/Not Assigned |
| AXJ | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| AXK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AXL | Michigan | Blue-Cross Blue-Shield of Michigan |
| AXM | Illinois | Blue-Cross Blue-Shield of Illinois |
| AXN | - | Unallocated/Not Assigned |
| AXO | California | Blue-Shield of California |
| AXP | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AXQ | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| AXR | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| AXS | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AXT | Illinois | Blue-Cross Blue-Shield of Illinois |
| AXU | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AXV | Illinois | Blue-Cross Blue-Shield of Illinois |
| AXW | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AXX | Alabama | Blue-Cross Blue-Shield of Alabama |
| AXY | - | Unallocated/Not Assigned |
| AXZ | - | Unallocated/Not Assigned |
| AYA | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AYB | California | Blue-Shield of California |
| AYC | Texas | Blue-Cross Blue-Shield of Texas |
| AYD | Florida | Florida-Blue |
| AYE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| AYF | Illinois | Blue-Cross Blue-Shield of Illinois |
| AYG | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| AYH | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AYI | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| AYJ | California | Anthem Blue-Cross |
| AYK | California | Anthem Blue-Cross |
| AYL | - | Unallocated/Not Assigned |
| AYM | - | Unallocated/Not Assigned |
| AYN | Alabama | Blue-Cross Blue-Shield of Alabama |
| AYO | - | Unallocated/Not Assigned |
| AYP | - | Unallocated/Not Assigned |
| AYQ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AYR | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| AYS | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| AYT | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| AYU | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AYV | - | Unallocated/Not Assigned |
| AYW | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| AYX | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| AYY | California | Blue-Shield of California |
| AYZ | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| AZA | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| AZB | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| AZC | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| AZD | - | Unallocated/Not Assigned |
| AZE | Illinois | Blue-Cross Blue-Shield of Illinois |
| AZF | Mississippi | Blue-Cross Blue-Shield of Mississippi |
| AZG | - | Unallocated/Not Assigned |
| AZH | Texas | Blue-Cross Blue-Shield of Texas |
| AZI | - | Unallocated/Not Assigned |
| AZJ | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| AZK | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| AZL | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| AZM | - | Unallocated/Not Assigned |
| AZN | New York | Excellus Blue-Cross Blue-Shield of New York |
| AZO | California | Blue-Shield of California |
| AZP | - | Unallocated/Not Assigned |
| AZQ | - | Unallocated/Not Assigned |
| AZR | - | Unallocated/Not Assigned |
| AZS | California | Blue-Shield of California |
| AZT | California | Blue-Shield of California |
| AZU | California | Anthem Blue-Cross |
| AZV | California | Anthem Blue-Cross |
| AZW | Illinois | Blue-Cross Blue-Shield of Illinois |
| AZX | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| AZY | California | Blue-Shield of California |
| AZZ | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
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