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