BCBS Prefix Lookup AAA – AZZ
List of BCBS Prefixes AAA to AZZ
This list of bcbs prefixes includes both alpha prefixes and alpha numeric prefixes. We continue to add additional prefixes as we find them along with the blue cross blue shield provider phone number. Remember that each table has a search box at the top so it’s not necessary to page through the list of bc prefixes to find the one you need. Just enter the bc prefix in the search box to find it quickly. We appreciate your patience and support as we update our bcbs prefix lists.
| BCBS Prefix List | BCBS Plan Name |
|---|---|
| A2T | Premera Blue Cross |
| A7D | Carefirst BCBS |
| A7K | BCBS of Illinois |
| A9C | Anthem BCBS of Connecticut |
| A9E | BCBS of Illinois |
| A9P | Premera Blue Cross |
| 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 | Blue Shield of California |
| AAI | BCBS of Michigan |
| AAJ | Regence BCBS of Washington |
| AAK | Anthem Blue Cross of California |
| AAL | Wellmark BCBS |
| AAM | BCBS of Alabama |
| AAN | Anthem BCBS of Ohio |
| AAO | Blue Shield of California |
| AAP | BCBS of Tennessee |
| AAQ | Anthem BCBS of Kentucky |
| AAR | Carefirst BCBS of Maryland |
| AAS | Anthem Blue Cross of California |
| AAT | Anthem Blue Cross of California |
| AAU | Anthem BCBS of Ohio |
| 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 | Anthem BCBS of Colorado |
| ABX | Wellmark BCBS |
| ABY | Carefirst BCBS |
| ABZ | Carefirst BCBS of Maryland |
| ACA | BCBS of Alabama |
| ACB | Unassigned Prefix |
| 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 | Blue Shield of California |
| ACV | Carefirst BCBS of Maryland |
| ACW | Anthem Blue Cross of California |
| ACX | BCBS of Illinois |
| ACY | Anthem Blue Cross of California |
| ACZ | Anthem BCBS of Georgia |
| ADA | Anthem Blue Cross of California |
| ADB | Anthem BCBS of Missouri |
| ADC | BCBS of Illinois |
| ADD | Anthem BCBS of Indiana |
| ADE | BCBS of Illinois |
| ADF | BCBS of Western New York |
| ADG | Anthem BCBS of Missouri |
| ADH | BCBS of Delaware |
| ADI | Anthem Blue Cross of California |
| ADJ | BCBS of Nebraska |
| ADK | Anthem Blue Cross of California |
| ADL | Anthem BCBS of Ohio |
| ADM | BCBS of Illinois |
| ADN | Anthem BCBS of Missouri |
| 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 |
| ADV | BCBS of Illinois |
| 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 BCBS of Ohio |
| AEH | Carefirst Administrators |
| AEI | Anthem BCBS of Virginia |
| AEJ | Horizon BCBS of New Jersey |
| AEK | Anthem BCBS of Ohio |
| AEL | Anthem Blue Cross of California |
| AEM | Carefirst BCBS of Maryland |
| AEN | Highmark BCBS |
| AEO | BCBS of Massachusetts |
| 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 | Anthem Blue Cross of California |
| AFS | Unassigned Prefix |
| 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 | Anthem BCBS of Ohio |
| AGA | Anthem Blue Cross of California |
| AGB | Excellus BCBS of New York |
| AGC | BCBS of Kansas City |
| AGD | Anthem BCBS of Missouri |
| AGE | Anthem BCBS of Ohio |
| AGF | Independence BCBS |
| AGG | Anthem BCBS of Ohio |
| AGH | Anthem Blue Cross of California |
| AGI | Anthem BCBS of Nevada |
| AGJ | Blue Cross of Idaho |
| AGK | BCBS of Minnesota |
| AGL | Premera Blue Cross |
| AGM | Blue Cross of Idaho |
| AGN | Carefirst Administrators |
| AGO | Unassigned Prefix |
| AGP | BCBS of Minnesota |
| AGQ | Carefirst Administrators |
| AGR | Anthem BCBS of Colorado |
| AGS | Anthem Blue Cross of California |
| AGT | Blue Shield of California |
| AGU | Carefirst BCBS of Maryland |
| AGV | BCBS of South Carolina |
| AGW | BCBS of Massachusetts |
| AGX | Anthem BCBS of Virginia |
| AGY | BCBS of South Carolina |
| AGZ | BCBS of Massachusetts |
| AHA | BCBS of Illinois |
| AHB | Anthem BCBS of Ohio |
| AHC | Premera Blue Cross |
| AHD | BCBS of South Carolina |
| AHE | Blue Shield of California |
| AHF | Blue Shield of California |
| AHG | BCBS of North Carolina |
| AHH | Anthem BCBS of Wisconsin |
| AHI | BCBS of Massachusetts |
| 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 | Anthem BCBS of Wisconsin |
| AHU | Capital Blue Cross |
| AHV | Anthem BCBS of Ohio |
| AHW | BCBS of Vermont |
| AHX | Anthem BCBS of Ohio |
| 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 BCBS of Ohio |
| AIE | Carefirst BCBS |
| AIF | BCBS of Michigan |
| AIG | BCBS of Michigan |
| AIH | BCBS of Wisconsin |
| AII | BCBS of Louisiana |
| AIJ | Empire BCBS of New York |
| AIK | BCBS of Michigan |
| AIL | BCBS of Wisconsin |
| 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 | Carefirst BCBS |
| AIW | BCBS of Illinois |
| AIX | BCBS of South Carolina |
| AIY | Anthem BCBS of Indiana |
| AIZ | BCBS of South Carolina |
| AJA | BCBS of South Carolina |
| AJB | BCBS of South Carolina |
| AJC | Blue Shield of California |
| AJD | Anthem BCBS of Ohio |
| AJE | BCBS of South Carolina |
| AJF | Highmark BCBS |
| AJG | BCBS of Illinois |
| AJH | BCBS of South Carolina |
| 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 BCBS of Ohio |
| AJP | BCBS of Michigan |
| AJQ | Anthem BCBS of California |
| AJR | BCBS of Michigan |
| AJS | Anthem BCBS of Indiana |
| AJT | BCBS of Michigan |
| AJU | Carefirst BCBS |
| AJV | BCBS of South Carolina |
| AJW | Premera Blue Cross |
| AJX | Premera Blue Cross |
| AJY | BCBS of South Carolina |
| AJZ | Unassigned Prefix |
| AKA | BCBS of Massachusetts |
| AKB | Anthem BCBS of Ohio |
| AKC | Carefirst BCBS of Maryland |
| AKD | BCBS of Minnesota |
| AKE | Anthem BCBS of Ohio |
| AKF | Premera Blue Cross |
| AKG | Unassigned Prefix |
| AKH | Anthem BCBS of Ohio |
| AKI | Anthem BCBS of Nevada |
| AKJ | Regence BCBS of Oregon |
| AKK | Anthem BCBS of Ohio |
| AKL | BCBS of Tennessee |
| AKM | BCBS of Michigan |
| AKN | Anthem Blue Cross of California |
| AKO | BCBS of South Carolina |
| AKP | BCBS of Michigan |
| AKQ | Empire BCBS |
| AKR | Regence BCBS of Oregon |
| AKS | Anthem Blue Cross of California |
| AKT | Anthem Blue Cross of California |
| AKU | Unassigned Prefix |
| AKV | Empire BCBS |
| 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 BCBS of Ohio |
| ALJ | Regence BCBS of Oregon |
| ALK | Premera Blue Cross |
| ALL | Anthem BCBS of Ohio |
| ALM | Anthem BCBS of Ohio |
| ALN | Highmark BCBS |
| ALO | Wellmark BCBS |
| ALP | Anthem BCBS of Connecticut |
| ALQ | Anthem Blue Cross of California |
| ALR | Anthem BCBS of Connecticut |
| ALS | BCBS of Michigan |
| ALT | BCBS of Illinois |
| ALU | Highmark BCBS |
| ALV | Premera Blue Cross |
| ALW | Blue Cross of Idaho |
| ALX | Anthem BCBS of Ohio |
| ALY | Unassigned Prefix |
| ALZ | Highmark BCBS |
| AMA | BCBS of Illinois |
| AMB | Anthem BCBS of Nevada |
| AMC | BCBS of Tennessee |
| AMD | Anthem BCBS of Indiana |
| AME | Blue Shield of California |
| AMF | BCBS of Georgia |
| AMG | BCBS of Illinois |
| AMH | Unassigned Prefix |
| AMI | Blue Cross of Idaho |
| AMJ | Anthem BCBS of Ohio |
| AMK | Premera Blue Cross |
| AML | Wellmark BCBS |
| AMM | Highmark BCBS |
| AMN | Blue Cross of Idaho |
| AMO | BCBS of North Carolina |
| AMP | Blue Shield of California |
| AMQ | Highmark BCBS |
| AMR | BCBS of Texas |
| AMS | BCBS of Illinois |
| AMT | Blue Cross of Idaho |
| AMU | BCBS of Rhose Island |
| AMV | Anthem BCBS of Wisconsin |
| AMW | Carefirst BCBS of Maryland |
| AMX | BCBS of North Carolina |
| AMY | Anthem BCBS of Kentucky |
| AMZ | Anthem BCBS of Wisconsin |
| ANA | BCBS of Massachusetts |
| ANB | Anthem BCBS of Wisconsin |
| ANC | BCBS of Nebraska |
| AND | BCBS of Illinois |
| ANE | Regence Blue Cross Blue Shield of Utah |
| ANF | BCBS of Nebraska |
| ANG | Unassigned Prefix |
| ANH | Anthem BCBS of Ohio |
| ANI | BCBS of Florida |
| ANJ | Anthem BCBS of California |
| ANK | Anthem BCBS of Wisconsin |
| ANL | Blue Shield of California |
| ANM | Unassigned Prefix |
| ANN | Anthem BCBS of Ohio |
| ANO | BCBS of Illinois |
| ANP | Anthem BCBS of Nevada |
| ANQ | BCBS of Florida |
| ANR | Carefirst BCBS of Maryland |
| ANS | Anthem Blue Cross of California |
| ANT | Anthem BCBS of Ohio |
| ANU | Anthem BCBS of Ohio |
| ANV | Carefirst Administrators |
| ANW | Anthem BCBS of Missouri |
| ANX | Anthem BCBS of Wisconsin |
| ANY | BCBS of Illinois |
| ANZ | Wellmark BCBS |
| AOA | Anthem BCBS of Ohio |
| AOB | BCBS of Michigan |
| AOC | Anthem BCBS of Missouri |
| AOD | BCBS of Western New York |
| AOE | Anthem Blue Cross of California |
| AOF | Wellmark BCBS |
| AOG | BCBS of Western New York |
| AOH | BCBS of Western New York |
| AOI | BCBS of Texas |
| AOJ | BCBS of Western New York |
| AOK | Regence BCBS of Oregon |
| AOL | Unassigned Prefix |
| AOM | Highmark BCBS |
| AON | BCBS of Illinois |
| AOO | BCBS of Minnesota |
| AOP | Blue Shield of Northeastern New York |
| AOQ | BCBS of Western New York |
| AOR | BCBS of Western New York |
| AOS | BCBS of Tennessee |
| AOT | Anthem BCBS of Missouri |
| AOU | BCBS of Western New York |
| AOV | BCBS of Illinois |
| AOW | BCBS of Michigan |
| AOX | BCBS of North Carolina |
| AOY | Blue Cross of Idaho |
| AOZ | Anthem Blue Cross of California |
| APA | Wellmark BCBS |
| APB | BCBS of Delaware |
| APC | Anthem BCBS of Ohio |
| APD | BCBS of Illinois |
| APE | Regence BCBS of Oregon |
| APF | Unassigned Prefix |
| APG | Anthem BCBS of Connecticut |
| APH | Anthem BCBS of Connecticut |
| API | BCBS of Western New York |
| APJ | BCBS of Massachusetts |
| APK | BCBS of Arizona |
| APL | Unassigned Prefix |
| APM | Highmark BCBS |
| APN | Anthem BCBS of Ohio |
| APO | Anthem Blue Cross of California |
| APP | Wellmark BCBS |
| APQ | Independence Blue Cross |
| APR | BCBS of Delaware |
| APS | BCBS of South Carolina |
| APT | BCBS of Delaware |
| APU | BCBS of Minnesota |
| APV | BCBS of Illinois |
| APW | BCBS of Massachusetts |
| APX | Blue Shield of California |
| APY | Highmark BCBS |
| APZ | BCBS of Arizona |
| AQA | Premera Blue Cross |
| AQB | Premera Blue Cross |
| AQC | Anthem BCBS of Ohio |
| AQD | Anthem BCBS of Ohio |
| AQE | Blue Cross of Idaho |
| AQF | Wellmark BCBS |
| AQG | Anthem BCBS of Ohio |
| AQH | BCBS of Massachusetts |
| AQI | Anthem BCBS of Kentucky |
| AQJ | Premera Blue Cross |
| AQK | BCBS of Minnesota |
| 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 | Blue Shield of California |
| AQT | Premera Blue Cross |
| AQU | BCBS of Kansas City |
| AQV | Regence BCBS of Utah |
| AQW | Empire BCBS of New York |
| AQX | Empire BCBS |
| AQY | BCBS of Alabama |
| AQZ | BCBS of Illinois |
| ARA | BCBS of Western New York |
| ARB | BCBS of Texas |
| ARC | Anthem BCBS of California |
| ARD | BCBS of New Mexico |
| ARE | Anthem BCBS of Georgia |
| ARF | Blue Shield of California |
| ARG | Highmark BCBS |
| ARH | Carefirst Administrators |
| ARI | Carefirst BCBS of Maryland |
| ARJ | Anthem BCBS of Missouri |
| ARK | Anthem BCBS of Colorado |
| ARL | Carefirst Administrators |
| ARM | Blue Shield of California |
| ARN | BCBS of Alabama |
| ARO | Highmark BCBS |
| ARP | BCBS of Illinois |
| ARQ | Anthem BCBS of Georgia |
| ARR | Independence Blue Cross |
| ARS | Carefirst BCBS of Maryland |
| ART | BCBS of Minnesota |
| ARU | BCBS of Texas |
| ARV | Carefirst BCBS of Maryland |
| ARW | Anthem BCBS of Missouri |
| 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 | BCBS of Illinois |
| ASE | Independence Blue Cross |
| ASF | BCBS of Illinois |
| ASG | Excellus BCBS of New York |
| ASH | Anthem BCBS of Ohio |
| ASI | BCBS of South Carolina |
| ASJ | Anthem BCBS of Ohio |
| ASK | Wellmark BCBS |
| ASL | Horizon BCBS of New Jersey |
| ASM | Carefirst BCBS |
| ASN | Unassigned Prefix |
| ASO | Anthem BCBS of Ohio |
| ASP | BCBS of Massachusetts |
| ASQ | Anthem BCBS of Wisconsin |
| ASR | Independence Blue Cross |
| ASS | BCBS of Massachusetts |
| 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 BCBS of Ohio |
| ATA | BCBS of Illinois |
| ATB | Wellmark BCBS |
| ATC | BCBS of Michigan |
| ATD | BCBS of Texas |
| ATE | Empire BCBS |
| ATF | Unassigned Prefix |
| ATG | Premera Blue Cross |
| ATH | BCBS of Massachusetts |
| ATI | BCBS of Alabama |
| ATJ | Anthem BCBS of Connecticut |
| ATK | Carefirst BCBS of Maryland |
| ATL | Carefirst Administrators |
| ATM | Anthem BCBS of Connecticut |
| ATN | Anthem BCBS of Missouri |
| 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 | Anthem BCBS of Virginia |
| ATX | Unassigned Prefix |
| ATY | BCBS of South Carolina |
| ATZ | Unassigned Prefix |
| AUA | Independence Blue Cross |
| AUB | BCBS of Michigan |
| AUC | Unassigned Prefix |
| AUD | BCBS of Illinois |
| AUE | Highmark BCBS |
| AUF | Highmark BCBS |
| AUG | BCBS of Michigan |
| AUH | Highmark BCBS |
| AUI | Unassigned Prefix |
| AUJ | Anthem BCBS of Wisconsin |
| AUK | Independence Blue Cross |
| AUL | Empire BCBS |
| AUM | Carefirst BCBS of Maryland |
| AUN | Unassigned Prefix |
| AUO | BCBS of Florida |
| AUP | BCBS of Michigan |
| AUQ | Anthem BCBS of Wisconsin |
| AUR | Anthem BCBS of Wisconsin |
| AUS | Blue Shield of California |
| AUT | BCBS of Florida |
| AUU | BCBS of South Carolina |
| AUV | BCBS of Michigan |
| AUW | BCBS of Delaware |
| AUX | BCBS of Massachusetts |
| AUY | Wellmark BCBS |
| 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 | BCBS of Western New York |
| 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 |
| AVQ | Blue Shield of California |
| 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 | Anthem BCBS of Connecticut |
| AWD | BCBS of Minnesota |
| AWE | Anthem BCBS of Connecticut |
| AWF | BCBS of Illinois |
| AWG | Unassigned Prefix |
| AWH | Horizon BCBS of New Jersey |
| AWI | BCBS of Alabama |
| AWJ | Premera Blue Cross |
| AWK | Wellmark BCBS |
| AWL | Anthem BCBS of Connecticut |
| AWM | Highmark BCBS |
| AWN | BCBS of Illinois |
| AWO | BCBS of Illinois |
| AWP | Anthem Blue Cross of California |
| AWQ | Regence BCBS of Oregon |
| AWR | Highmark BCBS |
| AWS | Wellmark BCBS |
| AWT | Anthem BCBS of Connecticut |
| AWU | Unassigned Prefix |
| AWV | Anthem BCBS of Virginia |
| AWW | BCBS of Alabama |
| AWX | Anthem BCBS of Ohio |
| AWY | Anthem of Connecticut |
| AWZ | BCBS of Alabama |
| AXA | BCBS of Nebraska |
| AXB | BCBS of Delaware |
| AXC | Arkansas BCBS |
| AXD | BCBS of Massachusetts |
| AXE | Anthem BCBS of Ohio |
| 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 | BCBS of Illinois |
| AXN | Carefirst BCBS of Maryland |
| AXO | Blue Shield of California |
| AXP | BCBS of Massachusetts |
| AXQ | BCBS of Minnesota |
| AXR | BCBS of South Carolina |
| AXS | BCBS of Massachusetts |
| AXT | BCBS of Illinois |
| 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 | BCBS of Illinois |
| AYG | BCBS of Illinois |
| AYH | BCBS of Massachusetts |
| AYI | BCBS of Tennessee |
| AYJ | Anthem Blue Cross of California |
| AYK | Anthem Blue Cross of California |
| AYL | Anthem BCBS of Ohio |
| AYM | Highmark BCBS |
| AYN | BCBS of Alabama |
| AYO | Unassigned Prefix |
| AYP | BCBS of Minnesota |
| AYQ | BCBS of Massachusetts |
| AYR | Highmark BCBS |
| AYS | Premera Blue Cross |
| AYT | Anthem BCBS of Nevada |
| AYU | Anthem BCBS of Wisconsin |
| AYV | Wellmark BCBS |
| AYW | BCBS of Western New York |
| AYX | BCBS of North Carolina |
| AYY | Blue Shield of California |
| AYZ | BCBS of North Carolina |
| AZA | BCBS of North Carolina |
| AZB | Anthem BCBS of Connecticut |
| AZC | Anthem BCBS of Colorado |
| AZD | BCBS of Texas |
| AZE | BCBS of Illinois |
| AZF | BCBS of Mississippi |
| AZG | Unassigned Prefix |
| AZH | BCBS of Texas |
| AZI | BCBS of Alabama |
| AZJ | Anthem BCBS of Connecticut |
| AZK | BCBS of Massachusetts |
| AZL | Anthem BCBS of Connecticut |
| AZM | BCBS of Texas |
| AZN | Excellus BCBS of New York |
| AZO | Blue Shield of California |
| AZP | Unassigned Prefix |
| AZQ | Blue Cross of Idaho |
| AZR | BCBS of Wyoming |
| AZS | BCBS of Massachusetts |
| AZT | Blue Shield of California |
| AZU | Anthem Blue Cross of California |
| AZV | Anthem Blue Cross of California |
| AZW | BCBS of Illinois |
| AZX | Regence Blue Cross Blue Shield of Oregon |
| AZY | Blue Shield of California |
| AZZ | Carefirst Administrators |