BCBS Prefix List YAA to YZZ

The BCBS Prefix List YAA to YZZ is a valuable resource for healthcare providers, billing specialists, and administrative staff managing Blue Cross Blue Shield insurance claims. Each BCBS member ID begins with a unique three-letter prefix. Prefixes in the YAA to YZZ range typically represent group health plans, PPO networks, and employer-sponsored insurance policies. These prefixes help identify the correct BCBS company and regional office responsible for efficient claims processing.

Using the correct prefix is essential for smooth claim handling. For instance, a member ID starting with “YBC” corresponds to a specific BCBS division or state plan. Submitting claims without verifying the prefix can result in delays, denials, or claims being routed incorrectly. Billing and front-office teams must always confirm the prefix before submitting claims to avoid these issues.

These prefixes also assist during eligibility verification. Staff can enter the prefix into BCBS online portals or payer systems to verify coverage status, copays, deductibles, and prior authorization requirements. Verifying benefits ahead of the patient’s visit reduces claim denials and improves patient satisfaction.

Blue Cross Blue Shield operates through a network of independent companies across various states and regions. Each prefix corresponds directly to one of these companies. The BCBS Prefix List YAA to YZZ provides a reliable way to match member IDs with the correct payer.

Maintaining an updated prefix list helps billing teams increase accuracy and efficiency. It reduces errors, speeds up reimbursements, and lowers administrative burden. Medical offices handling many BCBS claims benefit greatly from using this list. Proper use of prefixes leads to smoother revenue cycle management and better billing operations.

BCBS Prefix List YAA to YZZ	State Lookup	BCBS Company
YAA	Connecticut	Anthem Blue-Cross Blue-Shield of Connecticut
YAB	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YAC	Kentucky	Anthem Blue-Cross Blue-Shield of Kentucky
YAD	Rhode Island	Blue-Cross Blue-Shield of Rhode Island
YAE	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YAF	Colorado	Anthem Blue-Cross Blue-Shield of Colorado
YAG	Mississippi	Blue-Cross Blue-Shield of Mississippi
YAH	Connecticut	Anthem Blue-Cross Blue-Shield of Connecticut
YAI	Mississippi	Blue-Cross Blue-Shield of Mississippi
YAJ	Alabama	Blue-Cross Blue-Shield of Alabama
YAK	-	Unallocated/Not Assigned
YAL	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YAM	-	Unallocated/Not Assigned
YAN	-	Unallocated/Not Assigned
YAO	-	Unallocated/Not Assigned
YAP	Minnesota	Blue-Cross Blue-Shield of Minnesota
YAQ	Mississippi	Blue-Cross Blue-Shield of Mississippi
YAR	-	Unallocated/Not Assigned
YAS	Mississippi	Blue-Cross Blue-Shield of Mississippi
YAT	California	Blue-Shield of California
YAU	Mississippi	Blue-Cross Blue-Shield of Mississippi
YAV	Tennessee	Blue-Cross Blue-Shield of Tennessee
YAW	-	Unallocated/Not Assigned
YAX	Mississippi	Blue-Cross Blue-Shield of Mississippi
YAY	South Dakota/Iowa	Wellmark Blue-Cross Blue-Shield
YAZ	New York	Empire Blue-Cross Blue-Shield of New York
YBA	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBB	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBC	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBD	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBE	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBF	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBG	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBH	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBI	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YBJ	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBK	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YBL	Kentucky	Anthem Blue-Cross Blue-Shield of Kentucky
YBM	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBN	New York	Empire Blue-Cross Blue-Shield of New York
YBO	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YBP	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBQ	California	Anthem Blue-Cross
YBR	California	Blue-Shield of California
YBS	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBT	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBU	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBV	New York	Empire Blue-Cross Blue-Shield of New York
YBW	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBX	Kansas City	Blue-Cross Blue-Shield of Kansas City
YBY	Minnesota	Blue-Cross Blue-Shield of Minnesota
YBZ	-	Unallocated/Not Assigned
YCA	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YCB	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YCC	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YCD	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YCE	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YCF	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YCG	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YCH	-	Unallocated/Not Assigned
YCI	Pennsylvania	Capital Blue-Cross of Pennsylvania
YCJ	Kentucky	Anthem Blue-Cross Blue-Shield of Kentucky
YCK	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YCL	California	Anthem Blue-Cross
YCM	Wisconsin	Anthem Blue-Cross Blue-Shield of Wisconsin
YCN	South Dakota/Iowa	Wellmark Blue-Cross Blue-Shield
YCO	Minnesota	Blue-Cross Blue-Shield of Minnesota
YCP	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YCQ	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YCR	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YCS	Colorado	Anthem Blue-Cross Blue-Shield of Colorado
YCT	Connecticut	Anthem Blue-Cross Blue-Shield of Connecticut
YCU	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YCV	-	Unallocated/Not Assigned
YCW	Idaho	Blue-Cross of Idaho
YCX	Georgia	Anthem Blue-Cross Blue-Shield of Georgia
YCY	California	Anthem Blue-Cross
YCZ	New York	Empire Blue-Cross Blue-Shield of New York
YDA	-	Unallocated/Not Assigned
YDB	Nebraska	Blue-Cross Blue-Shield of Nebraska
YDC	Montana	Blue-Cross Blue-Shield of Montana
YDD	Montana	Blue-Cross Blue-Shield of Montana
YDE	Montana	Blue-Cross Blue-Shield of Montana
YDF	Montana	Blue-Cross Blue-Shield of Montana
YDG	Montana	Blue-Cross Blue-Shield of Montana
YDH	California	Anthem Blue-Cross
YDI	-	Unallocated/Not Assigned
YDJ	Montana	Blue-Cross Blue-Shield of Montana
YDK	Montana	Blue-Cross Blue-Shield of Montana
YDL	Montana	Blue-Cross Blue-Shield of Montana
YDM	Montana	Blue-Cross Blue-Shield of Montana
YDN	Montana	Blue-Cross Blue-Shield of Montana
YDO	Rhode Island	Blue-Cross Blue-Shield of Rhode Island
YDP	Kentucky	Anthem Blue-Cross Blue-Shield of Kentucky
YDQ	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YDR	Montana	Blue-Cross Blue-Shield of Montana
YDS	Montana	Blue-Cross Blue-Shield of Montana
YDT	Montana	Blue-Cross Blue-Shield of Montana
YDU	Montana	Blue-Cross Blue-Shield of Montana
YDV	Montana	Blue-Cross Blue-Shield of Montana
YDW	Alaska	Premera Blue-Cross Blue-Shield of Alaska
YDX	Texas	Blue-Cross Blue-Shield of Texas
YDY	New York	Empire Blue-Cross Blue-Shield of New York
YDZ	New York (Western)	Blue-Cross Blue-Shield of Western New York
YEA	-	Unallocated/Not Assigned
YEB	California	Blue-Shield of California
YEC	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YED	Nebraska	Blue-Cross Blue-Shield of Nebraska
YEE	California	Blue-Shield of California
YEF	Nebraska	Blue-Cross Blue-Shield of Nebraska
YEG	Nebraska	Blue-Cross Blue-Shield of Nebraska
YEH	Nebraska	Blue-Cross Blue-Shield of Nebraska
YEI	North Dakota	Blue-Cross Blue-Shield of North Dakota
YEJ	-	Unallocated/Not Assigned
YEK	Nebraska	Blue-Cross Blue-Shield of Nebraska
YEL	Minnesota	Blue-Cross Blue-Shield of Minnesota
YEM	Nebraska	Blue-Cross Blue-Shield of Nebraska
YEN	-	Unallocated/Not Assigned
YEO	North Dakota	Blue-Cross Blue-Shield of North Dakota
YEP	North Dakota	Blue-Cross Blue-Shield of North Dakota
YEQ	Nebraska	Blue-Cross Blue-Shield of Nebraska
YER	North Dakota	Blue-Cross Blue-Shield of North Dakota
YES	Nebraska	Blue-Cross Blue-Shield of Nebraska
YET	Illinois	Blue-Cross Blue-Shield of Illinois
YEU	-	Unallocated/Not Assigned
YEV	California	Blue-Shield of California
YEW	New York	Empire Blue-Cross Blue-Shield of New York
YEX	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YEY	New York	Empire Blue-Cross Blue-Shield of New York
YEZ	Nebraska	Blue-Cross Blue-Shield of Nebraska
YFA	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFB	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFC	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFD	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFE	Illinois	Blue-Cross Blue-Shield of Illinois
YFF	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFG	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFH	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFI	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFJ	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFK	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFL	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFM	Nebraska	Blue-Cross Blue-Shield of Nebraska
YFN	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFO	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFP	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFQ	-	Unallocated/Not Assigned
YFR	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFS	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YFT	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFU	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFV	Connecticut	Anthem Blue-Cross Blue-Shield of Connecticut
YFW	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFX	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFY	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YFZ	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YGA	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGB	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGC	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGD	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGE	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGF	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGG	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGH	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGI	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGJ	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGK	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGL	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGM	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGN	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGO	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGP	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGQ	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGR	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGS	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGT	-	Unallocated/Not Assigned
YGU	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGV	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGW	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGX	New Hampshire	Anthem Blue-Cross Blue-Shield of New Hampshire
YGY	California	Blue-Shield of California
YGZ	Georgia	Anthem Blue-Cross Blue-Shield of Georgia
YHA	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHB	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHC	-	Unallocated/Not Assigned
YHD	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHE	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHF	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHG	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHH	Connecticut	Anthem Blue-Cross Blue-Shield of Connecticut
YHI	North Carolina	Blue-Cross Blue-Shield of North Carolina
YHJ	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YHK	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YHL	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHM	South Dakota/Iowa	Wellmark Blue-Cross Blue-Shield
YHN	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHO	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHP	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHQ	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHR	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHS	South Dakota/Iowa	Wellmark Blue-Cross Blue-Shield
YHT	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YHU	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YHV	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YHW	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHX	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHY	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YHZ	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YIA	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIB	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIC	New Mexico	Blue-Cross Blue-Shield of New Mexico
YID	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIE	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIF	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIG	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIH	New Mexico	Blue-Cross Blue-Shield of New Mexico
YII	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIJ	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIK	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIL	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIM	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIN	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIO	-	Unallocated/Not Assigned
YIP	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIQ	-	Unallocated/Not Assigned
YIR	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIS	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIT	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIU	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIV	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIW	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIX	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIY	New Mexico	Blue-Cross Blue-Shield of New Mexico
YIZ	New Mexico	Blue-Cross Blue-Shield of New Mexico
YJA	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJB	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJC	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJD	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJE	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJF	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJG	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJH	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJI	Maryland/District of Columbia/Northern Virginia	Carefirst Blue-Cross Blue-Shield
YJJ	Kansas City	Blue-Cross Blue-Shield of Kansas City
YJK	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJL	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJM	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJN	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJO	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJP	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJQ	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJR	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJS	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJT	Kansas City	Blue-Cross Blue-Shield of Kansas City
YJU	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJV	Kansas City	Blue-Cross Blue-Shield of Kansas City
YJW	Kansas City	Blue-Cross Blue-Shield of Kansas City
YJX	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJY	New York (Western)	Blue-Cross Blue-Shield of Western New York
YJZ	New York (Western)	Blue-Cross Blue-Shield of Western New York
YKA	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKB	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKC	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKD	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKE	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKF	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKG	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKH	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKI	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKJ	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKK	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKL	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKM	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKN	South Dakota/Iowa	Wellmark Blue-Cross Blue-Shield
YKO	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKP	South Dakota/Iowa	Wellmark Blue-Cross Blue-Shield
YKQ	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKR	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKS	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKT	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKU	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YKV	Nebraska	Blue-Cross Blue-Shield of Nebraska
YKW	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YKX	Colorado	Anthem Blue-Cross Blue-Shield of Colorado
YKY	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YKZ	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YLA	New York	Empire Blue-Cross Blue-Shield of New York
YLB	New York	Empire Blue-Cross Blue-Shield of New York
YLC	New York	Empire Blue-Cross Blue-Shield of New York
YLD	New York	Empire Blue-Cross Blue-Shield of New York
YLE	New York	Empire Blue-Cross Blue-Shield of New York
YLF	New York	Empire Blue-Cross Blue-Shield of New York
YLG	-	Unallocated/Not Assigned
YLH	New York	Empire Blue-Cross Blue-Shield of New York
YLI	Michigan	Blue-Cross Blue-Shield of Michigan
YLJ	New York	Empire Blue-Cross Blue-Shield of New York
YLK	New York	Empire Blue-Cross Blue-Shield of New York
YLL	New York	Empire Blue-Cross Blue-Shield of New York
YLM	New York	Empire Blue-Cross Blue-Shield of New York
YLN	New York	Empire Blue-Cross Blue-Shield of New York
YLO	New York	Empire Blue-Cross Blue-Shield of New York
YLP	New York	Empire Blue-Cross Blue-Shield of New York
YLQ	New York	Empire Blue-Cross Blue-Shield of New York
YLR	New York	Empire Blue-Cross Blue-Shield of New York
YLS BCBS Prefix	New York	Empire Blue-Cross Blue-Shield of New York
YLT	New York	Empire Blue-Cross Blue-Shield of New York
YLU	New York	Empire Blue-Cross Blue-Shield of New York
YLV	New York	Empire Blue-Cross Blue-Shield of New York
YLW	New York	Empire Blue-Cross Blue-Shield of New York
YLX	New York	Empire Blue-Cross Blue-Shield of New York
YLY	New York	Empire Blue-Cross Blue-Shield of New York
YLZ	New York	Empire Blue-Cross Blue-Shield of New York
YMA	Nebraska	Blue-Cross Blue-Shield of Nebraska
YMB	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YMC	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YMD	Delaware	Highmark Blue-Cross Blue-Shield of Delaware
YME	North Dakota	Blue-Cross Blue-Shield of North Dakota
YMF	Illinois	Blue-Cross Blue-Shield of Illinois
YMG	Minnesota	Blue-Cross Blue-Shield of Minnesota
YMH	-	Unallocated/Not Assigned
YMI	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YMJ	Alaska	Premera Blue-Cross Blue-Shield of Alaska
YMK	Alaska	Premera Blue-Cross Blue-Shield of Alaska
YML	Alaska	Premera Blue-Cross Blue-Shield of Alaska
YMM	-	Unallocated/Not Assigned
YMN	-	Unallocated/Not Assigned
YMO	Georgia	Anthem Blue-Cross Blue-Shield of Georgia
YMP	New York	Empire Blue-Cross Blue-Shield of New York
YMQ	California	Anthem Blue-Cross
YMR	Maryland/District of Columbia/Northern Virginia	Carefirst Blue-Cross Blue-Shield
YMS	California	Blue-Shield of California
YMT	Idaho	Blue-Cross of Idaho
YMU	California	Anthem Blue-Cross
YMV	Idaho	Blue-Cross of Idaho
YMW	Connecticut	Anthem Blue-Cross Blue-Shield of Connecticut
YMX	Alaska	Premera Blue-Cross of Alaska
YMY	California	Anthem Blue-Cross
YMZ	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YNA	California	Blue-Shield of California
YNB	New York	Excellus Blue-Cross Blue-Shield of New York
YNC	New York	Excellus Blue-Cross Blue-Shield of New York
YND	New York	Excellus Blue-Cross Blue-Shield of New York
YNE	New York	Excellus Blue-Cross Blue-Shield of New York
YNF	Minnesota	Blue-Cross Blue-Shield of Minnesota
YNG	New York	Excellus Blue-Cross Blue-Shield of New York
YNH	New York	Excellus Blue-Cross Blue-Shield of New York
YNI	New York	Excellus Blue-Cross Blue-Shield of New York
YNJ	New York	Excellus Blue-Cross Blue-Shield of New York
YNK	Illinois	Blue-Cross Blue-Shield of Illinois
YNL	New York	Excellus Blue-Cross Blue-Shield of New York
YNM	New York	Excellus Blue-Cross Blue-Shield of New York
YNN	Nebraska	Blue-Cross Blue-Shield of Nebraska
YNO	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YNP	Illinois	Blue-Cross Blue-Shield of Illinois
YNQ	Nebraska	Blue-Cross Blue-Shield of Nebraska
YNR	North Dakota	Blue-Cross Blue-Shield of North Dakota
YNS	New York	Excellus Blue-Cross Blue-Shield of New York
YNT	-	Unallocated/Not Assigned
YNU	Illinois	Blue-Cross Blue-Shield of Illinois
YNV	-	Unallocated/Not Assigned
YNW	California	Anthem Blue-Cross
YNX	Nebraska	Blue-Cross Blue-Shield of Nebraska
YNY	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YNZ	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YOA	California	Blue-Shield of California
YOB	New York (Western)	Blue-Cross Blue-Shield of Western New York
YOC	California	Blue-Shield of California
YOD	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YOE	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YOF	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YOG	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YOH	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YOI	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YOJ	Wisconsin	Anthem Blue-Cross Blue-Shield of Wisconsin
YOK	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YOL	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YOM	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YON	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YOO	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YOP	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YOQ	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YOR	Alaska	Premera Blue-Cross Blue-Shield of Alaska
YOS	Wisconsin	Anthem Blue-Cross Blue-Shield of Wisconsin
YOT	Rhode Island	Blue-Cross Blue-Shield of Rhode Island
YOU	California	Blue-Shield of California
YOV	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YOW	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YOX	Maryland/District of Columbia/Northern Virginia	Carefirst Blue-Cross Blue-Shield
YOY	Maryland/District of Columbia/Northern Virginia	Carefirst Blue-Cross Blue-Shield
YOZ	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YPA	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPB	Rhode Island	Blue-Cross Blue-Shield of Rhode Island
YPC	-	Unallocated/Not Assigned
YPD	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPE	-	Unallocated/Not Assigned
YPF	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPG	-	Unallocated/Not Assigned
YPH	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPI BCBS Prefix	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPJ	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPK	Rhode Island	Blue-Cross Blue-Shield of Rhode Island
YPL	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPM	-	Unallocated/Not Assigned
YPN	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPO	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPP	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPQ	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPR	-	Unallocated/Not Assigned
YPS BCBS Prefix	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPT	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPU	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPV	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPW	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPX	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPY BCBS Prefix	North Carolina	Blue-Cross Blue-Shield of North Carolina
YPZ	North Carolina	Blue-Cross Blue-Shield of North Carolina
YQA	-	Unallocated/Not Assigned
YQB	-	Unallocated/Not Assigned
YQC	-	Unallocated/Not Assigned
YQD	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQE	-	Unallocated/Not Assigned
YQF	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQG	-	Unallocated/Not Assigned
YQH	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQI	-	Unallocated/Not Assigned
YQJ	-	Unallocated/Not Assigned
YQK	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQL	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQM	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQN	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQO	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQP	-	Unallocated/Not Assigned
YQQ	-	Unallocated/Not Assigned
YQR	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQS	-	Unallocated/Not Assigned
YQT	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQU	-	Unallocated/Not Assigned
YQV	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQW	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQX	-	Unallocated/Not Assigned
YQY	North Dakota	Blue-Cross Blue-Shield of North Dakota
YQZ	New York (Western)	Blue-Cross Blue-Shield of Western New York
YRA	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRB	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRC	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YRD	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YRE	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRF	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRG	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRH	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YRI	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YRJ	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRK	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YRL	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRM	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRN	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRO	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRP BCBS Prefix	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRQ	Missouri	Anthem Blue-Cross Blue-Shield of Missouri
YRR	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRS	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRT	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRU	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRV	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YRW	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YRX	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRY	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YRZ	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YSA	Idaho	Blue-Cross of Idaho
YSB	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YSC	Minnesota	Blue-Cross Blue-Shield of Minnesota
YSD	Wisconsin	Anthem Blue-Cross Blue-Shield of Wisconsin
YSE	-	Unallocated/Not Assigned
YSF	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YSG	California	Blue-Shield of California
YSH	-	Unallocated/Not Assigned
YSI	-	Unallocated/Not Assigned
YSJ	Alaska	Premera Blue-Cross of Alaska
YSK	-	Unallocated/Not Assigned
YSL	Alaska	Premera Blue-Cross Blue-Shield of Alaska
YSM	Alabama	Blue-Cross Blue-Shield of Alabama
YSN	California	Anthem Blue-Cross
YSO	New York (Western)	Blue-Cross Blue-Shield of Western New York
YSP	-	Unallocated/Not Assigned
YSQ	California	Anthem Blue-Cross
YSR	Texas	Blue-Cross Blue-Shield of Texas
YSS	Massachusetts	Blue-Cross Blue-Shield of Massachusetts
YST	-	Unallocated/Not Assigned
YSU	Georgia	Anthem Blue-Cross Blue-Shield of Georgia
YSV	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YSW	Idaho	Blue-Cross of Idaho
YSX	Rhode Island	Blue-Cross Blue-Shield of Rhode Island
YSY	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YSZ	Wisconsin	Anthem Blue-Cross Blue-Shield of Wisconsin
YTA	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTB	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTC	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTD	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTE	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTF	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTG	-	Unallocated/Not Assigned
YTH	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTI	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTJ	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTK	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTL	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTM	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTN	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTO	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTP	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTQ	-	Unallocated/Not Assigned
YTR	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTS	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTT	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTU	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTV	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTW	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTX	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YTY	-	Unallocated/Not Assigned
YTZ	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YUA	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUB	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUC	-	Unallocated/Not Assigned
YUD	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUE	-	Unallocated/Not Assigned
YUF	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUG	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUH	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUI	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUJ	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUK	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUL	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUM	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUN	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUO	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUP BCBS Prefix	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUQ	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUR	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUS	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUT	New Mexico	Blue-Cross Blue-Shield of New Mexico
YUU	-	Unallocated/Not Assigned
YUV	Illinois	Blue-Cross Blue-Shield of Illinois
YUW	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUX	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUY	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YUZ	Oklahoma	Blue-Cross Blue-Shield of Oklahoma
YVA	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVB	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVC	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVD	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVE	Virginia	Anthem Blue-Cross Blue-Shield of Virginia
YVF	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVG	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVH	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVI	Pennsylvania	Capital Blue-Cross of Pennsylvania
YVJ	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YVK	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YVL	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVM	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVN	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVO	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVP	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVQ	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVR	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVS	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVT	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVU	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVV	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVW	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVX	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YVY	Connecticut	Anthem Blue-Cross Blue-Shield of Connecticut
YVZ	Oregon/Idaho/Utah/Washington	Regence Blue-Cross Blue-Shield
YWA	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWB	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWC	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWD	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWE	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWF	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWG	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWH	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWI	Wisconsin	Anthem Blue-Cross Blue-Shield of Wisconsin
YWJ	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWK	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWL	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YWM	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWN	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWO	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YWP BCBS Prefix	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWQ	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YWR	-	Unallocated/Not Assigned
YWS	-	Unallocated/Not Assigned
YWT	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWU	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YWV	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWW	Pennsylvania	Capital Blue-Cross of Pennsylvania
YWX	New York	Empire Blue-Cross Blue-Shield of New York
YWY	Wyoming	Blue-Cross Blue-Shield of Wyoming
YWZ	Pennsylvania	Capital Blue-Cross of Pennsylvania
YXA	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXB	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXC	New York	Empire Blue-Cross Blue-Shield of New York
YXD	New York	Empire Blue-Cross Blue-Shield of New York
YXE	New York	Empire Blue-Cross Blue-Shield of New York
YXF BCBS Prefix	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXG	New York	Empire Blue-Cross Blue-Shield of New York
YXH	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YXI	-	Unallocated/Not Assigned
YXJ	New York	Empire Blue-Cross Blue-Shield of New York
YXK	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXL	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXM	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXN	Nebraska	Blue-Cross Blue-Shield of Nebraska
YXO	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXP	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXQ	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXR	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXS	New York	Empire Blue-Cross Blue-Shield of New York
YXT	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXU	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXV	New York	Empire Blue-Cross Blue-Shield of New York
YXW	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXX	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXY	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YXZ	Pennsylvania	Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania
YYA	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYB	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYC	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYD	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYE	-	Unallocated/Not Assigned
YYF	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYG	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYH	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYI	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYJ	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYK	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYL	Connecticut	Anthem Blue-Cross Blue-Shield of Connecticut
YYM BCBS Prefix	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYN	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYO	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYP	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYQ	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYR	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYS	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYT	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYU	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYV	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYW	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYX	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YYY	New Jersey	Horizon Blue-Cross Blue-Shield of New Jersey
YYZ	Pennsylvania	Highmark Blue-Cross Blue-Shield of Pennsylvania
YZA	Kentucky	Anthem Blue-Cross Blue-Shield of Kentucky
YZB	Colorado	Anthem Blue-Cross Blue-Shield of Colorado
YZC	California	Anthem Blue-Cross
YZD BCBS Prefix	Indiana	Anthem Blue-Cross Blue-Shield of Indiana
YZE BCBS Prefix	Kentucky	Anthem Blue-Cross Blue-Shield of Kentucky
YZF	Kentucky	Anthem Blue-Cross Blue-Shield of Kentucky
YZG	Kentucky	Anthem Blue-Cross Blue-Shield of Kentucky
YZH	-	Unallocated/Not Assigned
YZI	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YZJ	Kentucky	Anthem Blue-Cross Blue-Shield of Kentucky
YZK	Connecticut	Anthem Blue-Cross Blue-Shield of Connecticut
YZL	Nebraska	Blue-Cross Blue-Shield of Nebraska
YZM	-	Unallocated/Not Assigned
YZN	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YZO	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YZP	Rhode Island	Blue-Cross Blue-Shield of Rhode Island
YZQ	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YZR	New York	Empire Blue-Cross Blue-Shield of New York
YZS	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YZT	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YZU	California	Anthem Blue-Cross
YZV	Nevada	Anthem Blue-Cross Blue-Shield of Nevada
YZW	New York (Western)	Blue-Cross Blue-Shield of Western New York
YZX	New York (Western)	Blue-Cross Blue-Shield of Western New York
YZY	Ohio	Anthem Blue-Cross Blue-Shield of Ohio
YZZ	Kentucky	Anthem Blue-Cross Blue-Shield of Kentucky

Hammad Butt

Hi, I’m Hammad Butt the founder and content creator behind BCBS Prefix List. I’m a U.S. Citizen with over 10 years of hands-on experience in the medical billing and healthcare administration industry. Throughout my career, I’ve worked with private practices, urgent care centers, and billing companies across the United States, helping them navigate complex insurance systems especially Blue Cross Blue Shield (BCBS) claims and verifications.

BCBS Prefix List YAA to YZZ

BCBS Prefix List YAA to YZZ

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