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BCBS Alpha Numeric Prefix from S2A to S9Z

BCBS Alpha Numeric Prefixes are three-character combinations of letters and numbers found at the beginning of the identification number on Blue Cross Blue Shield insurance cards. They help in identifying the health plans of patients along with their insurance companies.

This blog will cover the alpha numeric prefixes ranging from S2A to S9Z and list down their applicable state, insurance company name, and type of health plans. Continue reading and let Health Quest Billing find the right alpha numeric prefix for you.

BCBS Alpha Numeric Prefix from S2A to S9Z – Latest Insights

BCBS Prefix State Company Name Types Of Health Plan
S2A New York (Western) Blue-Cross Blue-Shield of Western New York HDHP, PPO, Medicaid
S2B Illinois Blue-Cross Blue-Shield of Illinois EPO, Traditional Indemnity, HMO
S2C Illinois Blue-Cross Blue-Shield of Illinois POS, Medicare Advantage, HDHP
S2D Not Assigned
S2E Illinois Blue-Cross Blue-Shield of Illinois HMO, Traditional Indemnity, POS
S2F Illinois Blue-Cross Blue-Shield of Illinois Medicare Advantage, HDHP, PPO
S2G Texas Blue-Cross Blue-Shield of Texas EPO, Medicaid, Traditional Indemnity
S2H Alabama Blue-Cross Blue-Shield of Alabama POS, HMO, Medicare Advantage
S2I Wisconsin Anthem Blue-Cross Blue-Shield of Wisconsin PPO, HDHP, EPO
S2J Illinois Blue-Cross Blue-Shield of Illinois Traditional Indemnity, POS, Medicaid
S2K Texas Blue-Cross Blue-Shield of Texas HMO, Medicare Advantage, HDHP
S2L Illinois Blue-Cross Blue-Shield of Illinois PPO, EPO, Traditional Indemnity
S2M Oregon/Idaho/Utah/Washington Regence Blue-Cross Blue-Shield Medicaid, POS, HMO
S2N Illinois Blue-Cross Blue-Shield of Illinois HDHP, Medicare Advantage, PPO
S2O North Carolina Blue-Cross Blue-Shield of North Carolina EPO, Traditional Indemnity, Medicaid
S2P Illinois Blue-Cross Blue-Shield of Illinois POS, HMO, HDHP
S2Q Massachusetts Blue-Cross Blue-Shield of Massachusetts PPO, Medicare Advantage, EPO
S2R Illinois Blue-Cross Blue-Shield of Illinois Traditional Indemnity, Medicaid, POS
S2S Pennsylvania Independence Blue Cross FOC HDHP, HMO, Medicare Advantage
S2T Illinois Blue-Cross Blue-Shield of Illinois EPO, PPO, Traditional Indemnity
S2U California Anthem Blue-Cross Medicaid, POS, HDHP
S2V Illinois Blue-Cross Blue-Shield of Illinois Medicare Advantage, PPO, EPO
S2W Illinois Blue-Cross Blue-Shield of Illinois HMO, Traditional Indemnity, Medicaid
S2X Texas Blue-Cross Blue-Shield of Texas POS, HDHP, HMO
S2Y Illinois Blue-Cross Blue-Shield of Illinois PPO, EPO, Medicare Advantage
S2Z Texas Blue-Cross Blue-Shield of Texas Traditional Indemnity, Medicaid, POS
S3A New York (Northeastern) Blue-Shield of Northeastern New York HDHP, HMO, PPO
S3B Alaska Premera Blue-Cross Blue-Shield of Alaska Medicare Advantage, EPO, Traditional Indemnity
S3C Pennsylvania Independence Blue Cross FOC Medicaid, POS, HDHP
S3D Illinois Blue-Cross Blue-Shield of Illinois PPO, Medicare Advantage, EPO
S3E Illinois Blue-Cross Blue-Shield of Illinois HMO, Traditional Indemnity, Medicaid
S3F Illinois Blue-Cross Blue-Shield of Illinois POS, HDHP, HMO
S3G Alaska Premera Blue-Cross of Alaska EPO, PPO, Medicare Advantage
S3H Texas Blue-Cross Blue-Shield of Texas Traditional Indemnity, Medicaid, POS
S3I Georgia Anthem Blue-Cross Blue-Shield of Georgia HDHP, HMO, PPO
S3J Maryland/District of Columbia/Northern Virginia Carefirst Blue-Cross Blue-Shield Medicare Advantage, EPO, Traditional Indemnity
S3K Texas Blue-Cross Blue-Shield of Texas Medicaid, POS, HDHP
S3L Illinois Blue-Cross Blue-Shield of Illinois PPO, Medicare Advantage, EPO
S3M Illinois Blue-Cross Blue-Shield of Illinois HMO, Traditional Indemnity, Medicaid
S3N Pennsylvania Highmark Blue-Cross Blue-Shield of Pennsylvania POS, HDHP, HMO
S3O Pennsylvania Highmark Blue-Shield of Pennsylvania EPO, PPO, Medicare Advantage
S3P Illinois Blue-Cross Blue-Shield of Illinois Traditional Indemnity, Medicaid, POS
S3Q California Anthem Blue-Cross HDHP, HMO, PPO
S3R Pennsylvania Highmark Blue-Cross Blue-Shield of Pennsylvania Medicare Advantage, EPO, Traditional Indemnity
S3S Pennsylvania Independence Blue Cross FOC Medicaid, POS, HDHP
S3T New York (Western) Blue-Cross Blue-Shield of Western New York PPO, Medicare Advantage, EPO
S3U Pennsylvania Highmark BCBS of Pennsylvania HMO, Traditional Indemnity, Medicaid
S3V Pennsylvania Highmark BCBS of Pennsylvania POS, HDHP, HMO
S3W Indiana Anthem Blue-Cross Blue-Shield of Indiana EPO, PPO, Medicare Advantage
S3X California Anthem Blue-Cross Traditional Indemnity, Medicaid, POS
S3Y Massachusetts Blue-Cross Blue-Shield of Massachusetts HDHP, HMO, PPO
S3Z Arizona Blue-Cross Blue-Shield of Arizona Medicare Advantage, EPO, Traditional Indemnity
S4A Alaska Premera Blue-Cross of Alaska POS, Medicaid, PPO
S4B Alaska Premera Blue-Cross Blue-Shield of Alaska Traditional Indemnity, HDHP, HMO
S4C Alaska Premera Blue-Cross of Alaska Medicare Advantage, EPO, POS
S4D Alaska Premera Blue-Cross Blue-Shield of Alaska Medicaid, PPO, Traditional Indemnity
S4E Alaska Premera Blue-Cross Blue-Shield of Alaska HMO, HDHP, Medicare Advantage
S4F Illinois Blue-Cross Blue-Shield of Illinois EPO, POS, Medicaid
S4G Massachusetts Blue-Cross Blue-Shield of Massachusetts PPO, Traditional Indemnity, HDHP
S4H Missouri Anthem Blue-Cross Blue-Shield of Missouri Medicare Advantage, HMO, EPO
S4I Pennsylvania Independence Blue Cross FOC POS, Medicaid, PPO
S4J Maryland/District of Columbia/Northern Virginia Carefirst Blue-Cross Blue-Shield Traditional Indemnity, HDHP, HMO
S4K Pennsylvania Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania Medicare Advantage, EPO, POS
S4L Illinois Blue-Cross Blue-Shield of Illinois Medicaid, PPO, Traditional Indemnity
S4M Illinois Blue-Cross Blue-Shield of Illinois HMO, HDHP, Medicare Advantage
S4N Illinois Blue-Cross Blue-Shield of Illinois EPO, POS, Medicaid
S4O Prefix Unallocated/Not Assigned
S4P Illinois Blue-Cross Blue-Shield of Illinois Medicare Advantage, HMO, EPO
S4Q Alaska Premera Blue-Cross Blue-Shield of Alaska POS, Medicaid, PPO
S4R New York Empire Blue-Cross Blue-Shield of New York Traditional Indemnity, HDHP, HMO
S4S Prefix Unallocated/Not Assigned
S4T Maryland/District of Columbia/Northern Virginia Carefirst Blue-Cross Blue-Shield Medicaid, PPO, Traditional Indemnity
S4U Texas Blue-Cross Blue-Shield of Texas HMO, HDHP, Medicare Advantage
S4V Alaska Premera Blue-Cross of Alaska EPO, POS, Medicaid
S4W Oregon/Idaho/Utah/Washington Regence Blue-Cross Blue-Shield PPO, Traditional Indemnity, HDHP
S4X Texas Blue-Cross Blue-Shield of Texas Medicare Advantage, HMO, EPO
S4Y Alaska Premera Blue-Cross Blue-Shield of Alaska POS, Medicaid, PPO
S4Z Maryland/District of Columbia/Northern Virginia Carefirst Blue-Cross Blue-Shield Traditional Indemnity, HDHP, HMO
S5A Texas Blue-Cross Blue-Shield of Texas PPO, Medicare Advantage, EPO
S5B Colorado Anthem Blue-Cross Blue-Shield of Colorado Traditional Indemnity, Medicaid, POS
S5C Massachusetts Blue-Cross Blue-Shield of Massachusetts HDHP, HMO, PPO
S5D California Anthem Blue-Cross EPO, Medicare Advantage, Traditional Indemnity
S5E Texas Blue-Cross Blue-Shield of Texas POS, Medicaid, HDHP
S5F Prefix Unallocated/Not Assigned
S5G Indiana Anthem Blue-Cross Blue-Shield of Indiana Traditional Indemnity, Medicare Advantage, POS
S5H Missouri Anthem Blue-Cross Blue-Shield of Missouri HDHP, Medicaid, HMO
S5I Prefix Unallocated/Not Assigned
S5J Connecticut Anthem Blue-Cross Blue-Shield of Connecticut Medicare Advantage, POS, HDHP
S5K Connecticut Anthem Blue-Cross Blue-Shield of Connecticut HMO, Medicaid, PPO
S5L Illinois Blue-Cross Blue-Shield of Illinois EPO, Traditional Indemnity, Medicare Advantage
S5M Illinois Blue-Cross Blue-Shield of Illinois POS, HDHP, Medicaid
S5N Texas Blue-Cross Blue-Shield of Texas PPO, HMO, EPO
S5O Prefix Unallocated/Not Assigned
S5P Minnesota Blue-Cross Blue-Shield of Minnesota HDHP, Medicaid, HMO
S5Q Alaska Premera Blue-Cross Blue-Shield of Alaska HDHP, EPO, HMO
S5R Georgia Anthem Blue-Cross Blue-Shield of Georgia Medicaid, POS, PPO
S5S Prefix Unallocated/Not Assigned
S5T Illinois Blue-Cross Blue-Shield of Illinois HMO, EPO, Traditional Indemnity
S5U Texas Blue-Cross Blue-Shield of Texas Medicare Advantage, PPO, HDHP
S5V Pennsylvania Capital Blue-Cross of Pennsylvania POS, Medicaid, EPO
S5W Alaska Premera Blue-Cross Blue-Shield of Alaska HMO, Traditional Indemnity, PPO
S5X Connecticut Anthem Blue-Cross Blue-Shield of Connecticut HDHP, Medicare Advantage, POS
S5Y Connecticut Anthem Blue-Cross Blue-Shield of Connecticut EPO, HMO, Medicaid
S5Z Connecticut Anthem Blue-Cross Blue-Shield of Connecticut Traditional Indemnity, HDHP, PPO
S6A Texas Blue-Cross Blue-Shield of Texas Medicare Advantage, POS, EPO
S6B Illinois Blue-Cross Blue-Shield of Illinois PPO, HMO, Traditional Indemnity
S6C Illinois Blue-Cross Blue-Shield of Illinois HDHP, Medicaid, EPO
S6D Missouri Anthem Blue-Cross Blue-Shield of Missouri POS, PPO, Medicare Advantage
S6E Texas Blue-Cross Blue-Shield of Texas Traditional Indemnity, HMO, HDHP
S6F Alaska Premera Blue-Cross Blue-Shield of Alaska Medicaid, EPO, POS
S6G Connecticut Anthem Blue-Cross Blue-Shield of Connecticut PPO, Traditional Indemnity, Medicare Advantage
S6H Prefix Unallocated/Not Assigned
S6I Prefix Unallocated/Not Assigned
S6J Wisconsin Anthem Blue-Cross Blue-Shield of Wisconsin Medicare Advantage, Traditional Indemnity, HMO
S6K Ohio Anthem Blue-Cross Blue-Shield of Ohio HDHP, Medicaid, EPO
S6L Texas Blue-Cross Blue-Shield of Texas POS, PPO, Traditional Indemnity
S6M Kentucky Anthem Blue-Cross Blue-Shield of Kentucky HMO, Medicare Advantage, HDHP
S6N Texas Blue-Cross Blue-Shield of Texas EPO, Medicaid, POS
S6O Prefix Unallocated/Not Assigned
S6P Oregon/Idaho/Utah/Washington Regence Blue-Cross Blue-Shield HDHP, Medicare Advantage, EPO
S6Q New York Empire Blue-Cross Blue-Shield of New York POS, PPO, Medicaid
S6R Maine Anthem Blue-Cross Blue-Shield of Maine Traditional Indemnity, HMO, HDHP
S6S Prefix Unallocated/Not Assigned
S6T Prefix Unallocated/Not Assigned
S6U Texas Blue-Cross Blue-Shield of Texas HMO, HDHP, EPO
S6V California Anthem Blue-Cross POS, Medicare Advantage, Medicaid
S6W Oregon/Idaho/Utah/Washington Regence Blue-Cross Blue-Shield PPO, Traditional Indemnity, HMO
S6X California Anthem Blue-Cross HDHP, EPO, POS
S6Y Illinois Blue-Cross Blue-Shield of Illinois Medicaid, Medicare Advantage, PPO
S6Z Missouri Anthem Blue-Cross Blue-Shield of Missouri Traditional Indemnity, HMO, HDHP
S7A Missouri Anthem Blue-Cross Blue-Shield of Missouri EPO, POS, Medicaid
S7B Missouri Anthem Blue-Cross Blue-Shield of Missouri Medicare Advantage, PPO, Traditional Indemnity
S7C Missouri Anthem Blue-Cross Blue-Shield of Missouri HDHP, HMO, EPO
S7D Wisconsin Anthem Blue-Cross Blue-Shield of Wisconsin POS, Medicaid, PPO
S7E Oregon/Idaho/Utah/Washington Regence Blue-Cross Blue-Shield Traditional Indemnity, Medicare Advantage, HDHP
S7F California Anthem Blue-Cross HMO, EPO, POS
S7G Virginia Anthem Blue-Cross Blue-Shield of Virginia Medicaid, PPO, Traditional Indemnity
S7H Illinois Blue-Cross Blue-Shield of Illinois HDHP, Medicare Advantage, HMO
S7I Prefix Unallocated/Not Assigned
S7J New Jersey Horizon Blue-Cross Blue-Shield of New Jersey Traditional Indemnity, Medicaid, HDHP
S7K New Jersey Horizon Blue-Cross Blue-Shield of New Jersey Medicare Advantage, HMO, EPO
S7L Oregon/Idaho/Utah/Washington Regence Blue-Cross Blue-Shield POS, PPO, Medicaid
S7M Maryland/District of Columbia/Northern Virginia Carefirst Blue-Cross Blue-Shield HDHP, Traditional Indemnity, Medicare Advantage
S7N Missouri Anthem Blue-Cross Blue-Shield of Missouri HMO, EPO, POS
S7O Prefix Unallocated/Not Assigned
S7P Illinois Blue-Cross Blue-Shield of Illinois Traditional Indemnity, Medicare Advantage, HMO
S7Q Missouri Anthem Blue-Cross Blue-Shield of Missouri EPO, POS, Medicaid
S7R California Anthem Blue-Cross PPO, HDHP, Traditional Indemnity
S7S Prefix Unallocated/Not Assigned
S7T Illinois Blue-Cross Blue-Shield of Illinois POS, Medicaid, HDHP
S7U Texas Blue-Cross Blue-Shield of Texas Traditional Indemnity, PPO, Medicare Advantage
S7V Georgia Anthem Blue-Cross Blue-Shield of Georgia HMO, EPO, POS
S7W Alaska Premera Blue-Cross Blue-Shield of Alaska Medicaid, HDHP, PPO
S7X Illinois Blue-Cross Blue-Shield of Illinois Medicare Advantage, Traditional Indemnity, HMO
S7Y Alaska Premera Blue-Cross Blue-Shield of Alaska EPO, POS, PPO
S7Z California Anthem Blue-Cross HDHP, Medicaid, Traditional Indemnity
S8A Ohio Anthem Blue-Cross Blue-Shield of Ohio HMO, Medicare Advantage, EPO
S8B Texas Blue-Cross Blue-Shield of Texas POS, PPO, HDHP
S8C Arizona Blue-Cross Blue-Shield of Arizona Traditional Indemnity, Medicaid, EPO
S8D Indiana Anthem Blue-Cross Blue-Shield of Indiana Medicare Advantage, HMO, PPO
S8E Alaska Premera Blue-Cross Blue-Shield of Alaska HDHP, POS, Traditional Indemnity
S8F Indiana Anthem Blue-Cross Blue-Shield of Indiana Medicaid, EPO, HMO
S8G Indiana Anthem Blue-Cross Blue-Shield of Indiana PPO, Medicare Advantage, HDHP
S8H Indiana Anthem Blue-Cross Blue-Shield of Indiana POS, Traditional Indemnity, Medicaid
S8I Prefix Unallocated/Not Assigned
S8J Indiana Anthem Blue-Cross Blue-Shield of Indiana HDHP, PPO, POS
S8K Alaska Premera Blue-Cross Blue-Shield of Alaska Traditional Indemnity, Medicaid, HMO
S8L Illinois Blue-Cross Blue-Shield of Illinois EPO, Medicare Advantage, HDHP
S8M Texas Blue-Cross Blue-Shield of Texas POS, PPO, Traditional Indemnity
S8N Minnesota Blue-Cross Blue-Shield of Minnesota Medicaid, HMO, EPO
S8O Prefix Unallocated/Not Assigned
S8P Indiana Anthem Blue-Cross Blue-Shield of Indiana PPO, Traditional Indemnity, Medicaid
S8Q Indiana Anthem Blue-Cross Blue-Shield of Indiana HMO, EPO, Medicare Advantage
S8R Texas Blue-Cross Blue-Shield of Texas HDHP, POS, PPO
S8S Pennsylvania Independence Blue Cross FOC Traditional Indemnity, Medicaid, EPO
S8T Missouri Anthem Blue-Cross Blue-Shield of Missouri Medicare Advantage, HMO, POS
S8U New Jersey Horizon Blue-Cross Blue-Shield of New Jersey PPO, HDHP, Traditional Indemnity
S8V Indiana Anthem Blue-Cross Blue-Shield of Indiana Medicaid, EPO, HMO
S8W Indiana Anthem Blue-Cross Blue-Shield of Indiana Medicare Advantage, POS, PPO
S8X Indiana Anthem Blue-Cross Blue-Shield of Indiana HDHP, Traditional Indemnity, Medicaid
S8Y Pennsylvania Highmark Blue-Cross Blue-Shield of Pennsylvania HMO, EPO, Medicare Advantage
S8Z Indiana Anthem Blue-Cross Blue-Shield of Indiana POS, PPO, HDHP
S9A Missouri Anthem Blue-Cross Blue-Shield of Missouri Traditional Indemnity, Medicaid, EPO
S9B Alaska Premera Blue-Cross Blue-Shield of Alaska Medicare Advantage, HMO, HDHP
S9C Texas Blue-Cross Blue-Shield of Texas POS, PPO, Traditional Indemnity
S9D Prefix Unallocated/Not Assigned
S9E Maryland/District of Columbia/Northern Virginia Carefirst Blue-Cross Blue-Shield Medicare Advantage, HDHP, POS
S9F Missouri Anthem Blue-Cross Blue-Shield of Missouri PPO, Traditional Indemnity, Medicaid
S9G Texas Blue-Cross Blue-Shield of Texas HMO, EPO, Medicare Advantage
S9H Oregon/Idaho/Utah/Washington Regence Blue-Cross Blue-Shield HDHP, POS, PPO
S9I Prefix Unallocated/Not Assigned
S9J Missouri Anthem Blue-Cross Blue-Shield of Missouri EPO, HMO, Medicare Advantage
S9K Oregon/Idaho/Utah/Washington Regence Blue-Cross Blue-Shield POS, PPO, HDHP
S9L Oregon/Idaho/Utah/Washington Regence Blue-Cross Blue-Shield Traditional Indemnity, Medicaid, EPO
S9M Michigan Blue-Cross Blue-Shield of Michigan HMO, Medicare Advantage, POS
S9N Texas Blue-Cross Blue-Shield of Texas PPO, HDHP, Traditional Indemnity
S9O Prefix Unallocated/Not Assigned
S9P California Anthem Blue-Cross Medicare Advantage, POS, PPO
S9Q Missouri Anthem Blue-Cross Blue-Shield of Missouri Traditional Indemnity, HDHP, Medicaid
S9R Ohio Anthem Blue-Cross Blue-Shield of Ohio EPO, HMO, Medicare Advantage
S9S Pennsylvania Independence Blue Cross FOC POS, PPO, HDHP
S9T Kentucky Anthem Blue-Cross Blue-Shield of Kentucky Medicaid, Traditional Indemnity, EPO
S9U Wisconsin Anthem Blue-Cross Blue-Shield of Wisconsin Medicare Advantage, HMO, POS
S9V Missouri Anthem Blue-Cross Blue-Shield of Missouri PPO, HDHP, Traditional Indemnity
S9W Missouri Anthem Blue-Cross Blue-Shield of Missouri Medicaid, EPO, HMO
S9X Missouri Anthem Blue-Cross Blue-Shield of Missouri Medicare Advantage, POS, PPO
S9Y Wisconsin Anthem Blue-Cross Blue-Shield of Wisconsin Traditional Indemnity, HDHP, Medicaid
S9Z Connecticut Anthem Blue-Cross Blue-Shield of Connecticut EPO, HMO, Medicare Advantage

 

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Frequently Asked Questions (FAQs)

Yes, BCBS prefixes help determine the coverage area by identifying the specific Blue Cross Blue Shield company and its geographic region. This enables accurate routing of claims and verification of coverage for members based on their location​.

BCBS prefixes identify the specific BCBS plan a member belongs to, allowing out-of-network providers to route claims correctly for processing. This ensures that claims are processed accurately, even though out-of-network services may involve higher deductibles and lower reimbursement rates​​.

If your BCBS prefix is incorrect, you should verify the prefix on your card, contact BCBS customer service, and follow any claim filing instructions provided on your card. Avoid guessing the prefix to prevent delays in processing claims and ensure accurate billing​.

Yes, BCBS prefixes are linked to specific regions or states. They help route claims to the correct Blue Cross Blue Shield company based on the member's location, ensuring that claims are processed by the appropriate regional office​​.

There isn't a universal prefix system specifically for PPO and HMO plans. The prefixes vary by location and specific Blue Cross Blue Shield companies. Each company assigns prefixes based on their internal coding systems and the types of plans they offer