BCBS Prefix List M2A to M9Z

Blue Cross Blue Shield Provider Phone Number
Blue Cross Blue Shield Federal Phone Number
Blue Cross Blue Shield Claim Mailing address
BCBS Prefix List 2021 - Alpha NumericState LookupBCBS Company
M2A-Unallocated/Not Assigned
M2B-Unallocated/Not Assigned
M2CIllinoisBlue-Cross Blue-Shield of Illinois
M2DIllinoisBlue-Cross Blue-Shield of Illinois
M2ETexasBlue-Cross Blue-Shield of Texas
M2FTexasBlue-Cross Blue-Shield of Texas
M2GTexasBlue-Cross Blue-Shield of Texas
M2HOregon/Idaho/Utah/WashingtonRegence Blue-Cross Blue-Shield
M2INew York (Western)Blue-Cross Blue-Shield of Western New York
M2JIllinoisBlue-Cross Blue-Shield of Illinois
M2KArizonaBlue-Cross Blue-Shield of Arizona
M2LMassachusettsBlue-Cross Blue-Shield of Massachusetts
M2MCaliforniaAnthem Blue-Cross
M2NWisconsinAnthem Blue-Cross Blue-Shield of Wisconsin
M2O-Unallocated/Not Assigned
M2POregon/Idaho/Utah/WashingtonRegence Blue-Cross Blue-Shield
M2QWisconsinAnthem Blue-Cross Blue-Shield of Wisconsin
M2RTexasBlue-Cross Blue-Shield of Texas
M2SIllinoisBlue-Cross Blue-Shield of Illinois
M2TOregon/Idaho/Utah/WashingtonRegence Blue-Cross Blue-Shield
M2UWisconsinAnthem Blue-Cross Blue-Shield of Wisconsin
M2VArizonaBlue-Cross Blue-Shield of Arizona
M2WRhode IslandBlue-Cross Blue-Shield of Rhode Island
M2XMontanaBlue-Cross Blue-Shield of Montana
M2YOregon/Idaho/Utah/WashingtonRegence Blue-Cross Blue-Shield
M2Z-Unallocated/Not Assigned
M3AKansasBlue-Cross Blue-Shield of Kansas
M3BNew York (Western)Blue-Cross Blue-Shield of Western New York
M3CRhode IslandBlue-Cross Blue-Shield of Rhode Island
M3DOregon/Idaho/Utah/WashingtonRegence Blue-Cross Blue-Shield
M3EIllinoisBlue-Cross Blue-Shield of Illinois
M3FTexasBlue-Cross Blue-Shield of Texas
M3GRhode IslandBlue-Cross Blue-Shield of Rhode Island
M3HMinnesotaBlue-Cross Blue-Shield of Minnesota
M3I-Unallocated/Not Assigned
M3JNew YorkEmpire Blue-Cross Blue-Shield of New York
M3KWisconsinAnthem Blue-Cross Blue-Shield of Wisconsin
M3LMichiganBlue-Cross Blue-Shield of Michigan
M3MOregon/Idaho/Utah/WashingtonRegence Blue-Cross Blue-Shield
M3NMaineAnthem Blue-Cross Blue-Shield of Maine
M3OVirginiaAnthem Blue-Cross Blue-Shield of Virginia
M3PArizonaBlue-Cross Blue-Shield of Arizona
M3Q-Unallocated/Not Assigned
M3RTexasBlue-Cross Blue-Shield of Texas
M3SIllinoisBlue-Cross Blue-Shield of Illinois
M3TGeorgiaAnthem Blue-Cross Blue-Shield of Georgia
M3UIndianaAnthem Blue-Cross Blue-Shield of Indiana
M3VArizonaBlue-Cross Blue-Shield of Arizona
M3WOregon/Idaho/Utah/WashingtonRegence Blue-Cross Blue-Shield
M3XWisconsinAnthem Blue-Cross Blue-Shield of Wisconsin
M3YGeorgiaAnthem Blue-Cross Blue-Shield of Georgia
M3ZGeorgiaAnthem Blue-Cross Blue-Shield of Georgia
M4APennsylvaniaHighmark Blue-Cross Blue-Shield of Pennsylvania
M4BPennsylvaniaHighmark Blue-Shield of Pennsylvania
M4CKentuckyAnthem Blue-Cross Blue-Shield of Kentucky
M4DOregon/Idaho/Utah/WashingtonRegence Blue-Cross Blue-Shield
M4E-Unallocated/Not Assigned
M4FTexasBlue-Cross Blue-Shield of Texas
M4GVirginiaAnthem Blue-Cross Blue-Shield of Virginia
M4HMissouriAnthem Blue-Cross Blue-Shield of Missouri
M4I-Unallocated/Not Assigned
M4JPennsylvaniaHighmark Blue-Cross Blue-Shield of Pennsylvania
M4KArizonaBlue-Cross Blue-Shield of Arizona
M4LPennsylvaniaHighmark Blue-Cross Blue-Shield of Pennsylvania
M4MMissouriAnthem Blue-Cross Blue-Shield of Missouri
M4NVirginiaAnthem Blue-Cross Blue-Shield of Virginia
M4O-Unallocated/Not Assigned
M4PTexasBlue-Cross Blue-Shield of Texas
M4QMichiganBlue-Cross Blue-Shield of Michigan
M4RNew York (Northeastern)Blue-Shield of Northeastern New York
M4SIllinoisBlue-Cross Blue-Shield of Illinois
M4TOregon/Idaho/Utah/WashingtonRegence Blue-Cross Blue-Shield
M4UMinnesotaBlue-Cross Blue-Shield of Minnesota
M4V-Unallocated/Not Assigned
M4W-Unallocated/Not Assigned
M4X-Unallocated/Not Assigned
M4YIdahoBlue-Cross of Idaho
M4Z-Unallocated/Not Assigned
M5AMinnesotaBlue-Cross Blue-Shield of Minnesota
M5BOhioAnthem Blue-Cross Blue-Shield of Ohio
M5CMissouriAnthem Blue-Cross Blue-Shield of Missouri
M5DMissouriAnthem Blue-Cross Blue-Shield of Missouri
M5EMissouriAnthem Blue-Cross Blue-Shield of Missouri
M5FTexasBlue-Cross Blue-Shield of Texas
M5GMichiganBlue-Cross Blue-Shield of Michigan
M5H-Unallocated/Not Assigned
M5I-Unallocated/Not Assigned
M5J-Unallocated/Not Assigned
M5KIllinoisBlue-Cross Blue-Shield of Illinois
M5L-Unallocated/Not Assigned
M5MTexasBlue-Cross Blue-Shield of Texas
M5NMassachusettsBlue-Cross Blue-Shield of Massachusetts
M5O-Unallocated/Not Assigned
M5P-Unallocated/Not Assigned
M5Q-Unallocated/Not Assigned
M5RNew York (Western)Blue-Cross Blue-Shield of Western New York
M5S-Unallocated/Not Assigned
M5TMassachusettsBlue-Cross Blue-Shield of Massachusetts
M5U-Unallocated/Not Assigned
M5VMaryland/District of Columbia/Northern VirginiaCarefirst Blue-Cross Blue-Shield
M5W-Unallocated/Not Assigned
M5XIllinoisBlue-Cross Blue-Shield of Illinois
M5Y-Unallocated/Not Assigned
M5Z-Unallocated/Not Assigned
M6ATexasBlue-Cross Blue-Shield of Texas
M6B-Unallocated/Not Assigned
M6CNew YorkEmpire Blue-Cross Blue-Shield of New York
M6D-Unallocated/Not Assigned
M6E-Unallocated/Not Assigned
M6FTexasBlue-Cross Blue-Shield of Texas
M6G-Unallocated/Not Assigned
M6H-Unallocated/Not Assigned
M6I-Unallocated/Not Assigned
M6J-Unallocated/Not Assigned
M6K-Unallocated/Not Assigned
M6L-Unallocated/Not Assigned
M6MKentuckyAnthem Blue-Cross Blue-Shield of Kentucky
M6N-Unallocated/Not Assigned
M6O-Unallocated/Not Assigned
M6P-Unallocated/Not Assigned
M6Q-Unallocated/Not Assigned
M6RMaryland/District of Columbia/Northern VirginiaCarefirst Blue-Cross Blue-Shield
M6SIllinoisBlue-Cross Blue-Shield of Illinois
M6T-Unallocated/Not Assigned
M6UOhioAnthem Blue-Cross Blue-Shield of Ohio
M6V-Unallocated/Not Assigned
M6W-Unallocated/Not Assigned
M6X-Unallocated/Not Assigned
M6Y-Unallocated/Not Assigned
M6Z-Unallocated/Not Assigned
M7ACaliforniaAnthem Blue-Cross
M7BAlaskaPremera Blue-Cross Blue-Shield of Alaska
M7CNew YorkEmpire Blue-Cross Blue-Shield of New York
M7DNorth DakotaBlue-Cross Blue-Shield of North Dakota
M7ECaliforniaAnthem Blue-Cross
M7FTexasBlue-Cross Blue-Shield of Texas
M7G-Unallocated/Not Assigned
M7H-Unallocated/Not Assigned
M7I-Unallocated/Not Assigned
M7J-Unallocated/Not Assigned
M7K-Unallocated/Not Assigned
M7LMaryland/District of Columbia/Northern VirginiaCarefirst Blue-Cross Blue-Shield
M7MColoradoAnthem Blue-Cross Blue-Shield of Colorado
M7N-Unallocated/Not Assigned
M7O-Unallocated/Not Assigned
M7P-Unallocated/Not Assigned
M7Q-Unallocated/Not Assigned
M7R-Unallocated/Not Assigned
M7SIllinoisBlue-Cross Blue-Shield of Illinois
M7T-Unallocated/Not Assigned
M7U-Unallocated/Not Assigned
M7VMissouriAnthem Blue-Cross Blue-Shield of Missouri
M7WIndianaAnthem Blue-Cross Blue-Shield of Indiana
M7XKentuckyAnthem Blue-Cross Blue-Shield of Kentucky
M7Y-Unallocated/Not Assigned
M7Z-Unallocated/Not Assigned
M8AColoradoAnthem Blue-Cross Blue-Shield of Colorado
M8B-Unallocated/Not Assigned
M8CMaryland/District of Columbia/Northern VirginiaCarefirst Blue-Cross Blue-Shield
M8D-Unallocated/Not Assigned
M8E-Unallocated/Not Assigned
M8FTexasBlue-Cross Blue-Shield of Texas
M8G-Unallocated/Not Assigned
M8HNew YorkEmpire Blue-Cross Blue-Shield of New York
M8I-Unallocated/Not Assigned
M8J-Unallocated/Not Assigned
M8K-Unallocated/Not Assigned
M8L-Unallocated/Not Assigned
M8M-Unallocated/Not Assigned
M8N-Unallocated/Not Assigned
M8O-Unallocated/Not Assigned
M8P-Unallocated/Not Assigned
M8Q-Unallocated/Not Assigned
M8R-Unallocated/Not Assigned
M8SIllinoisBlue-Cross Blue-Shield of Illinois
M8TIllinoisBlue-Cross Blue-Shield of Illinois
M8U-Unallocated/Not Assigned
M8VConnecticutAnthem Blue-Cross Blue-Shield of Connecticut
M8WMaineAnthem Blue-Cross Blue-Shield of Maine
M8XNew HampshireAnthem Blue-Cross Blue-Shield of New Hampshire
M8Y-Unallocated/Not Assigned
M8Z-Unallocated/Not Assigned
M9ANew YorkEmpire Blue-Cross Blue-Shield of New York
M9B-Unallocated/Not Assigned
M9CNew YorkEmpire Blue-Cross Blue-Shield of New York
M9D-Unallocated/Not Assigned
M9E-Unallocated/Not Assigned
M9FTexasBlue-Cross Blue-Shield of Texas
M9G-Unallocated/Not Assigned
M9H-Unallocated/Not Assigned
M9I-Unallocated/Not Assigned
M9J-Unallocated/Not Assigned
M9K-Unallocated/Not Assigned
M9L-Unallocated/Not Assigned
M9M-Unallocated/Not Assigned
M9NCaliforniaAnthem Blue-Cross
M9O-Unallocated/Not Assigned
M9P-Unallocated/Not Assigned
M9Q-Unallocated/Not Assigned
M9R-Unallocated/Not Assigned
M9SIllinoisBlue-Cross Blue-Shield of Illinois
M9TTexasBlue-Cross Blue-Shield of Texas
M9U-Unallocated/Not Assigned
M9V-Unallocated/Not Assigned
M9W-Unallocated/Not Assigned
M9X-Unallocated/Not Assigned
M9Y-Unallocated/Not Assigned
M9Z-Unallocated/Not Assigned