| BCBS Prefix List 2024 - Alpha Numeric | State Lookup | BCBS Company |
|---|---|---|
| E2A | Texas | Blue-Cross Blue-Shield of Texas |
| E2B | Texas | Blue-Cross Blue-Shield of Texas |
| E2C | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| E2D | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E2E | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| E2F | California | Anthem Blue-Cross |
| E2G | California | Anthem Blue-Cross |
| E2H | California | Anthem Blue-Cross |
| E2I | - | Unallocated/Not Assigned |
| E2J | California | Anthem Blue-Cross |
| E2K | Illinois | Blue-Cross Blue-Shield of Illinois |
| E2L | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| E2M | Texas | Blue-Cross Blue-Shield of Texas |
| E2N | Illinois | Blue-Cross Blue-Shield of Illinois |
| E2O | - | Unallocated/Not Assigned |
| E2P | California | Anthem Blue-Cross |
| E2Q | California | Anthem Blue-Cross |
| E2R | California | Anthem Blue-Cross |
| E2S | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| E2T | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| E2U | California | Anthem Blue-Cross |
| E2V | Illinois | Blue-Cross Blue-Shield of Illinois |
| E2W | California | Anthem Blue-Cross |
| E2X | California | Anthem Blue-Cross |
| E2Y | California | Anthem Blue-Cross |
| E2Z | California | Anthem Blue-Cross |
| E3A | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| E3B | California | Anthem Blue-Cross |
| E3C | California | Anthem Blue-Cross |
| E3D | California | Anthem Blue-Cross |
| E3E | California | Anthem Blue-Cross |
| E3F | California | Anthem Blue-Cross |
| E3G | Illinois | Blue-Cross Blue-Shield of Illinois |
| E3H | California | Anthem Blue-Cross |
| E3I | - | Unallocated/Not Assigned |
| E3J | California | Anthem Blue-Cross |
| E3K | California | Anthem Blue-Cross |
| E3L | New York | Empire Blue-Cross Blue-Shield of New York |
| E3M | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| E3N | Alaska | Premera Blue-Cross of Alaska |
| E3O | - | Unallocated/Not Assigned |
| E3P | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| E3Q | California | Anthem Blue-Cross |
| E3R | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| E3S | Illinois | Blue-Cross Blue-Shield of Illinois |
| E3T | California | Anthem Blue-Cross |
| E3U | New York | Empire Blue-Cross Blue-Shield of New York |
| E3V | Illinois | Blue-Cross Blue-Shield of Illinois |
| E3W | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E3X | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| E3Y | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| E3Z | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| E4A | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| E4B | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| E4C | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| E4D | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| E4E | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| E4F | California | Anthem Blue-Cross |
| E4G | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E4H | California | Anthem Blue-Cross |
| E4I | - | Unallocated/Not Assigned |
| E4J | Illinois | Blue-Cross Blue-Shield of Illinois |
| E4K | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| E4L | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| E4M | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| E4N | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E4O | - | Unallocated/Not Assigned |
| E4P | New York | Empire Blue-Cross Blue-Shield of New York |
| E4Q | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| E4R | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E4S | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| E4T | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| E4U | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E4V | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E4W | New York | Empire Blue-Cross Blue-Shield of New York |
| E4X | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| E4Y | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E4Z | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| E5A | Texas | Blue-Cross Blue-Shield of Texas |
| E5B | California | Anthem Blue-Cross |
| E5C | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| E5D | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| E5E | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| E5F | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E5G | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E5H | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| E5I | - | Unallocated/Not Assigned |
| E5J | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E5K | Texas | Blue-Cross Blue-Shield of Texas |
| E5L | Texas | Blue-Cross Blue-Shield of Texas |
| E5M | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| E5N | Texas | Blue-Cross Blue-Shield of Texas |
| E5O | - | Unallocated/Not Assigned |
| E5P | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| E5Q | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| E5R | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| E5S | Texas | Blue-Cross Blue-Shield of Texas |
| E5T | Alabama | Blue-Cross Blue-Shield of Alabama |
| E5U | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E5V | Texas | Blue-Cross Blue-Shield of Texas |
| E5W | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E5X | Alaska | Premera Blue-Cross of Alaska |
| E5Y | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E5Z | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E6A | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| E6B | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E6C | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| E6D | New York | Empire Blue-Cross Blue-Shield of New York |
| E6E | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E6F | Illinois | Blue-Cross Blue-Shield of Illinois |
| E6G | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E6H | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| E6I | - | Unallocated/Not Assigned |
| E6J | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E6K | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E6L | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| E6M | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| E6N | Texas | Blue-Cross Blue-Shield of Texas |
| E6O | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E6P | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| E6Q | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| E6R | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| E6S | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| E6T | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| E6U | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E6V | New York | Empire Blue-Cross Blue-Shield of New York |
| E6W | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| E6X | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E6Y | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E6Z | - | Unallocated/Not Assigned |
| E7A | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| E7B | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| E7C | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| E7D | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| E7E | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| E7F | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| E7G | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E7H | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| E7I | - | Unallocated/Not Assigned |
| E7J | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E7K | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E7L | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E7M | California | Anthem Blue-Cross |
| E7N | Texas | Blue-Cross Blue-Shield of Texas |
| E7O | - | Unallocated/Not Assigned |
| E7P | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E7Q | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| E7R | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E7S | California | Anthem Blue-Cross |
| E7T | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E7U | Illinois | Blue-Cross Blue-Shield of Illinois |
| E7V | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E7W | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| E7X | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E7Y | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E7Z | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| E8A | Pennsylvania | Independence Blue-Cross of Pennyslvania |
| E8B | California | Anthem Blue-Cross |
| E8C | Texas | Blue-Cross Blue-Shield of Texas |
| E8D | Illinois | Blue-Cross Blue-Shield of Illinois |
| E8E | Texas | Blue-Cross Blue-Shield of Texas |
| E8F | New York | Empire Blue-Cross Blue-Shield of New York |
| E8G | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| E8H | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| E8I | - | Unallocated/Not Assigned |
| E8J | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E8K | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E8L | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E8M | Illinois | Blue-Cross Blue-Shield of Illinois |
| E8N | Texas | Blue-Cross Blue-Shield of Texas |
| E8O | - | Unallocated/Not Assigned |
| E8P | - | Unallocated/Not Assigned |
| E8Q | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| E8R | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E8S | California | Anthem Blue-Cross |
| E8T | California | Anthem Blue-Cross |
| E8U | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E8V | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E8W | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E8X | California | Anthem Blue-Cross |
| E8Y | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E8Z | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| E9A | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| E9B | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| E9C | Texas | Blue-Cross Blue-Shield of Texas |
| E9D | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| E9E | Texas | Blue-Cross Blue-Shield of Texas |
| E9F | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E9G | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E9H | Texas | Blue-Cross Blue-Shield of Texas |
| E9I | - | Unallocated/Not Assigned |
| E9J | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E9K | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E9L | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E9M | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| E9N | Illinois | Blue-Cross Blue-Shield of Illinois |
| E9O | - | Unallocated/Not Assigned |
| E9P | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E9Q | - | Unallocated/Not Assigned |
| E9R | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| E9S | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| E9T | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| E9U | - | Unallocated/Not Assigned |
| E9V | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| E9W | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| E9X | California | Anthem Blue-Cross |
| E9Y | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| E9Z | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
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