| BCBS Prefix List 2024 - Alpha Numeric | State Lookup | BCBS Company |
|---|---|---|
| C2A | Texas | Blue-Cross Blue-Shield of Texas |
| C2B | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| C2C | New York (Northeastern) | Blue-Shield of Northeastern New York |
| C2D | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| C2E | Alaska | Premera Blue-Cross of Alaska |
| C2F | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| C2G | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| C2H | Alabama | Blue-Cross Blue-Shield of Alabama |
| C2I | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| C2J | California | Anthem Blue-Cross |
| C2K | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| C2L | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| C2M | California | Anthem Blue-Cross |
| C2N | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| C2O | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| C2P | Illinois | Blue-Cross Blue-Shield of Illinois |
| C2Q | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| C2R | Illinois | Blue-Cross Blue-Shield of Illinois |
| C2S | Illinois | Blue-Cross Blue-Shield of Illinois |
| C2T | Alabama | Blue-Cross Blue-Shield of Alabama |
| C2U | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| C2V | Alaska | Premera Blue-Cross of Alaska |
| C2W | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C2X | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| C2Y | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| C2Z | California | Anthem Blue-Cross |
| C3A | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C3B | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| C3C | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C3D | Alaska | Premera Blue-Cross of Alaska |
| C3E | Texas | Blue-Cross Blue-Shield of Texas |
| C3F | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| C3G | California | Anthem Blue-Cross |
| C3H | Alabama | Blue-Cross Blue-Shield of Alabama |
| C3I | California | Anthem Blue-Cross |
| C3J | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| C3K | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| C3L | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| C3M | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| C3N | Texas | Blue-Cross Blue-Shield of Texas |
| C3O | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| C3P | Alaska | Premera Blue-Cross of Alaska |
| C3Q | Michigan | Blue-Cross Blue-Shield of Michigan |
| C3R | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| C3S | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| C3T | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C3U | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| C3V | Illinois | Blue-Cross Blue-Shield of Illinois |
| C3W | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C3X | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| C3Y | New York | Empire Blue-Cross Blue-Shield of New York |
| C3Z | New York | Empire Blue-Cross Blue-Shield of New York |
| C4A | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| C4B | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| C4C | Texas | Blue-Cross Blue-Shield of Texas |
| C4D | New York | Empire Blue-Cross Blue-Shield of New York |
| C4E | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| C4F | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| C4G | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| C4H | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C4I | Western New York | Highmark Blue-Cross Blue-Shield of Western New York |
| C4J | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| C4K | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| C4L | Texas | Blue-Cross Blue-Shield of Texas |
| C4M | New York | Empire Blue-Cross Blue-Shield of New York |
| C4N | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| C4O | - | Unallocated/Not Assigned |
| C4P | Texas | Blue-Cross Blue-Shield of Texas |
| C4Q | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| C4R | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| C4S | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| C4T | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| C4U | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| C4V | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| C4W | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| C4X | Texas | Blue-Cross Blue-Shield of Texas |
| C4Y | Texas | Blue-Cross Blue-Shield of Texas |
| C4Z | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| C5A | California | Anthem Blue-Cross |
| C5B | Illinois | Blue-Cross Blue-Shield of Illinois |
| C5C | Arkansas | Arkansas Blue-Cross Blue-Shield |
| C5D | Illinois | Blue-Cross Blue-Shield of Illinois |
| C5E | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| C5F | Texas | Blue-Cross Blue-Shield of Texas |
| C5G | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| C5H | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| C5I | - | Unallocated/Not Assigned |
| C5J | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| C5K | New York (Northeastern) | Blue-Shield of Northeastern New York |
| C5L | Illinois | Blue-Cross Blue-Shield of Illinois |
| C5M | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| C5N | Illinois | Blue-Cross Blue-Shield of Illinois |
| C5O | - | Unallocated/Not Assigned |
| C5P | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| C5Q | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| C5R | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| C5S | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| C5T | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| C5U | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| C5V | Texas | Blue-Cross Blue-Shield of Texas |
| C5W | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| C5X | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| C5Y | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| C5Z | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| C6A | California | Anthem Blue-Cross |
| C6B | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| C6C | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| C6D | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| C6E | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| C6F | Illinois | Blue-Cross Blue-Shield of Illinois |
| C6G | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| C6H | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| C6I | - | Unallocated/Not Assigned |
| C6J | Illinois | Blue-Cross Blue-Shield of Illinois |
| C6K | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| C6L | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| C6M | Michigan | Blue-Cross Blue-Shield of Michigan |
| C6N | Illinois | Blue-Cross Blue-Shield of Illinois |
| C6O | - | Unallocated/Not Assigned |
| C6P | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C6Q | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| C6R | New York | Empire Blue-Cross Blue-Shield of New York |
| C6S | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| C6T | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C6U | Illinois | Blue-Cross Blue-Shield of Illinois |
| C6V | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C6W | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| C6X | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| C6Y | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| C6Z | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| C7A | California | Anthem Blue-Cross |
| C7B | Illinois | Blue-Cross Blue-Shield of Illinois |
| C7C | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| C7D | Illinois | Blue-Cross Blue-Shield of Illinois |
| C7E | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| C7F | Illinois | Blue-Cross Blue-Shield of Illinois |
| C7G | California | Anthem Blue-Cross |
| C7H | Illinois | Blue-Cross Blue-Shield of Illinois |
| C7I | - | Unallocated/Not Assigned |
| C7J | California | Anthem Blue-Cross |
| C7K | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| C7L | Illinois | Blue-Cross Blue-Shield of Illinois |
| C7M | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| C7N | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| C7O | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C7P | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| C7Q | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| C7R | Texas | Blue-Cross Blue-Shield of Texas |
| C7S | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| C7T | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| C7U | Illinois | Blue-Cross Blue-Shield of Illinois |
| C7V | Texas | Blue-Cross Blue-Shield of Texas |
| C7W | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| C7X | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| C7Y | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C7Z | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| C8A | California | Anthem Blue-Cross |
| C8B | Illinois | Blue-Cross Blue-Shield of Illinois |
| C8C | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| C8D | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| C8E | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| C8F | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| C8G | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C8H | Illinois | Blue-Cross Blue-Shield of Illinois |
| C8I | - | Unallocated/Not Assigned |
| C8J | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| C8K | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| C8L | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| C8M | Illinois | Blue-Cross Blue-Shield of Illinois |
| C8N | Illinois | Blue-Cross Blue-Shield of Illinois |
| C8O | - | Unallocated/Not Assigned |
| C8P | Texas | Blue-Cross Blue-Shield of Texas |
| C8Q | California | Anthem Blue-Cross |
| C8R | Texas | Blue-Cross Blue-Shield of Texas |
| C8S | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| C8T | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| C8U | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| C8V | California | Anthem Blue-Cross |
| C8W | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| C8X | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| C8Y | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| C8Z | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| C9A | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| C9B | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| C9C | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| C9D | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| C9E | California | Anthem Blue-Cross |
| C9F | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| C9G | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| C9H | Illinois | Blue-Cross Blue-Shield of Illinois |
| C9I | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| C9J | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| C9K | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| C9L | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| C9M | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| C9N | Illinois | Blue-Cross Blue-Shield of Illinois |
| C9O | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| C9P | Texas | Blue-Cross Blue-Shield of Texas |
| C9Q | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| C9R | Texas | Blue-Cross Blue-Shield of Texas |
| C9S | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| C9T | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| C9U | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| C9V | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| C9W | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| C9X | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| C9Y | New York | Empire Blue-Cross Blue-Shield of New York |
| C9Z | Texas | Blue-Cross Blue-Shield of Texas |
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