| F2A | Illinois | Blue-Cross Blue-Shield of Illinois |
| F2B | Texas | Blue-Cross Blue-Shield of Texas |
| F2C | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F2D | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F2E | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F2F | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F2G | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| F2H | California | Anthem Blue-Cross |
| F2I | - | Unallocated/Not Assigned |
| F2J | - | Unallocated/Not Assigned |
| F2K | Alaska | Premera Blue-Cross of Alaska |
| F2L | Illinois | Blue-Cross Blue-Shield of Illinois |
| F2M | Idaho | Blue-Cross of Idaho |
| F2N | Illinois | Blue-Cross Blue-Shield of Illinois |
| F2O | - | Unallocated/Not Assigned |
| F2P | California | Anthem Blue-Cross |
| F2Q | California | Anthem Blue-Cross |
| F2R | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| F2S | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| F2T | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| F2U | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F2V | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| F2W | Illinois | Blue-Cross Blue-Shield of Illinois |
| F2X | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F2Y | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F2Z | - | Unallocated/Not Assigned |
| F3A | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| F3B | Alaska | Premera Blue-Cross of Alaska |
| F3C | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| F3D | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| F3E | Texas | Blue-Cross Blue-Shield of Texas |
| F3F | Illinois | Blue-Cross Blue-Shield of Illinois |
| F3G | - | Unallocated/Not Assigned |
| F3H | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F3I | - | Unallocated/Not Assigned |
| F3J | - | Unallocated/Not Assigned |
| F3K | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| F3L | California | Anthem Blue-Cross |
| F3M | Illinois | Blue-Cross Blue-Shield of Illinois |
| F3N | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F3O | - | Unallocated/Not Assigned |
| F3P | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| F3Q | - | Unallocated/Not Assigned |
| F3R | - | Unallocated/Not Assigned |
| F3S | - | Unallocated/Not Assigned |
| F3T | - | Unallocated/Not Assigned |
| F3U | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F3V | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F3W | - | Unallocated/Not Assigned |
| F3X | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F3Y | Illinois | Blue-Cross Blue-Shield of Illinois |
| F3Z | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| F4A | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| F4B | Florida | Florida-Blue |
| F4C | Texas | Blue-Cross Blue-Shield of Texas |
| F4D | Florida | Florida-Blue |
| F4E | - | Unallocated/Not Assigned |
| F4F | Texas | Blue-Cross Blue-Shield of Texas |
| F4G | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| F4H | Vermont | Blue-Cross of Vermont |
| F4I | - | Unallocated/Not Assigned |
| F4J | California | Anthem Blue-Cross |
| F4K | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| F4L | Western New York | Highmark Blue-Cross Blue-Shield of Western New York |
| F4M | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F4N | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F4O | - | Unallocated/Not Assigned |
| F4P | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| F4Q | - | Unallocated/Not Assigned |
| F4R | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| F4S | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F4T | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| F4U | - | Unallocated/Not Assigned |
| F4V | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| F4W | Florida | Florida-Blue |
| F4X | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| F4Y | New York | Empire Blue-Cross Blue-Shield of New York |
| F4Z | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| F5A | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| F5B | Illinois | Blue-Cross Blue-Shield of Illinois |
| F5C | Texas | Blue-Cross Blue-Shield of Texas |
| F5D | California | Anthem Blue-Cross |
| F5E | - | Unallocated/Not Assigned |
| F5F | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| F5G | Illinois | Blue-Cross Blue-Shield of Illinois |
| F5H | - | Unallocated/Not Assigned |
| F5I | - | Unallocated/Not Assigned |
| F5J | - | Unallocated/Not Assigned |
| F5K | Alaska | Premera Blue-Cross of Alaska |
| F5L | - | Unallocated/Not Assigned |
| F5M | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F5N | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| F5O | - | Unallocated/Not Assigned |
| F5P | Northeastern New York | Highmark Blue-Shield of Northeastern New York |
| F5Q | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| F5R | - | Unallocated/Not Assigned |
| F5S | - | Unallocated/Not Assigned |
| F5T | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F5U | - | Unallocated/Not Assigned |
| F5V | - | Unallocated/Not Assigned |
| F5W | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F5X | - | Unallocated/Not Assigned |
| F5Y | - | Unallocated/Not Assigned |
| F5Z | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F6A | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| F6B | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| F6C | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| F6D | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| F6E | - | Unallocated/Not Assigned |
| F6F | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| F6G | Illinois | Blue-Cross Blue-Shield of Illinois |
| F6H | - | Unallocated/Not Assigned |
| F6I | - | Unallocated/Not Assigned |
| F6J | - | Unallocated/Not Assigned |
| F6K | - | Unallocated/Not Assigned |
| F6L | California | Anthem Blue-Cross |
| F6M | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F6N | Michigan | Blue-Cross Blue-Shield of Michigan |
| F6O | - | Unallocated/Not Assigned |
| F6P | - | Unallocated/Not Assigned |
| F6Q | - | Unallocated/Not Assigned |
| F6R | - | Unallocated/Not Assigned |
| F6S | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| F6T | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F6U | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F6V | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F6W | - | Unallocated/Not Assigned |
| F6X | Michigan | Blue-Cross Blue-Shield of Michigan |
| F6Y | - | Unallocated/Not Assigned |
| F6Z | - | Unallocated/Not Assigned |
| F7A | Pennsylvania | Independence Blue-Cross of Pennsylvania |
| F7B | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| F7C | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| F7D | California | Anthem Blue-Cross |
| F7E | - | Unallocated/Not Assigned |
| F7F | Texas | Blue-Cross Blue-Shield of Texas |
| F7G | Illinois | Blue-Cross Blue-Shield of Illinois |
| F7H | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| F7I | - | Unallocated/Not Assigned |
| F7J | - | Unallocated/Not Assigned |
| F7K | - | Unallocated/Not Assigned |
| F7L | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| F7M | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F7N | - | Unallocated/Not Assigned |
| F7O | - | Unallocated/Not Assigned |
| F7P | Texas | Blue-Cross Blue-Shield of Texas |
| F7Q | - | Unallocated/Not Assigned |
| F7R | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| F7S | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| F7T | - | Unallocated/Not Assigned |
| F7U | - | Unallocated/Not Assigned |
| F7V | - | Unallocated/Not Assigned |
| F7W | Illinois | Blue-Cross Blue-Shield of Illinois |
| F7X | - | Unallocated/Not Assigned |
| F7Y | - | Unallocated/Not Assigned |
| F7Z | - | Unallocated/Not Assigned |
| F8A | Illinois | Blue-Cross Blue-Shield of Illinois |
| F8B | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| F8C | California | Anthem Blue-Cross |
| F8D | - | Unallocated/Not Assigned |
| F8E | - | Unallocated/Not Assigned |
| F8F | Michigan | Blue-Cross Blue-Shield of Michigan |
| F8G | Michigan | Blue-Cross Blue-Shield of Michigan |
| F8H | - | Unallocated/Not Assigned |
| F8I | - | Unallocated/Not Assigned |
| F8J | - | Unallocated/Not Assigned |
| F8K | - | Unallocated/Not Assigned |
| F8L | - | Unallocated/Not Assigned |
| F8M | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F8N | - | Unallocated/Not Assigned |
| F8O | - | Unallocated/Not Assigned |
| F8P | - | Unallocated/Not Assigned |
| F8Q | - | Unallocated/Not Assigned |
| F8R | - | Unallocated/Not Assigned |
| F8S | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| F8T | Texas | Blue-Cross Blue-Shield of Texas |
| F8U | - | Unallocated/Not Assigned |
| F8V | - | Unallocated/Not Assigned |
| F8W | - | Unallocated/Not Assigned |
| F8X | - | Unallocated/Not Assigned |
| F8Y | - | Unallocated/Not Assigned |
| F8Z | - | Unallocated/Not Assigned |
| F9A | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| F9B | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| F9C | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| F9D | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F9E | - | Unallocated/Not Assigned |
| F9F | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| F9G | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| F9H | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| F9I | - | Unallocated/Not Assigned |
| F9J | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| F9K | - | Unallocated/Not Assigned |
| F9L | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| F9M | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| F9N | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| F9O | - | Unallocated/Not Assigned |
| F9P | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| F9Q | - | Unallocated/Not Assigned |
| F9R | - | Unallocated/Not Assigned |
| F9S | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| F9T | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F9U | - | Unallocated/Not Assigned |
| F9V | - | Unallocated/Not Assigned |
| F9W | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| F9X | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| F9Y | - | Unallocated/Not Assigned |
| F9Z | Alaska | Premera Blue-Cross of Alaska |