| E2A | Blue Cross Blue Shield of Texas |
| E2B | Blue Cross Blue Shield of Texas |
| E2C | Anthem Blue Cross Blue Shield of Indiana |
| E2D | Carefirst Blue Cross Blue Shield |
| E2E | Regence Blue Cross Blue Shield |
| E2F | Anthem Blue Cross of California |
| E2G | Anthem Blue Cross of California |
| E2H | Anthem Blue Cross of California |
| E2I | Unassigned Prefix |
| E2J | Anthem Blue Cross of California |
| E2K | Blue Cross Blue Shield of Illinois |
| E2L | Blue Cross of Massachusetts |
| E2M | Blue Cross Blue Shield of Texas |
| E2N | Blue Cross Blue Shield of Illinois |
| E2O | Unassigned Prefix |
| E2P | Anthem Blue Cross of California |
| E2Q | Anthem Blue Cross of California |
| E2R | Anthem Blue Cross of California |
| E2S | Regence Blue Cross Blue Shield |
| E2T | Blue Cross of Massachusetts |
| E2U | Anthem Blue Cross of California |
| E2V | Blue Cross Blue Shield of Illinois |
| E2W | Anthem Blue Cross of California |
| E2X | Anthem Blue Cross of California |
| E2Y | Anthem Blue Cross of California |
| E2Z | Anthem Blue Cross of California |
| E3A | Blue Cross of Massachusetts |
| E3B | Anthem Blue Cross of California |
| E3C | Anthem Blue Cross of California |
| E3D | Anthem Blue Cross of California |
| E3E | Anthem Blue Cross of California |
| E3F | Anthem Blue Cross of California |
| E3G | Blue Cross Blue Shield of Illinois |
| E3H | Anthem Blue Cross of California |
| E3I | Unassigned Prefix |
| E3J | Anthem Blue Cross of California |
| E3K | Anthem Blue Cross of California |
| E3L | Empire Blue Cross Blue Shield |
| E3M | Anthem Blue Cross Blue Shield of Wisconsin |
| E3N | Premera Blue Cross |
| E3O | Unassigned Prefix |
| E3P | Anthem Blue Cross Blue Shield of Wisconsin |
| E3Q | Anthem Blue Cross of California |
| E3R | Anthem Blue Cross Blue Shield of Ohio |
| E3S | Blue Cross Blue Shield of Illinois |
| E3T | Anthem Blue Cross of California |
| E3U | Empire Blue Cross Blue Shield |
| E3V | Blue Cross Blue Shield of Illinois |
| E3W | Carefirst Blue Cross Blue Shield |
| E3X | Anthem Blue Cross Blue Shield of Wisconsin |
| E3Y | Anthem Blue Cross Blue Shield of Georgia |
| E3Z | Anthem Blue Cross Blue Shield of Wisconsin |
| E4A | Blue Cross of Massachusetts |
| E4B | Blue Cross of Massachusetts |
| E4C | Blue Cross of Massachusetts |
| E4D | Blue Cross of Massachusetts |
| E4E | Blue Cross of Massachusetts |
| E4F | Anthem Blue Cross of California |
| E4G | Carefirst Blue Cross Blue Shield |
| E4H | Anthem Blue Cross of California |
| E4I | Unassigned Prefix |
| E4J | Blue Cross Blue Shield of Illinois |
| E4K | Anthem Blue Cross Blue Shield of Georgia |
| E4L | Anthem Blue Cross Blue Shield of Indiana |
| E4M | Anthem Blue Cross Blue Shield of Georgia |
| E4N | Carefirst Blue Cross Blue Shield |
| E4O | Unassigned Prefix |
| E4P | Empire Blue Cross Blue Shield |
| E4Q | Blue Cross Blue Shield of Massachusetts |
| E4R | Carefirst Blue Cross Blue Shield |
| E4S | Anthem Blue Cross Blue Shield of Ohio |
| E4T | Anthem Blue Cross Blue Shield of Colorado |
| E4U | Carefirst Blue Cross Blue Shield |
| E4V | Carefirst Blue Cross Blue Shield |
| E4W | Empire Blue Cross Blue Shield |
| E4X | Anthem Blue Cross Blue Shield of Wisconsin |
| E4Y | Carefirst Blue Cross Blue Shield |
| E4Z | Blue Cross Blue Shield of Tennessee |
| E5A | Blue Cross Blue Shield of Texas |
| E5B | Anthem Blue Cross of California |
| E5C | Blue Cross Blue Shield of Rhode Island |
| E5D | Premera Blue Cross Blue Shield of Alaska |
| E5E | Anthem Blue Cross Blue Shield of Nevada |
| E5F | Carefirst Blue Cross Blue Shield |
| E5G | Carefirst Blue Cross Blue Shield |
| E5H | Premera Blue Cross Blue Shield of Alaska |
| E5I | Unassigned Prefix |
| E5J | Carefirst Blue Cross Blue Shield |
| E5K | Blue Cross Blue Shield of Texas |
| E5L | Blue Cross Blue Shield of Texas |
| E5M | Highmark Blue Shield |
| E5N | Blue Cross Blue Shield of Texas |
| E5O | Unassigned Prefix |
| E5P | Anthem Blue Cross Blue Shield of Missouri |
| E5Q | Anthem Blue Cross Blue Shield of Nevada |
| E5R | Anthem Blue Cross Blue Shield of Missouri |
| E5S | Blue Cross Blue Shield of Texas |
| E5T | Blue Cross Blue Shield of Alabama |
| E5U | Carefirst Blue Cross Blue Shield |
| E5V | Blue Cross Blue Shield of Texas |
| E5W | Carefirst Blue Cross Blue Shield |
| E5X | Premera Blue Cross |
| E5Y | Carefirst Blue Cross Blue Shield |
| E5Z | Carefirst Blue Cross Blue Shield |
| E6A | Anthem Blue Cross Blue Shield of Ohio |
| E6B | Carefirst Blue Cross Blue Shield |
| E6C | Anthem Blue Cross Blue Shield of Indiana |
| E6D | Empire Blue Cross Blue Shield |
| E6E | Highmark Blue Cross Blue Shield |
| E6F | Blue Cross Blue Shield of Illinois |
| E6G | Highmark Blue Cross Blue Shield |
| E6H | Anthem Blue Cross Blue Shield of New Hampshire |
| E6I | Unassigned Prefix |
| E6J | Highmark Blue Cross Blue Shield |
| E6K | Highmark Blue Cross Blue Shield |
| E6L | Anthem Blue Cross Blue Shield of Nevada |
| E6M | Anthem Blue Cross Blue Shield of Ohio |
| E6N | Blue Cross Blue Shield of Texas |
| E6O | Highmark Blue Cross Blue Shield |
| E6P | Anthem Blue Cross Blue Shield of Missouri |
| E6Q | Anthem Blue Cross Blue Shield of Nevada |
| E6R | Anthem Blue Cross Blue Shield of Ohio |
| E6S | Highmark Blue Shield |
| E6T | Anthem Blue Cross Blue Shield of Wisconsin |
| E6U | Highmark Blue Cross Blue Shield |
| E6V | Empire Blue Cross Blue Shield |
| E6W | Anthem Blue Cross Blue Shield of Nevada |
| E6X | Carefirst Blue Cross Blue Shield |
| E6Y | Highmark Blue Cross Blue Shield |
| E6Z | Unassigned Prefix |
| E7A | Anthem Blue Cross Blue Shield of Georgia |
| E7B | Anthem Blue Cross Blue Shield of Indiana |
| E7C | Anthem Blue Cross Blue Shield of Kentucky |
| E7D | Anthem Blue Cross Blue Shield of Missouri |
| E7E | Anthem Blue Cross Blue Shield of Indiana |
| E7F | Anthem Blue Cross Blue Shield of Indiana |
| E7G | Highmark Blue Cross Blue Shield |
| E7H | Anthem Blue Cross Blue Shield of Ohio |
| E7I | Unassigned Prefix |
| E7J | Highmark Blue Cross Blue Shield |
| E7K | Highmark Blue Cross Blue Shield |
| E7L | Highmark Blue Cross Blue Shield |
| E7M | Anthem Blue Cross of California |
| E7N | Blue Cross Blue Shield of Texas |
| E7O | Unassigned Prefix |
| E7P | Highmark Blue Cross Blue Shield |
| E7Q | Blue Cross Blue Shield of Massachusetts |
| E7R | Carefirst Blue Cross Blue Shield |
| E7S | Anthem Blue Cross of California |
| E7T | Carefirst Blue Cross Blue Shield |
| E7U | Blue Cross Blue Shield of Illinois |
| E7V | Carefirst Blue Cross Blue Shield |
| E7W | Anthem Blue Cross Blue Shield of Wisconsin |
| E7X | Carefirst Blue Cross Blue Shield |
| E7Y | Carefirst Blue Cross Blue Shield |
| E7Z | Blue Cross Blue Shield of Massachusetts |
| E8A Independence Blue Cross |
| E8B | Anthem Blue Cross of California |
| E8C | Blue Cross Blue Shield of Texas |
| E8D | Blue Cross Blue Shield of Illinois |
| E8E | Blue Cross Blue Shield of Texas |
| E8F | Empire Blue Cross Blue Shield |
| E8G | Premera Blue Cross Blue Shield of Alaska |
| E8H | Anthem Blue Cross Blue Shield of Missouri |
| E8I | Unassigned Prefix |
| E8J Carefirst Blue Cross Blue Shield |
| E8K | Carefirst Blue Cross Blue Shield |
| E8L | Carefirst Blue Cross Blue Shield |
| E8M | Blue Cross Blue Shield of Illinois |
| E8N | Blue Cross Blue Shield of Texas |
| E8O | Unassigned Prefix |
| E8P | Unassigned Prefix |
| E8Q | Regence Blue Cross Blue Shield |
| E8R | Carefirst Blue Cross Blue Shield |
| E8S | Anthem Blue Cross of California |
| E8T | Anthem Blue Cross of California |
| E8U | Carefirst Blue Cross Blue Shield |
| E8V | Carefirst Blue Cross Blue Shield |
| E8W | Carefirst Blue Cross Blue Shield |
| E8X | Anthem Blue Cross of California |
| E8Y | Carefirst Blue Cross Blue Shield |
| E8Z | Anthem Blue Cross Blue Shield of Nevada |
| E9A | Anthem Blue Cross Blue Shield of Wisconsin |
| E9B | Anthem Blue Cross Blue Shield of Wisconsin |
| E9C | Blue Cross Blue Shield of Texas |
| E9D | Anthem Blue Cross Blue Shield of Missouri |
| E9E | Blue Cross Blue Shield of Texas |
| E9F | Carefirst Blue Cross Blue Shield |
| E9G | Carefirst Blue Cross Blue Shield |
| E9H | Blue Cross Blue Shield of Texas |
| E9I | Unassigned Prefix |
| E9J | Carefirst Blue Cross Blue Shield |
| E9K | Carefirst Blue Cross Blue Shield |
| E9L | Highmark Blue Cross Blue Shield |
| E9M | Anthem Blue Cross Blue Shield of Virginia |
| E9N | Blue Cross Blue Shield of Illinois |
| E9O | Unassigned Prefix |
| E9P | Carefirst Blue Cross Blue Shield |
| E9Q | Unassigned Prefix |
| E9R | Highmark Blue Cross Blue Shield |
| E9S | Anthem Blue Cross Blue Shield of Missouri |
| E9T | Carefirst Blue Cross Blue Shield |
| E9U | Unassigned Prefix |
| E9V | Anthem Blue Cross Blue Shield of Ohio |
| E9W | Premera Blue Cross Blue Shield of Alaska |
| E9X | Anthem Blue Cross of California |
| E9Y | Blue Cross Blue Shield of Massachusetts |
| E9Z | Carefirst Blue Cross Blue Shield |
