| L2A | New York | Empire Blue-Cross Blue-Shield of New York |
| L2B | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| L2C | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| L2D | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| L2E | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| L2F | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| L2G | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| L2H | Illinois | Blue-Cross Blue-Shield of Illinois |
| L2I | California | Anthem Blue-Cross |
| L2J | - | Unallocated/Not Assigned |
| L2K | Illinois | Blue-Cross Blue-Shield of Illinois |
| L2L | Illinois | Blue-Cross Blue-Shield of Illinois |
| L2M | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| L2N | Illinois | Blue-Cross Blue-Shield of Illinois |
| L2O | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| L2P | New York (Northeastern) | Blue-Shield of Northeastern New York |
| L2Q | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| L2R | Illinois | Blue-Cross Blue-Shield of Illinois |
| L2S | Alaska | Premera Blue-Cross of Alaska |
| L2T | California | Anthem Blue-Cross |
| L2U | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| L2V | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| L2W | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| L2X | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| L2Y | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| L2Z | California | Anthem Blue-Cross |
| L3A | Texas | Blue-Cross Blue-Shield of Texas |
| L3B | Illinois | Blue-Cross Blue-Shield of Illinois |
| L3C | Texas | Blue-Cross Blue-Shield of Texas |
| L3D | California | Anthem Blue-Cross |
| L3E | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| L3F | Illinois | Blue-Cross Blue-Shield of Illinois |
| L3G | California | Anthem Blue-Cross |
| L3H | Illinois | Blue-Cross Blue-Shield of Illinois |
| L3I | - | Unallocated/Not Assigned |
| L3J | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| L3K | Illinois | Blue-Cross Blue-Shield of Illinois |
| L3L | Illinois | Blue-Cross Blue-Shield of Illinois |
| L3M | Alaska | Premera Blue-Cross of Alaska |
| L3N | California | Anthem Blue-Cross |
| L3O | - | Unallocated/Not Assigned |
| L3P | Western New York | Highmark Blue-Cross Blue-Shield of Western New York |
| L3Q | - | Unallocated/Not Assigned |
| L3R | Texas | Blue-Cross Blue-Shield of Texas |
| L3S | Illinois | Blue-Cross Blue-Shield of Illinois |
| L3T | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| L3U | California | Anthem Blue-Cross |
| L3V | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| L3W | Alabama | Blue-Cross Blue-Shield of Alabama |
| L3X | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| L3Y | California | Anthem Blue-Cross |
| L3Z | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| L4A | New York | Empire Blue-Cross Blue-Shield of New York |
| L4B | Illinois | Blue-Cross Blue-Shield of Illinois |
| L4C | California | Anthem Blue-Cross |
| L4D | Alaska | Premera Blue-Cross of Alaska |
| L4E | Wisconsin | Anthem Blue-Cross Blue-Shield of Wiconsin |
| L4F | New York | Empire Blue-Cross Blue-Shield of New York |
| L4G | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| L4H | California | Anthem Blue-Cross |
| L4I | - | Unallocated/Not Assigned |
| L4J | - | Unallocated/Not Assigned |
| L4K | Illinois | Blue-Cross Blue-Shield of Illinois |
| L4L | Illinois | Blue-Cross Blue-Shield of Illinois |
| L4M | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| L4N | Alaska | Premera Blue-Cross of Alaska |
| L4O | - | Unallocated/Not Assigned |
| L4P | New York | Empire Blue-Cross Blue-Shield of New York |
| L4Q | - | Unallocated/Not Assigned |
| L4R | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| L4S | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| L4T | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| L4U | Illinois | Blue-Cross Blue-Shield of Illinois |
| L4V | - | Unallocated/Not Assigned |
| L4W | Alabama | Blue-Cross Blue-Shield of Alabama |
| L4X | Wisconsin | Anthem Blue-Cross Blue-Shield of Wiconsin |
| L4Y | - | Unallocated/Not Assigned |
| L4Z | Illinois | Blue-Cross Blue-Shield of Illinois |
| L5A | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| L5B | Iowa | Wellmark |
| L5C | Texas | Blue-Cross Blue-Shield of Texas |
| L5D | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| L5E | Iowa | Wellmark |
| L5F | Iowa | Wellmark |
| L5G | Iowa | Wellmark |
| L5H | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| L5I | Iowa | Wellmark |
| L5J | Iowa | Wellmark |
| L5K | Illinois | Blue-Cross Blue-Shield of Illinois |
| L5L | Western New York | Highmark Blue-Cross Blue-Shield of Western New York |
| L5M | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| L5N | Alaska | Premera Blue-Cross of Alaska |
| L5O | - | Unallocated/Not Assigned |
| L5P | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| L5Q | - | Unallocated/Not Assigned |
| L5R | California | Anthem Blue-Cross |
| L5S | Illinois | Blue-Cross Blue-Shield of Illinois |
| L5T | Alaska | Premera Blue-Cross of Alaska |
| L5U | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| L5V | - | Unallocated/Not Assigned |
| L5W | Alabama | Blue-Cross Blue-Shield of Alabama |
| L5X | - | Unallocated/Not Assigned |
| L5Y | - | Unallocated/Not Assigned |
| L5Z | - | Unallocated/Not Assigned |
| L6A | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| L6B | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| L6C | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| L6D | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| L6E | Alabama | Blue-Cross Blue-Shield of Alabama |
| L6F | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| L6G | - | Unallocated/Not Assigned |
| L6H | Illinois | Blue-Cross Blue-Shield of Illinois |
| L6I | - | Unallocated/Not Assigned |
| L6J | - | Unallocated/Not Assigned |
| L6K | Illinois | Blue-Cross Blue-Shield of Illinois |
| L6L | - | Unallocated/Not Assigned |
| L6M | California | Anthem Blue-Cross |
| L6N | Texas | Blue-Cross Blue-Shield of Texas |
| L6O | - | Unallocated/Not Assigned |
| L6P | - | Unallocated/Not Assigned |
| L6Q | - | Unallocated/Not Assigned |
| L6R | - | Unallocated/Not Assigned |
| L6S | Illinois | Blue-Cross Blue-Shield of Illinois |
| L6T | - | Unallocated/Not Assigned |
| L6U | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| L6V | - | Unallocated/Not Assigned |
| L6W | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| L6X | - | Unallocated/Not Assigned |
| L6Y | - | Unallocated/Not Assigned |
| L6Z | - | Unallocated/Not Assigned |
| L7A | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| L7B | - | Unallocated/Not Assigned |
| L7C | Illinois | Blue-Cross Blue-Shield of Illinois |
| L7D | - | Unallocated/Not Assigned |
| L7E | Alabama | Blue-Cross Blue-Shield of Alabama |
| L7F | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| L7G | - | Unallocated/Not Assigned |
| L7H | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| L7I | - | Unallocated/Not Assigned |
| L7J | - | Unallocated/Not Assigned |
| L7K | - | Unallocated/Not Assigned |
| L7L | - | Unallocated/Not Assigned |
| L7M | Maine | Anthem Blue-Cross Blue-Shield of Maine |
| L7N | - | Unallocated/Not Assigned |
| L7O | - | Unallocated/Not Assigned |
| L7P | - | Unallocated/Not Assigned |
| L7Q | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| L7R | - | Unallocated/Not Assigned |
| L7S | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| L7T | - | Unallocated/Not Assigned |
| L7U | California | Anthem Blue-Cross |
| L7V | - | Unallocated/Not Assigned |
| L7W | Alabama | Blue-Cross Blue-Shield of Alabama |
| L7X | - | Unallocated/Not Assigned |
| L7Y | - | Unallocated/Not Assigned |
| L7Z | - | Unallocated/Not Assigned |
| L8A | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| L8B | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| L8C | Illinois | Blue-Cross Blue-Shield of Illinois |
| L8D | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| L8E | - | Unallocated/Not Assigned |
| L8F | - | Unallocated/Not Assigned |
| L8G | - | Unallocated/Not Assigned |
| L8H | Vermont | Blue-Cross of Vermont |
| L8I | - | Unallocated/Not Assigned |
| L8J | - | Unallocated/Not Assigned |
| L8K | - | Unallocated/Not Assigned |
| L8L | New York | Empire Blue-Cross Blue-Shield of New York |
| L8M | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| L8N | - | Unallocated/Not Assigned |
| L8O | - | Unallocated/Not Assigned |
| L8P | - | Unallocated/Not Assigned |
| L8Q | - | Unallocated/Not Assigned |
| L8R | - | Unallocated/Not Assigned |
| L8S | Illinois | Blue-Cross Blue-Shield of Illinois |
| L8T | - | Unallocated/Not Assigned |
| L8U | - | Unallocated/Not Assigned |
| L8V | - | Unallocated/Not Assigned |
| L8W | Alabama | Blue-Cross Blue-Shield of Alabama |
| L8X | - | Unallocated/Not Assigned |
| L8Y | - | Unallocated/Not Assigned |
| L8Z | - | Unallocated/Not Assigned |
| L9A | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| L9B | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| L9C | Vermont | Blue-Cross of Vermont |
| L9D | - | Unallocated/Not Assigned |
| L9E | New York | Empire Blue-Cross Blue-Shield of New York |
| L9F | - | Unallocated/Not Assigned |
| L9G | - | Unallocated/Not Assigned |
| L9H | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| L9I | - | Unallocated/Not Assigned |
| L9J | - | Unallocated/Not Assigned |
| L9K | - | Unallocated/Not Assigned |
| L9L | - | Unallocated/Not Assigned |
| L9M | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| L9N | - | Unallocated/Not Assigned |
| L9O | - | Unallocated/Not Assigned |
| L9P | Wisconsin | Anthem Blue-Cross Blue-Shield of Wiconsin |
| L9Q | - | Unallocated/Not Assigned |
| L9R | - | Unallocated/Not Assigned |
| L9S | Illinois | Blue-Cross Blue-Shield of Illinois |
| L9T | Wisconsin | Anthem Blue-Cross Blue-Shield of Wiconsin |
| L9U | - | Unallocated/Not Assigned |
| L9V | New York | Empire Blue-Cross Blue-Shield of New York |
| L9W | Alabama | Blue-Cross Blue-Shield of Alabama |
| L9X | California | Anthem Blue-Cross |
| L9Y | - | Unallocated/Not Assigned |
| L9Z | - | Unallocated/Not Assigned |