| G2A | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| G2B | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| G2C | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| G2D | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| G2E | Illinois | Blue-Cross Blue-Shield of Illinois |
| G2F | Illinois | Blue-Cross Blue-Shield of Illinois |
| G2G | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G2H | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| G2I | - | Unallocated/Not Assigned |
| G2J | Texas | Blue-Cross Blue-Shield of Texas |
| G2K | Illinois | Blue-Cross Blue-Shield of Illinois |
| G2L | California | Anthem Blue-Cross |
| G2M | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G2N | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| G2O | - | Unallocated/Not Assigned |
| G2P | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| G2Q | California | Anthem Blue-Cross |
| G2R | Illinois | Blue-Cross Blue-Shield of Illinois |
| G2S | California | Anthem Blue-Cross |
| G2T | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| G2U | California | Anthem Blue-Cross |
| G2V | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| G2W | Illinois | Blue-Cross Blue-Shield of Illinois |
| G2X | Texas | Blue-Cross Blue-Shield of Texas |
| G2Y | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| G2Z | California | Anthem Blue-Cross |
| G3A | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| G3B | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| G3C | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| G3D | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| G3E | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| G3F | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G3G | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| G3H | Texas | Blue-Cross Blue-Shield of Texas |
| G3I | California | Anthem Blue-Cross |
| G3J | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G3K | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| G3L | Illinois | Blue-Cross Blue-Shield of Illinois |
| G3M | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G3N | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G3O | - | Unallocated/Not Assigned |
| G3P | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G3Q | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G3R | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| G3S | California | Anthem Blue-Cross |
| G3T | New York (Northeastern) | Blue-Shield of Northeastern New York |
| G3U | Michigan | Blue-Cross Blue-Shield of Michigan |
| G3V | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| G3W | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G3X | Michigan | Blue-Cross Blue-Shield of Michigan |
| G3Y | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| G3Z | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G4A | - | Unallocated/Not Assigned |
| G4B | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G4C | Illinois | Blue-Cross Blue-Shield of Illinois |
| G4D | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G4E | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G4F | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| G4G | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G4H | Texas | Blue-Cross Blue-Shield of Texas |
| G4I | - | Unallocated/Not Assigned |
| G4J | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G4K | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G4L | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G4M | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| G4N | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G4O | - | Unallocated/Not Assigned |
| G4P | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G4Q | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G4R | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G4S | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G4T | Illinois | Blue-Cross Blue-Shield of Illinois |
| G4U | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G4V | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G4W | - | Unallocated/Not Assigned |
| G4X | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G4Y | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G4Z | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G5A | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| G5B | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| G5C | Texas | Blue-Cross Blue-Shield of Texas |
| G5D | Texas | Blue-Cross Blue-Shield of Texas |
| G5E | Texas | Blue-Cross Blue-Shield of Texas |
| G5F | Texas | Blue-Cross Blue-Shield of Texas |
| G5G | Texas | Blue-Cross Blue-Shield of Texas |
| G5H | Texas | Blue-Cross Blue-Shield of Texas |
| G5I | - | Unallocated/Not Assigned |
| G5J | Illinois | Blue-Cross Blue-Shield of Illinois |
| G5K | Texas | Blue-Cross Blue-Shield of Texas |
| G5L | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| G5M | Texas | Blue-Cross Blue-Shield of Texas |
| G5N | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| G5O | - | Unallocated/Not Assigned |
| G5P | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G5Q | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G5R | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| G5S | California | Anthem Blue-Cross |
| G5T | Illinois | Blue-Cross Blue-Shield of Illinois |
| G5U | - | Unallocated/Not Assigned |
| G5V | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G5W | - | Unallocated/Not Assigned |
| G5X | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G5Y | - | Unallocated/Not Assigned |
| G5Z | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| G6A | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G6B | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G6C | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G6D | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| G6E | New York | Empire Blue-Cross Blue-Shield of New York |
| G6F | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| G6G | Wiconsin | Anthem Blue-Cross Blue-Shield of Wiconsin |
| G6H | Texas | Blue-Cross Blue-Shield of Texas |
| G6I | - | Unallocated/Not Assigned |
| G6J | - | Unallocated/Not Assigned |
| G6K | Illinois | Blue-Cross Blue-Shield of Illinois |
| G6L | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| G6M | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G6N | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G6O | - | Unallocated/Not Assigned |
| G6P | California | Anthem Blue-Cross |
| G6Q | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G6R | Illinois | Blue-Cross Blue-Shield of Illinois |
| G6S | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G6T | Illinois | Blue-Cross Blue-Shield of Illinois |
| G6U | - | Unallocated/Not Assigned |
| G6V | - | Unallocated/Not Assigned |
| G6W | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| G6X | - | Unallocated/Not Assigned |
| G6Y | - | Unallocated/Not Assigned |
| G6Z | - | Unallocated/Not Assigned |
| G7A | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| G7B | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| G7C | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G7D | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| G7E | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| G7F | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G7G | - | Unallocated/Not Assigned |
| G7H | Texas | Blue-Cross Blue-Shield of Texas |
| G7I | - | Unallocated/Not Assigned |
| G7J | - | Unallocated/Not Assigned |
| G7K | - | Unallocated/Not Assigned |
| G7L | - | Unallocated/Not Assigned |
| G7M | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| G7N | - | Unallocated/Not Assigned |
| G7O | - | Unallocated/Not Assigned |
| G7P | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| G7Q | - | Unallocated/Not Assigned |
| G7R | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| G7S | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| G7T | Illinois | Blue-Cross Blue-Shield of Illinois |
| G7U | - | Unallocated/Not Assigned |
| G7V | - | Unallocated/Not Assigned |
| G7W | California | Anthem Blue-Cross |
| G7X | - | Unallocated/Not Assigned |
| G7Y | - | Unallocated/Not Assigned |
| G7Z | - | Unallocated/Not Assigned |
| G8A | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| G8B | California | Anthem Blue-Cross |
| G8C | Illinois | Blue-Cross Blue-Shield of Illinois |
| G8D | - | Unallocated/Not Assigned |
| G8E | - | Unallocated/Not Assigned |
| G8F | Montana | Blue-Cross Blue-Shield of Montana |
| G8G | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G8H | Texas | Blue-Cross Blue-Shield of Texas |
| G8I | - | Unallocated/Not Assigned |
| G8J | - | Unallocated/Not Assigned |
| G8K | - | Unallocated/Not Assigned |
| G8L | - | Unallocated/Not Assigned |
| G8M | Texas | Blue-Cross Blue-Shield of Texas |
| G8N | - | Unallocated/Not Assigned |
| G8O | - | Unallocated/Not Assigned |
| G8P | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G8Q | - | Unallocated/Not Assigned |
| G8R | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G8S | Illinois | Blue-Cross Blue-Shield of Illinois |
| G8T | Illinois | Blue-Cross Blue-Shield of Illinois |
| G8U | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| G8V | - | Unallocated/Not Assigned |
| G8W | - | Unallocated/Not Assigned |
| G8X | - | Unallocated/Not Assigned |
| G8Y | - | Unallocated/Not Assigned |
| G8Z | - | Unallocated/Not Assigned |
| G9A | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| G9B | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| G9C | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| G9D | - | Unallocated/Not Assigned |
| G9E | - | Unallocated/Not Assigned |
| G9F | California | Anthem Blue-Cross |
| G9G | California | Anthem Blue-Cross |
| G9H | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G9I | - | Unallocated/Not Assigned |
| G9J | - | Unallocated/Not Assigned |
| G9K | - | Unallocated/Not Assigned |
| G9L | - | Unallocated/Not Assigned |
| G9M | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| G9N | New York | Empire Blue-Cross Blue-Shield of New York |
| G9O | - | Unallocated/Not Assigned |
| G9P | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| G9Q | - | Unallocated/Not Assigned |
| G9R | California | Anthem Blue-Cross |
| G9S | - | Unallocated/Not Assigned |
| G9T | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| G9U | - | Unallocated/Not Assigned |
| G9V | - | Unallocated/Not Assigned |
| G9W | California | Anthem Blue-Cross |
| G9X | California | Anthem Blue-Cross |
| G9Y | - | Unallocated/Not Assigned |
| G9Z | - | Unallocated/Not Assigned |