| H2A | Illinois | Blue-Cross Blue-Shield of Illinois |
| H2B | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| H2C | Illinois | Blue-Cross Blue-Shield of Illinois |
| H2D | Illinois | Blue-Cross Blue-Shield of Illinois |
| H2E | Illinois | Blue-Cross Blue-Shield of Illinois |
| H2F | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H2G | Texas | Blue-Cross Blue-Shield of Texas |
| H2H | Arkansas | Arkansas Blue-Cross Blue-Shield |
| H2I | - | Unallocated/Not Assigned |
| H2J | Illinois | Blue-Cross Blue-Shield of Illinois |
| H2K | Illinois | Blue-Cross Blue-Shield of Illinois |
| H2L | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H2M | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H2N | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H2O | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H2P | Illinois | Blue-Cross Blue-Shield of Illinois |
| H2Q | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H2R | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| H2S | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H2T | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| H2U | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H2V | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| H2W | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H2X | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| H2Y | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H2Z | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H3A | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H3B | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H3C | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H3D | Illinois | Blue-Cross Blue-Shield of Illinois |
| H3E | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H3F | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H3G | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| H3H | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H3I | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H3J | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H3K | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H3L | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H3M | Texas | Blue-Cross Blue-Shield of Texas |
| H3N | California | Anthem Blue-Cross |
| H3O | - | Unallocated/Not Assigned |
| H3P | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H3Q | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H3R | Illinois | Blue-Cross Blue-Shield of Illinois |
| H3S | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H3T | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| H3U | Illinois | Blue-Cross Blue-Shield of Illinois |
| H3V | Illinois | Blue-Cross Blue-Shield of Illinois |
| H3W | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H3X | Illinois | Blue-Cross Blue-Shield of Illinois |
| H3Y | Illinois | Blue-Cross Blue-Shield of Illinois |
| H3Z | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H4A | Illinois | Blue-Cross Blue-Shield of Illinois |
| H4B | Illinois | Blue-Cross Blue-Shield of Illinois |
| H4C | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H4D | Illinois | Blue-Cross Blue-Shield of Illinois |
| H4E | Illinois | Blue-Cross Blue-Shield of Illinois |
| H4F | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H4G | California | Anthem Blue-Cross |
| H4H | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| H4I | Northeastern New York | Highmark Blue-Shield of Northeastern New York |
| H4J | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H4K | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H4L | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H4M | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H4N | California | Anthem Blue-Cross |
| H4O | California | Anthem Blue-Cross |
| H4P | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| H4Q | Alabama | Blue-Cross Blue-Shield of Alabama |
| H4R | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| H4S | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H4T | Texas | Blue-Cross Blue-Shield of Texas |
| H4U | Illinois | Blue-Cross Blue-Shield of Illinois |
| H4V | Texas | Blue-Cross Blue-Shield of Texas |
| H4W | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| H4X | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| H4Y | Illinois | Blue-Cross Blue-Shield of Illinois |
| H4Z | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H5A | California | Anthem Blue-Cross |
| H5B | Texas | Blue-Cross Blue-Shield of Texas |
| H5C | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H5D | Texas | Blue-Cross Blue-Shield of Texas |
| H5E | Texas | Blue-Cross Blue-Shield of Texas |
| H5F | Texas | Blue-Cross Blue-Shield of Texas |
| H5G | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H5H | Texas | Blue-Cross Blue-Shield of Texas |
| H5I | - | Unallocated/Not Assigned |
| H5J | Texas | Blue-Cross Blue-Shield of Texas |
| H5K | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H5L | Illinois | Blue-Cross Blue-Shield of Illinois |
| H5M | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H5N | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H5O | - | Unallocated/Not Assigned |
| H5P | California | Anthem Blue-Cross |
| H5Q | California | Anthem Blue-Cross |
| H5R | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H5S | Western New York | Highmark Blue-Cross Blue-Shield of Western New York |
| H5T | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H5U | California | Anthem Blue-Cross |
| H5V | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H5W | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| H5X | Illinois | Blue-Cross Blue-Shield of Illinois |
| H5Y | Illinois | Blue-Cross Blue-Shield of Illinois |
| H5Z | - | Unallocated/Not Assigned |
| H6A | Illinois | Blue-Cross Blue-Shield of Illinois |
| H6B | New York | Empire Blue-Cross Blue-Shield of New York |
| H6C | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H6D | California | Anthem Blue-Cross |
| H6E | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| H6F | New York | Empire Blue-Cross Blue-Shield of New York |
| H6G | California | Anthem Blue-Cross |
| H6H | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| H6I | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H6J | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| H6K | New York | Empire Blue-Cross Blue-Shield of New York |
| H6L | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| H6M | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| H6N | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H6O | - | Unallocated/Not Assigned |
| H6P | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| H6Q | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| H6R | California | Anthem Blue-Cross |
| H6S | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| H6T | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| H6U | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H6V | Delaware | Highmark Blue-Cross Blue-Shield of Delaware |
| H6W | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| H6X | California | Anthem Blue-Cross |
| H6Y | Illinois | Blue-Cross Blue-Shield of Illinois |
| H6Z | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H7A | Illinois | Blue-Cross Blue-Shield of Illinois |
| H7B | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H7C | Illinois | Blue-Cross Blue-Shield of Illinois |
| H7D | Illinois | Blue-Cross Blue-Shield of Illinois |
| H7E | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H7F | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| H7G | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| H7H | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H7I | - | Unallocated/Not Assigned |
| H7J | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H7K | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H7L | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H7M | Michigan | Blue-Cross Blue-Shield of Michigan |
| H7N | Michigan | Blue-Cross Blue-Shield of Michigan |
| H7O | - | Unallocated/Not Assigned |
| H7P | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H7Q | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| H7R | Vermont | Blue-Cross of Vermont |
| H7S | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| H7T | Texas | Blue-Cross Blue-Shield of Texas |
| H7U | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| H7V | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H7W | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H7X | - | Unallocated/Not Assigned |
| H7Y | - | Unallocated/Not Assigned |
| H7Z | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H8A | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H8B | Illinois | Blue-Cross Blue-Shield of Illinois |
| H8C | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| H8D | Illinois | Blue-Cross Blue-Shield of Illinois |
| H8E | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| H8F | Pennsylvania | Highmark Blue-Shield of Pennsylvania |
| H8G | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| H8H | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| H8I | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H8J | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| H8K | Illinois | Blue-Cross Blue-Shield of Illinois |
| H8L | Illinois | Blue-Cross Blue-Shield of Illinois |
| H8M | New York | Empire Blue-Cross Blue-Shield of New York |
| H8N | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| H8O | - | Unallocated/Not Assigned |
| H8P | California | Anthem Blue-Cross |
| H8Q | - | Unallocated/Not Assigned |
| H8R | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| H8S | Florida | Florida Blue |
| H8T | California | Anthem Blue-Cross |
| H8U | Illinois | Blue-Cross Blue-Shield of Illinois |
| H8V | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H8W | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| H8X | California | Anthem Blue-Cross |
| H8Y | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| H8Z | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| H9A | California | Anthem Blue-Cross |
| H9B | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| H9C | Illinois | Blue-Cross Blue-Shield of Illinois |
| H9D | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire |
| H9E | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| H9F | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H9G | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| H9H | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| H9I | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| H9J | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| H9K | Illinois | Blue-Cross Blue-Shield of Illinois |
| H9L | Illinois | Blue-Cross Blue-Shield of Illinois |
| H9M | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| H9N | New York | Empire Blue-Cross Blue-Shield of New York |
| H9O | - | Unallocated/Not Assigned |
| H9P | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| H9Q | California | Anthem Blue-Cross |
| H9R | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| H9S | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| H9T | Vermont | Blue-Cross of Vermont |
| H9U | Illinois | Blue-Cross Blue-Shield of Illinois |
| H9V | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| H9W | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| H9X | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| H9Y | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| H9Z | California | Anthem Blue-Cross |