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BCBS Alpha Numeric Prefix from E2A to E9Z (UPDATE 2025)
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BCBS member ID prefixes serve as a critical identifier for medical billers, healthcare providers, and patients, helping them recognize their specific BCBS healthcare plan. This comprehensive list outlines the BCBS prefixes ranging from E2A to E9Z, including the associated home plan names and websites.
Understanding these prefixes can enhance claims processing and reduce billing errors. Below, you’ll find the complete list of BCBS alpha numeric prefixes along with pertinent information.
List of BCBS Alpha Numeric Prefix from E2A to E9Z
| BCBS Alpha Numeric Prefix | BCBS Home Plan Name | State | BCBS Home Plan Website |
|---|---|---|---|
| E2A | BCBS of Texas | Texas | bcbstx.com |
| E2B | BCBS of Texas | Texas | bcbstx.com |
| E2C | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| E2D | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E2E | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| E2F | Anthem Blue Cross of California | California | anthem.com |
| E2G | Anthem Blue Cross of California | California | anthem.com |
| E2H | Anthem Blue Cross of California | California | anthem.com |
| E2I | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E2J | Anthem Blue Cross of California | California | anthem.com |
| E2K | BCBS of Illinois | Illinois | bcbsil.com |
| E2L | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| E2M | BCBS of Texas | Texas | bcbstx.com |
| E2N | BCBS of Illinois | Illinois | bcbsil.com |
| E2O | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E2P | Anthem Blue Cross of California | California | anthem.com |
| E2Q | Anthem Blue Cross of California | California | anthem.com |
| E2R | Anthem Blue Cross of California | California | anthem.com |
| E2S | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| E2T | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| E2U | Anthem Blue Cross of California | California | anthem.com |
| E2V | BCBS of Illinois | Illinois | bcbsil.com |
| E2W | Anthem Blue Cross of California | California | anthem.com |
| E2X | Anthem Blue Cross of California | California | anthem.com |
| E2Y | Anthem Blue Cross of California | California | anthem.com |
| E2Z | Anthem Blue Cross of California | California | anthem.com |
| E3A | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| E3B | Anthem Blue Cross of California | California | anthem.com |
| E3C | Anthem Blue Cross of California | California | anthem.com |
| E3D | Anthem Blue Cross of California | California | anthem.com |
| E3E | Anthem Blue Cross of California | California | anthem.com |
| E3F | Anthem Blue Cross of California | California | anthem.com |
| E3G | BCBS of Illinois | Illinois | bcbsil.com |
| E3H | Anthem Blue Cross of California | California | anthem.com |
| E3I | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E3J | Anthem Blue Cross of California | California | anthem.com |
| E3K | Anthem Blue Cross of California | California | anthem.com |
| E3L | Empire BCBS of New York | New York | empireblue.com |
| E3M | Anthem BCBS of Wisconsin | Wisconsin | providers.anthem.com |
| E3N | Premera BCBS of Alaska | Alaska | premera.com |
| E3O | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E3P | Anthem BCBS of Wisconsin | Wisconsin | providers.anthem.com |
| E3Q | Anthem Blue Cross of California | California | anthem.com |
| E3R | Anthem BCBS of Ohio | Ohio | anthem.com |
| E3S | BCBS of Illinois | Illinois | bcbsil.com |
| E3T | Anthem Blue Cross of California | California | anthem.com |
| E3U | Empire BCBS of New York | New York | empireblue.com |
| E3V | BCBS of Illinois | Illinois | bcbsil.com |
| E3W | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E3X | Anthem BCBS of Wisconsin | Wisconsin | providers.anthem.com |
| E3Y | Anthem BCBS of Georgia | Georgia | anthem.com |
| E3Z | Anthem BCBS of Wisconsin | Wisconsin | providers.anthem.com |
| E4A | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| E4B | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| E4C | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| E4D | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| E4E | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| E4F | Anthem Blue Cross of California | California | anthem.com |
| E4G | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E4H | Anthem Blue Cross of California | California | anthem.com |
| E4I | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E4J | BCBS of Illinois | Illinois | bcbsil.com |
| E4K | Anthem BCBS of Georgia | Georgia | anthem.com |
| E4L | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| E4M | Anthem BCBS of Georgia | Georgia | anthem.com |
| E4N | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E4O | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E4P | Empire BCBS of New York | New York | empireblue.com |
| E4Q | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| E4R | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E4S | Anthem BCBS of Ohio | Ohio | anthem.com |
| E4T | Anthem BCBS of Colorado | Colorado | anthem.com |
| E4U | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E4V | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E4W | Empire BCBS of New York | New York | empireblue.com |
| E4X | Anthem BCBS of Wisconsin | Wisconsin | providers.anthem.com |
| E4Y | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E4Z | BCBS of Tennessee | Tennessee | provider.bcbst.com |
| E5A | BCBS of Texas | Texas | bcbstx.com |
| E5B | Anthem Blue Cross of California | California | anthem.com |
| E5C | BCBS of Rhode Island | Rhode Island | bcbsri.com |
| E5D | Premera BCBS of Alaska | Alaska | premera.com |
| E5E | Anthem BCBS of Nevada | Nevada | providers.anthem.com |
| E5F | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E5G | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E5H | Premera BCBS of Alaska | Alaska | premera.com |
| E5I | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E5J | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E5K | BCBS of Texas | Texas | bcbstx.com |
| E5L | BCBS of Texas | Texas | bcbstx.com |
| E5M | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E5N | BCBS of Texas | Texas | bcbstx.com |
| E5O | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E5P | Anthem BCBS of Missouri | Missouri | anthem.com |
| E5Q | Anthem BCBS of Nevada | Nevada | providers.anthem.com |
| E5R | Anthem BCBS of Missouri | Missouri | anthem.com |
| E5S | BCBS of Texas | Texas | bcbstx.com |
| E5T | BCBS of Alabama | Alabama | bcbsal.org |
| E5U | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E5V | BCBS of Texas | Texas | bcbstx.com |
| E5W | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E5X | Premera BCBS of Alaska | Alaska | premera.com |
| E5Y | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E5Z | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E6A | Anthem BCBS of Ohio | Ohio | anthem.com |
| E6B | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E6C | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| E6D | Empire BCBS of New York | New York | empireblue.com |
| E6E | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E6F | BCBS of Illinois | Illinois | bcbsil.com |
| E6G | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E6H | Anthem BCBS of New Hampshire | New Hampshire | anthem.com |
| E6I | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E6J | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E6K | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E6L | Anthem BCBS of Nevada | Nevada | providers.anthem.com |
| E6M | Anthem BCBS of Ohio | Ohio | anthem.com |
| E6N | BCBS of Texas | Texas | bcbstx.com |
| E6O | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E6P | Anthem BCBS of Missouri | Missouri | anthem.com |
| E6Q | Anthem BCBS of Nevada | Nevada | providers.anthem.com |
| E6R | Anthem BCBS of Ohio | Ohio | anthem.com |
| E6S | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E6T | Anthem BCBS of Wisconsin | Wisconsin | providers.anthem.com |
| E6U | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E6V | Empire BCBS of New York | New York | empireblue.com |
| E6W | Anthem BCBS of Nevada | Nevada | providers.anthem.com |
| E6X | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E6Y | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E6Z | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E7A | Anthem BCBS of Georgia | Georgia | anthem.com |
| E7B | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| E7C | Anthem Blue-Cross Blue-Shield of Kentucky | Kentucky | anthem.com |
| E7D | Anthem BCBS of Missouri | Missouri | anthem.com |
| E7E | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| E7F | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| E7G | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E7H | Anthem BCBS of Ohio | Ohio | anthem.com |
| E7I | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E7J | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E7K | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E7L | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E7M | Anthem Blue Cross of California | California | anthem.com |
| E7N | BCBS of Texas | Texas | bcbstx.com |
| E7O | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E7P | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E7Q | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| E7R | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E7S | Anthem Blue Cross of California | California | anthem.com |
| E7T | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E7U | BCBS of Illinois | Illinois | bcbsil.com |
| E7V | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E7W | Anthem BCBS of Wisconsin | Wisconsin | providers.anthem.com |
| E7X | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E7Y | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E7Z | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| E8A | Independence Blue-Cross of Pennsylvania | Pennsylvania | ibx.com |
| E8B | Anthem Blue Cross of California | California | anthem.com |
| E8C | BCBS of Texas | Texas | bcbstx.com |
| E8D | BCBS of Illinois | Illinois | bcbsil.com |
| E8E | BCBS of Texas | Texas | bcbstx.com |
| E8F | Empire BCBS of New York | New York | empireblue.com |
| E8G | Premera BCBS of Alaska | Alaska | premera.com |
| E8H | Anthem BCBS of Missouri | Missouri | anthem.com |
| E8I | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E8J | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E8K | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E8L | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E8M | BCBS of Illinois | Illinois | bcbsil.com |
| E8N | BCBS of Texas | Texas | bcbstx.com |
| E8O | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E8P | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E8Q | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| E8R | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E8S | Anthem Blue Cross of California | California | anthem.com |
| E8T | Anthem Blue Cross of California | California | anthem.com |
| E8U | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E8V | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E8W | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E8X | Anthem Blue Cross of California | California | anthem.com |
| E8Y | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E8Z | Anthem BCBS of Nevada | Nevada | providers.anthem.com |
| E9A | Anthem BCBS of Wisconsin | Wisconsin | providers.anthem.com |
| E9B | Anthem BCBS of Wisconsin | Wisconsin | providers.anthem.com |
| E9C | BCBS of Texas | Texas | bcbstx.com |
| E9D | Anthem BCBS of Missouri | Missouri | anthem.com |
| E9E | BCBS of Texas | Texas | bcbstx.com |
| E9F | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E9G | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E9H | BCBS of Texas | Texas | bcbstx.com |
| E9I | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E9J | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E9K | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E9L | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E9M | Anthem BCBS of Virginia | Virginia | abcbsva.anthem.com |
| E9N | BCBS of Illinois | Illinois | bcbsil.com |
| E9O | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E9P | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E9Q | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E9R | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| E9S | Anthem BCBS of Missouri | Missouri | anthem.com |
| E9T | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
| E9U | Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| E9V | Anthem BCBS of Ohio | Ohio | anthem.com |
| E9W | Premera BCBS of Alaska | Alaska | premera.com |
| E9X | Anthem Blue Cross of California | California | anthem.com |
| E9Y | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| E9Z | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | provider.carefirst.com |
In conclusion, this comprehensive list categorizes various BCBS prefixes, helping healthcare professionals and patients easily identify their respective plans. By maintaining clear and updated information on all prefixes, billing processes can become more efficient and effective, resulting in better service for all parties involved.
For more information or if you need assistance with medical billing, please connect with Texmed Billing Solutions at support@texmed.us.