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BCBS Alpha Numeric Prefix from U2A to U9Z (Update 2025)
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BCBS (Blue Cross Blue Shield) member ID prefixes are crucial for medical billers, healthcare providers, and patients to identify specific BCBS healthcare plans. This article presents a comprehensive list of BCBS alpha numeric prefixes ranging from U2A to U9Z, along with the corresponding home plan names, states, and official websites for further reference.
List of BCBS Alpha Numeric Prefix from U2A to U9Z
| BCBS Alpha Numeric Prefix | BCBS Home Plan Name | State | BCBS Home Plan Website |
|---|---|---|---|
| U2A | BCBS of Texas | Texas | bcbstx.com |
| U2B | Empire BCBS of New York | New York | anthem.com |
| U2C | Empire BCBS of New York | New York | anthem.com |
| U2D | Empire BCBS of New York | New York | anthem.com |
| U2E | Empire BCBS of New York | New York | anthem.com |
| U2F | BCBS of Illinois | Illinois | bcbsil.com |
| U2G | Arkansas BCBS | Arkansas | arkansasbluecross.com |
| U2H | Empire BCBS of New York | New York | anthem.com |
| U2I | Empire BCBS of New York | New York | anthem.com |
| U2J | Empire BCBS of New York | New York | anthem.com |
| U2K | Empire BCBS of New York | New York | anthem.com |
| U2L | Empire BCBS of New York | New York | anthem.com |
| U2M | Blue-Cross Blue-Shield of Oklahoma | Oklahoma | bcbsok.com |
| U2N | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U2O | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U2P | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U2Q | Empire BCBS of New York | New York | anthem.com |
| U2R | Empire BCBS of New York | New York | anthem.com |
| U2S | BCBS of Texas | Texas | bcbstx.com |
| U2T | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U2U | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U2V | Empire BCBS of New York | New York | anthem.com |
| U2W | Empire BCBS of New York | New York | anthem.com |
| U2X | Empire BCBS of New York | New York | anthem.com |
| U2Y | Empire BCBS of New York | New York | anthem.com |
| U2Z | BCBS of Western New York | New York (Western) | bcbswny.com |
| U3A | Anthem Blue Cross of California | California | anthem.com/ca |
| U3B | Anthem Blue Cross of California | California | anthem.com/ca |
| U3C | Anthem Blue Cross of California | California | anthem.com/ca |
| U3D | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| U3E | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| U3F | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| U3G | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| U3H | Empire BCBS of New York | New York | anthem.com |
| U3I | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U3J | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U3K | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U3L | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U3M | Anthem Blue Cross of Missouri | Missouri | anthem.com |
| U3N | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U3O | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U3P | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| U3Q | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U3R | BCBS of Texas | Texas | bcbstx.com |
| U3S | BCBS of Illinois | Illinois | bcbsil.com |
| U3T | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U3U | BCBS of Illinois | Illinois | bcbsil.com |
| U3V | BCBS of Illinois | Illinois | bcbsil.com |
| U3W | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U3X | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U3Y | BCBS of Illinois | Illinois | bcbsil.com |
| U3Z | Anthem Blue Cross of California | California | anthem.com/ca |
| U4A | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | carefirst.com |
| U4B | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U4C | Empire BCBS of New York | New York | anthem.com |
| U4D | Anthem Blue-Cross Blue-Shield of Wisconsin | Wisconsin | providers.anthem.com |
| U4E | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U4F | BCBS of Illinois | Illinois | bcbsil.com |
| U4G | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| U4H | Anthem BCBS of Georgia | Georgia | anthem.com |
| U4I | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U4J | Anthem BCBS of Georgia | Georgia | anthem.com |
| U4K | Anthem Blue Cross of California | California | anthem.com/ca |
| U4L | Anthem Blue Cross of California | California | anthem.com/ca |
| U4M | BCBS of Illinois | Illinois | bcbsil.com |
| U4N | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U4O | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U4P | BCBS of Illinois | Illinois | bcbsil.com |
| U4Q | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U4R | BCBS of Texas | Texas | bcbstx.com |
| U4S | BCBS of Texas | Texas | bcbstx.com |
| U4T | BCBS of Illinois | Illinois | bcbsil.com |
| U4U | Anthem Blue Cross of California | California | anthem.com/ca |
| U4V | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U4W | Anthem BCBS of Ohio | Ohio | anthem.com/contact-us/ohio |
| U4X | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U4Y | Empire BCBS of New York | New York | anthem.com |
| U4Z | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5A | BCBS of Alabama | Alabama | bcbsal.org |
| U5B | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5C | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| U5D | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5E | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5F | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5G | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5H | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5I | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5J | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5K | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5L | Carefirst Blue Cross Blue-Shield | Maryland/District of Columbia/Northern Virginia | carefirst.com |
| U5M | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| U5N | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U5O | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5P | BCBS of Alabama | Alabama | bcbsal.org |
| U5Q | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5R | BCBS of Texas | Texas | bcbstx.com |
| U5S | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5T | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5U | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5V | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5W | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5X | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5Y | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U5Z | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6A | BCBS of Texas | Texas | bcbstx.com |
| U6B | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6C | Anthem Blue Cross of California | California | anthem.com/ca |
| U6D | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6E | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6F | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6G | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6H | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6I | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6J | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6K | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6L | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6M | Empire BCBS of New York | New York | anthem.com |
| U6N | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U6O | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6P | BCBS of Illinois | Illinois | bcbsil.com |
| U6Q | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6R | BCBS of Texas | Texas | bcbstx.com |
| U6S | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U6T | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U6U | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6V | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6W | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6X | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6Y | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U6Z | Anthem BCBS of Indiana | Indiana | providers.anthem.com |
| U7A | BCBS of Texas | Texas | bcbstx.com |
| U7B | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7C | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7D | Anthem Blue Cross of California | California | anthem.com/ca |
| U7E | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7F | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7G | Empire BCBS of New York | New York | anthem.com |
| U7H | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U7I | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7J | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7K | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7L | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7M | Empire BCBS of New York | New York | anthem.com |
| U7N | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7O | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7P | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U7Q | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7R | BCBS of Texas | Texas | bcbstx.com |
| U7S | Anthem Blue Cross of California | California | anthem.com/ca |
| U7T | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U7U | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U7V | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7W | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7X | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7Y | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U7Z | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8A | BCBS of Texas | Texas | bcbstx.com |
| U8B | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8C | BCBS of Illinois | Illinois | bcbsil.com |
| U8D | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8E | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8F | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8G | BCBS of Illinois | Illinois | bcbsil.com |
| U8H | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8I | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8J | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8K | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8L | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8M | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8N | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8O | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8P | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8Q | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8R | BCBS of Texas | Texas | bcbstx.com |
| U8S | BCBS of Massachusetts | Massachusetts | bluecrossma.org |
| U8T | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8U | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8V | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8W | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8X | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8Y | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U8Z | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9A | Anthem Blue Cross of California | California | anthem.com/ca |
| U9B | BCBS of Texas | Texas | bcbstx.com |
| U9C | Highmark BCBS of Pennsylvania | Pennsylvania | highmarkbcbs.com |
| U9D | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9E | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9F | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9G | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9H | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9I | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9J | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9K | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9L | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9M | BCBS of Illinois | Illinois | bcbsil.com |
| U9N | Empire BCBS of New York | New York | anthem.com |
| U9O | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9P | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U9Q | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9R | Premera Blue Cross of Alaska | Alaska | premera.com |
| U9S | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U9T | Regence BCBS | Oregon/Idaho/Utah/Washington | regence.com |
| U9U | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9V | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9W | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9X | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9Y | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
| U9Z | Prefix Unallocated/Not Assigned | Yet to be assigned | Yet to be assigned |
Conclusion
Understanding these prefixes is essential for streamlining the billing process, and facilitating efficient communication between medical billers and insurance providers. If you have any inquiries or need further assistance, feel free to reach out to Texmed Billing Solutions for expert help.