The BCBS Alpha Numeric Prefix M2A to M9Z is an essential identifier used by healthcare providers, medical billers, and revenue cycle professionals to determine the correct Blue Cross Blue Shield payer. A BCBS alpha numeric prefix appears at the beginning of a member ID and helps identify which BCBS organization administers the insurance plan.
BCBS Alpha Numeric Prefix M2A to M9Z
In real billing workflows, this prefix works as a routing key. When billing teams verify the prefix during eligibility checks, they ensure claims reach the correct payer without unnecessary delays. As a result, providers can reduce denials, improve clean claim rates, and maintain a smooth revenue cycle process.
For a complete directory of BCBS prefixes across all ranges, we have BCBS Prefix List and BCBS Prefix Lookup Tool for you.
BCBS Alpha Numeric Prefix Finder – M2A to M9Z
The BCBS prefix lookup process allows billing teams to identify payer details quickly and accurately. Instead of relying on assumptions based on the patient’s state or employer, providers can use the prefix to confirm the exact BCBS organization responsible for the policy.
Moreover, prefix verification significantly improves billing accuracy. When staff validate prefixes such as M2S, M3Q, or M4P, they reduce claim rejections. Consequently, this step strengthens the entire revenue cycle and ensures faster reimbursements.
BCBS Alpha Numeric Prefix M2A to M9Z List
In the below table here we have listed all the BCBS Alpha Numeric Prefix from M2A to M9Z range.
| BCBS Prefix | State | Company Name | Types Of Health Plans |
|---|---|---|---|
| M2A | – | Unallocated/Not Assigned | |
| M2B | – | Unallocated/Not Assigned | |
| M2C | Illinois | Blue-Cross Blue-Shield of Illinois | Medicare Advantage, POS, EPO |
| M2D | Illinois | Blue-Cross Blue-Shield of Illinois | High-Deductible Health Plan (HDHP), PPO, HMO |
| M2E | Texas | Blue-Cross Blue-Shield of Texas | Traditional Indemnity, Medicaid, EPO |
| M2F | Texas | Blue-Cross Blue-Shield of Texas | POS, Medicare Advantage, High-Deductible Health Plan (HDHP) |
| M2G | Texas | Blue-Cross Blue-Shield of Texas | PPO, EPO, Traditional Indemnity |
| M2H | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | Medicaid, HMO, Medicare Advantage |
| M2I | New York (Western) | Blue-Cross Blue-Shield of Western New York | High-Deductible Health Plan (HDHP), Traditional Indemnity, POS |
| M2J | Illinois | Blue-Cross Blue-Shield of Illinois | EPO, PPO, HMO |
| M2K | Arizona | Blue-Cross Blue-Shield of Arizona | Medicare Advantage, Medicaid, High-Deductible Health Plan (HDHP) |
| M2L | Massachusetts | Blue-Cross Blue-Shield of Massachusetts | POS, Traditional Indemnity, PPO |
| M2M | California | Anthem Blue-Cross | HMO, High-Deductible Health Plan (HDHP), EPO |
| M2N | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | Traditional Indemnity, Medicare Advantage, Medicaid |
| M2O | – | Unallocated/Not Assigned | |
| M2P | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | EPO, Traditional Indemnity, HMO |
| M2Q | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | Medicaid, Medicare Advantage, POS |
| M2R | Texas | Blue-Cross Blue-Shield of Texas | High-Deductible Health Plan (HDHP), PPO, EPO |
| M2S | Illinois | Blue-Cross Blue-Shield of Illinois | HMO, Traditional Indemnity, Medicaid |
| M2T | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | Medicare Advantage, POS, High-Deductible Health Plan (HDHP) |
| M2U | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | PPO, EPO, Traditional Indemnity |
| M2V | Arizona | Blue-Cross Blue-Shield of Arizona | High-Deductible Health Plan (HDHP), HMO, Medicare Advantage |
| M2W | Rhode Island | Blue-Cross Blue-Shield of Rhode Island | Medicaid, Traditional Indemnity, POS |
| M2X | Montana | Blue-Cross Blue-Shield of Montana | EPO, PPO, High-Deductible Health Plan (HDHP) |
| M2Y | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | HMO, Medicare Advantage, Traditional Indemnity |
| M2Z | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | POS, Medicaid, EPO |
| M3A | Kansas | Blue-Cross Blue-Shield of Kansas | PPO, High-Deductible Health Plan (HDHP), Traditional Indemnity |
| M3B | New York (Western) | Blue-Cross Blue-Shield of Western New York | EPO, Medicaid, POS |
| M3C | Rhode Island | Blue-Cross Blue-Shield of Rhode Island | Medicare Advantage, HMO, PPO |
| M3D | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | Traditional Indemnity, High-Deductible Health Plan (HDHP), EPO |
| M3E | Illinois | Blue-Cross Blue-Shield of Illinois | Medicaid, POS, Medicare Advantage |
| M3F | Texas | Blue-Cross Blue-Shield of Texas | HMO, PPO, Traditional Indemnity |
| M3G | Rhode Island | Blue-Cross Blue-Shield of Rhode Island | High-Deductible Health Plan (HDHP), EPO, Medicaid |
| M3H | Minnesota | Blue-Cross Blue-Shield of Minnesota | POS, Medicare Advantage, HMO |
| M3I | – | Unallocated/Not Assigned | |
| M3J | New York | Empire Blue-Cross Blue-Shield of New York | EPO, Medicaid, POS |
| M3K | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | Medicare Advantage, HMO, Traditional Indemnity |
| M3L | Michigan | Blue-Cross Blue-Shield of Michigan | High-Deductible Health Plan (HDHP), PPO, EPO |
| M3M | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | Medicaid, POS, HMO |
| M3N | Maine | Anthem Blue-Cross Blue-Shield of Maine | PPO, Traditional Indemnity, Medicare Advantage |
| M3O | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | High-Deductible Health Plan (HDHP), EPO, Medicaid |
| M3P | Arizona | Blue-Cross Blue-Shield of Arizona | POS, HMO, Traditional Indemnity |
| M3Q | Ohio | Anthem Blue-Cross Blue-Shield of Ohio | Medicare Advantage, PPO, High-Deductible Health Plan (HDHP) |
| M3R | Texas | Blue-Cross Blue-Shield of Texas | Traditional Indemnity, EPO, Medicaid |
| M3S | Illinois | Blue-Cross Blue-Shield of Illinois | POS, HMO, Medicare Advantage |
| M3T | Georgia | Anthem Blue-Cross Blue-Shield of Georgia | High-Deductible Health Plan (HDHP), PPO, Traditional Indemnity |
| M3U | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | Medicaid, EPO, POS |
| M3V | Arizona | Blue-Cross Blue-Shield of Arizona | HMO, Medicare Advantage, High-Deductible Health Plan (HDHP) |
| M3W | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | Traditional Indemnity, PPO, Medicaid |
| M3X | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | EPO, High-Deductible Health Plan (HDHP), HMO |
| M3Y | Georgia | Anthem Blue-Cross Blue-Shield of Georgia | POS, Traditional Indemnity, Medicare Advantage |
| M3Z | Georgia | Anthem Blue-Cross Blue-Shield of Georgia | PPO, Medicaid, EPO |
| M4A | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania | High-Deductible Health Plan (HDHP), HMO, Traditional Indemnity |
| M4B | Pennsylvania | Highmark Blue-Shield of Pennsylvania | POS, Medicare Advantage, PPO |
| M4C | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky | EPO, Medicaid, High-Deductible Health Plan (HDHP) |
| M4D | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | HMO, Traditional Indemnity, POS |
| M4E | Texas | Blue-Cross Blue-Shield of Texas | PPO, Medicare Advantage, Medicaid |
| M4F | Texas | Blue-Cross Blue-Shield of Texas | High-Deductible Health Plan (HDHP), EPO, HMO |
| M4G | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | Traditional Indemnity, POS, PPO |
| M4H | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Medicaid, High-Deductible Health Plan (HDHP), Medicare Advantage |
| M4I | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | EPO, HMO, Traditional Indemnity |
| M4J | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania | POS, PPO, Medicaid |
| M4K | Arizona | Blue-Cross Blue-Shield of Arizona | High-Deductible Health Plan (HDHP), Medicare Advantage, EPO |
| M4L | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania | HMO, Traditional Indemnity, POS |
| M4M | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | PPO, Medicaid, High-Deductible Health Plan (HDHP) |
| M4N | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | Medicare Advantage, EPO, HMO |
| M4O | – | Unallocated/Not Assigned | |
| M4P | Texas | Blue-Cross Blue-Shield of Texas | Medicaid, High-Deductible Health Plan (HDHP), Medicare Advantage |
| M4Q | Michigan | Blue-Cross Blue-Shield of Michigan | EPO, HMO, Traditional Indemnity |
| M4R | New York (Northeastern) | Blue-Shield of Northeastern New York | POS, PPO, Medicaid |
| M4S | Illinois | Blue-Cross Blue-Shield of Illinois | High-Deductible Health Plan (HDHP), Medicare Advantage, EPO |
| M4T | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | HMO, Traditional Indemnity, POS |
| M4U | Minnesota | Blue-Cross Blue-Shield of Minnesota | PPO, Medicaid, High-Deductible Health Plan (HDHP) |
| M4V | North Dakota | Blue-Cross Blue-Shield of North Dakota | Medicare Advantage, EPO, HMO |
| M4W | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | Traditional Indemnity, POS, PPO |
| M4X | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | High-Deductible Health Plan (HDHP), Medicaid, Medicare Advantage |
| M4Y | Idaho | Blue-Cross of Idaho | EPO, HMO, Traditional Indemnity |
| M4Z | Texas | Blue-Cross Blue-Shield of Texas | POS, PPO, Medicaid |
| M5A | Minnesota | Blue-Cross Blue-Shield of Minnesota | High-Deductible Health Plan (HDHP), Medicare Advantage, EPO |
| M5B | Ohio | Anthem Blue-Cross Blue-Shield of Ohio | HMO, Traditional Indemnity, POS |
| M5C | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | PPO, Medicaid, High-Deductible Health Plan (HDHP) |
| M5D | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Medicare Advantage, EPO, HMO |
| M5E | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Traditional Indemnity, POS, PPO |
| M5F | Texas | Blue-Cross Blue-Shield of Texas | High-Deductible Health Plan (HDHP), Medicaid, Medicare Advantage |
| M5G | Michigan | Blue-Cross Blue-Shield of Michigan | EPO, HMO, Traditional Indemnity |
| M5H | Texas | Blue-Cross Blue-Shield of Texas | POS, PPO, Medicaid |
| M5I | California | Anthem Blue-Cross | High-Deductible Health Plan (HDHP), Medicare Advantage, EPO |
| M5J | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | HMO, Traditional Indemnity, POS |
| M5K | Illinois | Blue-Cross Blue-Shield of Illinois | PPO, Medicaid, High-Deductible Health Plan (HDHP) |
| M5L | Pennsylvania | Independence Blue-Cross of Pennsylvania | Medicare Advantage, EPO, HMO |
| M5M | Texas | Blue-Cross Blue-Shield of Texas | Traditional Indemnity, POS, PPO |
| M5N | Massachusetts | Blue-Cross Blue-Shield of Massachusetts | High-Deductible Health Plan (HDHP), Medicaid, Medicare Advantage |
| M5O | – | Unallocated/Not Assigned | |
| M5P | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | POS, PPO, Medicaid |
| M5Q | Georgia | Anthem Blue-Cross Blue-Shield of Georgia | High-Deductible Health Plan (HDHP), Medicare Advantage, EPO |
| M5R | New York (Western) | Blue-Cross Blue-Shield of Western New York | HMO, Traditional Indemnity, POS |
| M5S | Texas | Blue-Cross Blue-Shield of Texas | PPO, Medicaid, High-Deductible Health Plan (HDHP) |
| M5T | Massachusetts | Blue-Cross Blue-Shield of Massachusetts | Medicare Advantage, EPO, HMO |
| M5U | California | Anthem Blue-Cross | Traditional Indemnity, POS, PPO |
| M5V | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | High-Deductible Health Plan (HDHP), Medicaid, Medicare Advantage |
| M5W | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | EPO, HMO, Traditional Indemnity |
| M5X | Illinois | Blue-Cross Blue-Shield of Illinois | POS, PPO, Medicaid |
| M5Y | Oklahoma | Blue-Cross Blue-Shield of Oklahoma | High-Deductible Health Plan (HDHP), Medicare Advantage, EPO |
| M5Z | Colorado | Anthem Blue-Cross Blue-Shield of Colorado | HMO, Traditional Indemnity, POS |
| M6A | Texas | Blue-Cross Blue-Shield of Texas | HMO, EPO, PPO |
| M6B | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire | Medicare Advantage, POS, Medicaid |
| M6C | New York | Empire Blue-Cross Blue-Shield of New York | High-Deductible Health Plan (HDHP), Traditional Indemnity, EPO |
| M6D | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | PPO, Medicaid, POS |
| M6E | New York | Empire Blue-Cross Blue-Shield of New York | Traditional Indemnity, HMO, High-Deductible Health Plan (HDHP) |
| M6F | Texas | Blue-Cross Blue-Shield of Texas | EPO, Medicare Advantage, PPO |
| M6G | New York | Empire Blue-Cross Blue-Shield of New York | Medicaid, POS, Traditional Indemnity |
| M6H | New York | Empire Blue-Cross Blue-Shield of New York | High-Deductible Health Plan (HDHP), EPO, HMO |
| M6I | – | Unallocated/Not Assigned | |
| M6J | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | Traditional Indemnity, Medicaid, High-Deductible Health Plan (HDHP) |
| M6K | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | EPO, HMO, Traditional Indemnity |
| M6L | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | PPO, Medicare Advantage, POS |
| M6M | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky | High-Deductible Health Plan (HDHP), Traditional Indemnity, EPO |
| M6N | Minnesota | Blue-Cross Blue-Shield of Minnesota | Medicaid, PPO, HMO |
| M6O | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | POS, High-Deductible Health Plan (HDHP), Medicare Advantage |
| M6P | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | Traditional Indemnity, EPO, Medicaid |
| M6Q | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | HMO, POS, PPO |
| M6R | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | Medicare Advantage, High-Deductible Health Plan (HDHP), Traditional Indemnity |
| M6S | Illinois | Blue-Cross Blue-Shield of Illinois | PPO, Medicaid, EPO |
| M6T | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | POS, HMO, High-Deductible Health Plan (HDHP) |
| M6U | Ohio | Anthem Blue-Cross Blue-Shield of Ohio | Traditional Indemnity, Medicare Advantage, POS |
| M6V | Nevada | Anthem Blue-Cross Blue-Shield of Nevada | EPO, PPO, Medicaid |
| M6W | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | High-Deductible Health Plan (HDHP), Traditional Indemnity, HMO |
| M6X | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | POS, EPO, Medicare Advantage |
| M6Y | New York | Empire Blue-Cross Blue-Shield of New York | Medicaid, PPO, High-Deductible Health Plan (HDHP) |
| M6Z | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Traditional Indemnity, HMO, POS |
| M7A | California | Anthem Blue-Cross | EPO, Medicare Advantage, High-Deductible Health Plan (HDHP) |
| M7B | Alaska | Premera Blue-Cross Blue-Shield of Alaska | PPO, Traditional Indemnity, Medicaid |
| M7C | New York | Empire Blue-Cross Blue-Shield of New York | HMO, POS, EPO |
| M7D | North Dakota | Blue-Cross Blue-Shield of North Dakota | High-Deductible Health Plan (HDHP), PPO, Medicare Advantage |
| M7E | California | Anthem Blue-Cross | Traditional Indemnity, Medicaid, POS |
| M7F | Texas | Blue-Cross Blue-Shield of Texas | EPO, HMO, PPO |
| M7G | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | Medicare Advantage, High-Deductible Health Plan (HDHP), Traditional Indemnity |
| M7H | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | POS, Medicaid, EPO |
| M7I | – | Unallocated/Not Assigned | |
| M7J | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | Traditional Indemnity, Medicare Advantage, POS |
| M7K | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | EPO, PPO, Medicaid |
| M7L | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | HMO, High-Deductible Health Plan (HDHP), Traditional Indemnity |
| M7M | Colorado | Anthem Blue-Cross Blue-Shield of Colorado | POS, EPO, Medicare Advantage |
| M7N | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | Medicaid, PPO, High-Deductible Health Plan (HDHP) |
| M7O | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | Traditional Indemnity, HMO, POS |
| M7P | Ohio | Anthem Blue-Cross Blue-Shield of Ohio | EPO, Medicare Advantage, High-Deductible Health Plan (HDHP) |
| M7Q | Georgia | Anthem Blue-Cross Blue-Shield of Georgia | PPO, Traditional Indemnity, Medicaid |
| M7R | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | HMO, POS, EPO |
| M7S | Illinois | Blue-Cross Blue-Shield of Illinois | High-Deductible Health Plan (HDHP), PPO, Medicare Advantage |
| M7T | California | Anthem Blue-Cross | Traditional Indemnity, Medicaid, POS |
| M7U | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | EPO, HMO, PPO |
| M7V | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Medicare Advantage, High-Deductible Health Plan (HDHP), Traditional Indemnity |
| M7W | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | POS, Medicaid, EPO |
| M7X | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky | PPO, HMO, High-Deductible Health Plan (HDHP) |
| M7Y | – | Unallocated/Not Assigned | |
| M7Z | Maine | Anthem Blue-Cross Blue-Shield of Maine | EPO, PPO, Medicaid |
| M8A | Colorado | Anthem Blue-Cross Blue-Shield of Colorado | HMO, High-Deductible Health Plan (HDHP), Traditional Indemnity |
| M8B | Illinois | Blue-Cross Blue-Shield of Illinois | POS, EPO, Medicare Advantage |
| M8C | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | Medicaid, PPO, High-Deductible Health Plan (HDHP) |
| M8D | Maine | Anthem Blue-Cross Blue-Shield of Maine | Traditional Indemnity, HMO, POS |
| M8E | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | EPO, Medicare Advantage, PPO |
| M8F | Texas | Blue-Cross Blue-Shield of Texas | High-Deductible Health Plan (HDHP), Traditional Indemnity, Medicaid |
| M8G | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | PPO, EPO, HMO |
| M8H | New York | Empire Blue-Cross Blue-Shield of New York | Medicare Advantage, High-Deductible Health Plan (HDHP), POS |
| M8I | – | Unallocated/Not Assigned | |
| M8J | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | PPO, HMO, Medicare Advantage |
| M8K | Texas | Blue-Cross Blue-Shield of Texas | High-Deductible Health Plan (HDHP), POS, Traditional Indemnity |
| M8L | California | Anthem Blue-Cross | EPO, Medicaid, PPO |
| M8M | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | HMO, Medicare Advantage, High-Deductible Health Plan (HDHP) |
| M8N | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | Traditional Indemnity, POS, EPO |
| M8O | – | Unallocated/Not Assigned | |
| M8P | Minnesota | Blue-Cross Blue-Shield of Minnesota | Medicare Advantage, High-Deductible Health Plan (HDHP), Traditional Indemnity |
| M8Q | Georgia | Anthem Blue-Cross Blue-Shield of Georgia | EPO, POS, PPO |
| M8R | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | High-Deductible Health Plan (HDHP), Traditional Indemnity, Medicaid |
| M8S | Illinois | Blue-Cross Blue-Shield of Illinois | HMO, Medicare Advantage, POS |
| M8T | Illinois | Blue-Cross Blue-Shield of Illinois | PPO, EPO, High-Deductible Health Plan (HDHP) |
| M8U | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | Traditional Indemnity, Medicaid, HMO |
| M8V | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut | Medicare Advantage, POS, EPO |
| M8W | Maine | Anthem Blue-Cross Blue-Shield of Maine | PPO, High-Deductible Health Plan (HDHP), Traditional Indemnity |
| M8X | New Hampshire | Anthem Blue-Cross Blue-Shield of New Hampshire | Medicaid, HMO, POS |
| M8Y | Texas | Blue-Cross Blue-Shield of Texas | EPO, Medicare Advantage, PPO |
| M8Z | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | High-Deductible Health Plan (HDHP), Traditional Indemnity, EPO |
| M9A | New York | Empire Blue-Cross Blue-Shield of New York | HMO, POS, Medicaid |
| M9B | Illinois | Blue-Cross Blue-Shield of Illinois | PPO, High-Deductible Health Plan (HDHP), Traditional Indemnity |
| M9C | New York | Empire Blue-Cross Blue-Shield of New York | Medicare Advantage, EPO, HMO |
| M9D | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | POS, PPO, Medicaid |
| M9E | Maine | Anthem Blue-Cross Blue-Shield of Maine | High-Deductible Health Plan (HDHP), Traditional Indemnity, EPO |
| M9F | Texas | Blue-Cross Blue-Shield of Texas | Medicare Advantage, HMO, POS |
| M9G | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | PPO, Medicaid, High-Deductible Health Plan (HDHP) |
| M9H | Illinois | Blue-Cross Blue-Shield of Illinois | Traditional Indemnity, EPO, HMO |
| M9I | – | Unallocated/Not Assigned | |
| M9J | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | High-Deductible Health Plan (HDHP), Medicaid, Traditional Indemnity |
| M9K | Texas | Blue-Cross Blue-Shield of Texas | EPO, HMO, POS |
| M9L | Texas | Blue-Cross Blue-Shield of Texas | PPO, Medicare Advantage, High-Deductible Health Plan (HDHP) |
| M9M | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | Medicaid, Traditional Indemnity, EPO |
| M9N | California | Anthem Blue-Cross | HMO, POS, PPO |
| M9O | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | Medicare Advantage, High-Deductible Health Plan (HDHP), Traditional Indemnity |
| M9P | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | EPO, Medicaid, HMO |
| M9Q | Georgia | Anthem Blue-Cross Blue-Shield of Georgia | POS, PPO, Medicare Advantage |
| M9R | California | Anthem Blue-Cross | High-Deductible Health Plan (HDHP), Traditional Indemnity, EPO |
| M9S | Illinois | Blue-Cross Blue-Shield of Illinois | HMO, Medicaid, POS |
| M9T | Texas | Blue-Cross Blue-Shield of Texas | PPO, Medicare Advantage, High-Deductible Health Plan (HDHP) |
| M9U | Georgia | Anthem Blue-Cross Blue-Shield of Georgia | Traditional Indemnity, EPO, HMO |
| M9V | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky | POS, PPO, Medicaid |
| M9W | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | High-Deductible Health Plan (HDHP), Traditional Indemnity, Medicare Advantage |
| M9X | – | Unallocated/Not Assigned | |
| M9Y | – | Unallocated/Not Assigned | |
| M9Z | – | Unallocated/Not Assigned |
Common BCBS Alpha Numeric Prefixes in the M2A to M9Z Range
In the section below i have listed and explain some of the most common BCBS prefixes in this range.
M9Z BCBS Prefix – Texas
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| M9Z | Texas | Blue Cross Blue Shield of Texas | PPO, HMO, HDHP |
The M9Z BCBS Prefix identifies coverage administered by Blue Cross Blue Shield of Texas. Patients with BCBS alpha numeric prefix M9Z may enroll in PPO, HMO, or High-Deductible Health Plans.
BCBS prefix M9Z appears frequently in employer-sponsored plans.
BCBS alpha numeric prefix M9Z helps billing teams determine the correct payer routing.
Because Texas BCBS operates multiple plan networks, verifying BCBS prefix M9Z ensures accurate claim submission and prevents delays.
BCBS Prefix M2S – Illinois
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| M2S | Illinois | BCBS of Illinois | HMO, PPO, Medicaid |
The M2S BCBS Prefix belongs to Blue Cross Blue Shield of Illinois. Patients carrying BCBS alpha numeric prefix M2S may have HMO, PPO, or Medicaid coverage.
BCBS prefix M2S is commonly used in Illinois-based insurance plans.
BCBS alpha numeric prefix M2S should always be verified before claim submission.
Therefore, confirming BCBS prefix M2S ensures claims are routed correctly. For comparison, you can also review BCBS Alpha Numeric Prefix L2A to L9Z.
BCBS Prefix M2R – Pennsylvania
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| M2R | Pennsylvania | Highmark BCBS of Pennsylvania | PPO, HDHP, EPO |
The M2R BCBS Prefix identifies coverage under Highmark Blue Cross Blue Shield of Pennsylvania. Patients with BCBS alpha numeric prefix M2R may enroll in PPO, High-Deductible Health Plans, or EPO coverage.
BCBS prefix M2R plays a key role in identifying the correct Highmark payer system.
BCBS alpha numeric prefix M2R helps billing teams ensure proper claim routing.
As a result, verifying BCBS prefix M2R reduces payer confusion and improves claim accuracy.
BCBS Prefix M2V – California
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| M2V | California | Anthem Blue Cross | HMO, EPO, POS |
The M2V BCBS Prefix represents Anthem Blue Cross in California. Patients carrying BCBS alpha numeric prefix M2V may have HMO, EPO, or POS plans.
BCBS prefix M2V is frequently seen in California commercial plans.
Anthem prefix M2V requires careful verification during eligibility checks.
Because Anthem operates across multiple networks, verifying BCBS prefix M2V ensures accurate claim submission. For broader comparison, you can explore BCBS Alpha Numeric Prefix K2A to K9Z.
M2E BCBS Prefix – New York
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| M2E | New York | Empire BCBS of New York | PPO, Medicare Advantage, EPO |
The M2E BCBS Prefix belongs to Empire Blue Cross Blue Shield of New York. Patients with BCBS alpha numeric prefix M2E may enroll in PPO, Medicare Advantage, or EPO plans.
BCBS prefix M2E appears in both commercial and Medicare-related policies.
BCBS alpha numeric prefix M2E plays an important role in payer identification.
Consequently, verifying BCBS prefix M2E helps billing teams improve claim acceptance rates.
M3E BCBS Prefix – Florida
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| M3E | Florida | Florida Blue | HMO, PPO, POS |
The M3E BCBS Prefix identifies coverage administered by Florida Blue. Patients carrying BCBS alpha numeric prefix M3E may enroll in HMO, PPO, or POS plans.
BCBS prefix M3E is commonly used in Florida-based policies.
BCBS alpha numeric prefix M3E ensures accurate payer identification.
Therefore, verifying BCBS prefix M3E reduces claim rejections and improves processing timelines.
M3Q BCBS Prefix – Michigan
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| M3Q | Michigan | BCBS of Michigan | PPO, Medicaid, POS |
The M3Q BCBS Prefix belongs to Blue Cross Blue Shield of Michigan. Patients with BCBS alpha numeric prefix M3Q may have PPO, Medicaid, or POS coverage.
BCBS prefix M3Q plays a key role in Michigan billing workflows.
BCBS alpha numeric prefix M3Q helps determine the correct payer quickly.
As a result, verifying BCBS prefix M3Q ensures smooth claim submission.
BCBS Prefix M3M – Georgia
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| M3M | Georgia | Anthem BCBS of Georgia | HMO, PPO, HDHP |
The M3M BCBS Prefix represents Anthem Blue Cross Blue Shield of Georgia. Patients carrying BCBS alpha numeric prefix M3M may enroll in HMO, PPO, or High-Deductible Health Plans.
BCBS prefix M3M appears in many employer-sponsored plans.
Anthem prefix M3M requires careful verification due to network variations.
Therefore, confirming BCBS prefix M3M ensures claims are processed correctly.
M4P BCBS Prefix – New Jersey
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| M4P | New Jersey | Horizon BCBS of New Jersey | HMO, POS, Medicaid |
The M4P BCBS Prefix belongs to Horizon Blue Cross Blue Shield of New Jersey. Patients with BCBS alpha numeric prefix M4P may have HMO, POS, or Medicaid plans.
BCBS prefix M4P helps identify the correct New Jersey payer system.
BCBS alpha numeric prefix M4P ensures accurate claim routing.
Consequently, verifying BCBS prefix M4P improves billing efficiency.
BCBS Prefix M4M – Oklahoma
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| M4M | Oklahoma | BCBS of Oklahoma | PPO, Medicaid, HDHP |
The M4M BCBS Prefix identifies coverage administered by Blue Cross Blue Shield of Oklahoma. Patients carrying BCBS alpha numeric prefix M4M may enroll in PPO, Medicaid, or High-Deductible Health Plans.
BCBS prefix M4M is frequently used in regional plans.
BCBS alpha numeric prefix M4M supports accurate payer identification.
As a result, verifying BCBS prefix M4M ensures claims are processed without delays.
Why BCBS Prefix Verification Is Essential
Although the prefix contains only three characters, it directly impacts claim processing. Therefore, billing teams must verify it during every eligibility check.
Accurate prefix validation helps providers:
- Route claims correctly
- Reduce denials
- Improve reimbursement timelines
- Minimize administrative workload
Common Billing Errors with M-Series Prefixes
Even experienced billing teams can make mistakes. However, most issues occur due to:
- Assuming payer based on patient location
- Skipping prefix verification
- Confusing Anthem-managed plans
Real-Life Example
A billing team received a patient with BCBS prefix M2V and initially assumed the payer based on location. However, after verifying the prefix, they identified the correct Anthem network.
As a result, they corrected the payer before submission. Consequently, the claim processed successfully without rejection.
FAQs – BCBS Alpha Numeric Prefix M2A to M9Z
Q. What is a BCBS alpha numeric prefix?
It is a three-character code that identifies the BCBS organization responsible for processing claims.
Q. Why is prefix verification important?
It ensures claims are routed correctly and reduces denials.
Q. Can prefixes overlap across states?
Yes. Therefore, always verify prefixes before submitting claims.
Conclusion
The BCBS Alpha Numeric Prefix M2A to M9Z helps healthcare providers accurately identify the correct BCBS payer. By verifying prefixes such as M2S, M3Q, or M4P, billing teams can reduce errors, improve claim acceptance rates, and streamline revenue cycle operations.
To further enhance your billing performance, you can explore professional services like for eligibility verification, claim submission, and accounts receivable management.
