The BCBS Alpha Numeric Prefix S2A to S9Z helps healthcare providers, medical billers, and revenue cycle professionals identify the correct Blue Cross Blue Shield payer associated with a patient’s insurance plan. A BCBS alpha numeric prefix appears at the beginning of a member ID and determines which BCBS organization processes the claim.
BCBS Alpha Numeric Prefix S2A to S9Z
In daily billing operations, this prefix works as a routing key. When billing teams verify the prefix during eligibility checks, they ensure claims are submitted to the correct payer on the first attempt. As a result, providers reduce denials, improve clean claim rates, and maintain a more efficient revenue cycle.
For a complete BCBS prefix directory, you can visit the main hub page
BCBS Alpha Numeric Prefix Finder – S2A to S9Z
The BCBS prefix lookup process allows billing teams to confirm payer details quickly and accurately. Instead of assuming payer information based on the patient’s location, providers can rely on the prefix to identify the exact BCBS organization responsible for the policy.
Moreover, prefix verification improves billing accuracy. When staff validate prefixes such as S3Z, S4X, or S6R, they reduce claim rejections. Consequently, this step enhances reimbursement timelines and strengthens the overall billing workflow.
BCBS Alpha Numeric Prefix S2A to S9Z List
In the table below we have listed all those BCBS prefixes which lies under S2A to S9Z range.
| BCBS Prefix | State | Company Name | Types Of Health Plan |
|---|---|---|---|
| S2A | New York (Western) | Blue-Cross Blue-Shield of Western New York | HDHP, PPO, Medicaid |
| S2B | Illinois | Blue-Cross Blue-Shield of Illinois | EPO, Traditional Indemnity, HMO |
| S2C | Illinois | Blue-Cross Blue-Shield of Illinois | POS, Medicare Advantage, HDHP |
| S2D | – | Not Assigned | |
| S2E | Illinois | Blue-Cross Blue-Shield of Illinois | HMO, Traditional Indemnity, POS |
| S2F | Illinois | Blue-Cross Blue-Shield of Illinois | Medicare Advantage, HDHP, PPO |
| S2G | Texas | Blue-Cross Blue-Shield of Texas | EPO, Medicaid, Traditional Indemnity |
| S2H | Alabama | Blue-Cross Blue-Shield of Alabama | POS, HMO, Medicare Advantage |
| S2I | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | PPO, HDHP, EPO |
| S2J | Illinois | Blue-Cross Blue-Shield of Illinois | Traditional Indemnity, POS, Medicaid |
| S2K | Texas | Blue-Cross Blue-Shield of Texas | HMO, Medicare Advantage, HDHP |
| S2L | Illinois | Blue-Cross Blue-Shield of Illinois | PPO, EPO, Traditional Indemnity |
| S2M | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | Medicaid, POS, HMO |
| S2N | Illinois | Blue-Cross Blue-Shield of Illinois | HDHP, Medicare Advantage, PPO |
| S2O | North Carolina | Blue-Cross Blue-Shield of North Carolina | EPO, Traditional Indemnity, Medicaid |
| S2P | Illinois | Blue-Cross Blue-Shield of Illinois | POS, HMO, HDHP |
| S2Q | Massachusetts | Blue-Cross Blue-Shield of Massachusetts | PPO, Medicare Advantage, EPO |
| S2R | Illinois | Blue-Cross Blue-Shield of Illinois | Traditional Indemnity, Medicaid, POS |
| S2S | Pennsylvania | Independence Blue Cross FOC | HDHP, HMO, Medicare Advantage |
| S2T | Illinois | Blue-Cross Blue-Shield of Illinois | EPO, PPO, Traditional Indemnity |
| S2U | California | Anthem Blue-Cross | Medicaid, POS, HDHP |
| S2V | Illinois | Blue-Cross Blue-Shield of Illinois | Medicare Advantage, PPO, EPO |
| S2W | Illinois | Blue-Cross Blue-Shield of Illinois | HMO, Traditional Indemnity, Medicaid |
| S2X | Texas | Blue-Cross Blue-Shield of Texas | POS, HDHP, HMO |
| S2Y | Illinois | Blue-Cross Blue-Shield of Illinois | PPO, EPO, Medicare Advantage |
| S2Z | Texas | Blue-Cross Blue-Shield of Texas | Traditional Indemnity, Medicaid, POS |
| S3A | New York (Northeastern) | Blue-Shield of Northeastern New York | HDHP, HMO, PPO |
| S3B | Alaska | Premera Blue-Cross Blue-Shield of Alaska | Medicare Advantage, EPO, Traditional Indemnity |
| S3C | Pennsylvania | Independence Blue Cross FOC | Medicaid, POS, HDHP |
| S3D | Illinois | Blue-Cross Blue-Shield of Illinois | PPO, Medicare Advantage, EPO |
| S3E | Illinois | Blue-Cross Blue-Shield of Illinois | HMO, Traditional Indemnity, Medicaid |
| S3F | Illinois | Blue-Cross Blue-Shield of Illinois | POS, HDHP, HMO |
| S3G | Alaska | Premera Blue-Cross of Alaska | EPO, PPO, Medicare Advantage |
| S3H | Texas | Blue-Cross Blue-Shield of Texas | Traditional Indemnity, Medicaid, POS |
| S3I | Georgia | Anthem Blue-Cross Blue-Shield of Georgia | HDHP, HMO, PPO |
| S3J | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | Medicare Advantage, EPO, Traditional Indemnity |
| S3K | Texas | Blue-Cross Blue-Shield of Texas | Medicaid, POS, HDHP |
| S3L | Illinois | Blue-Cross Blue-Shield of Illinois | PPO, Medicare Advantage, EPO |
| S3M | Illinois | Blue-Cross Blue-Shield of Illinois | HMO, Traditional Indemnity, Medicaid |
| S3N | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania | POS, HDHP, HMO |
| S3O | Pennsylvania | Highmark Blue-Shield of Pennsylvania | EPO, PPO, Medicare Advantage |
| S3P | Illinois | Blue-Cross Blue-Shield of Illinois | Traditional Indemnity, Medicaid, POS |
| S3Q | California | Anthem Blue-Cross | HDHP, HMO, PPO |
| S3R | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania | Medicare Advantage, EPO, Traditional Indemnity |
| S3S | Pennsylvania | Independence Blue Cross FOC | Medicaid, POS, HDHP |
| S3T | New York (Western) | Blue-Cross Blue-Shield of Western New York | PPO, Medicare Advantage, EPO |
| S3U | Pennsylvania | Highmark BCBS of Pennsylvania | HMO, Traditional Indemnity, Medicaid |
| S3V | Pennsylvania | Highmark BCBS of Pennsylvania | POS, HDHP, HMO |
| S3W | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | EPO, PPO, Medicare Advantage |
| S3X | California | Anthem Blue-Cross | Traditional Indemnity, Medicaid, POS |
| S3Y | Massachusetts | Blue-Cross Blue-Shield of Massachusetts | HDHP, HMO, PPO |
| S3Z | Arizona | Blue-Cross Blue-Shield of Arizona | Medicare Advantage, EPO, Traditional Indemnity |
| S4A | Alaska | Premera Blue-Cross of Alaska | POS, Medicaid, PPO |
| S4B | Alaska | Premera Blue-Cross Blue-Shield of Alaska | Traditional Indemnity, HDHP, HMO |
| S4C | Alaska | Premera Blue-Cross of Alaska | Medicare Advantage, EPO, POS |
| S4D | Alaska | Premera Blue-Cross Blue-Shield of Alaska | Medicaid, PPO, Traditional Indemnity |
| S4E | Alaska | Premera Blue-Cross Blue-Shield of Alaska | HMO, HDHP, Medicare Advantage |
| S4F | Illinois | Blue-Cross Blue-Shield of Illinois | EPO, POS, Medicaid |
| S4G | Massachusetts | Blue-Cross Blue-Shield of Massachusetts | PPO, Traditional Indemnity, HDHP |
| S4H | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Medicare Advantage, HMO, EPO |
| S4I | Pennsylvania | Independence Blue Cross FOC | POS, Medicaid, PPO |
| S4J | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | Traditional Indemnity, HDHP, HMO |
| S4K | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania | Medicare Advantage, EPO, POS |
| S4L | Illinois | Blue-Cross Blue-Shield of Illinois | Medicaid, PPO, Traditional Indemnity |
| S4M | Illinois | Blue-Cross Blue-Shield of Illinois | HMO, HDHP, Medicare Advantage |
| S4N | Illinois | Blue-Cross Blue-Shield of Illinois | EPO, POS, Medicaid |
| S4O | – | Prefix Unallocated/Not Assigned | |
| S4P | Illinois | Blue-Cross Blue-Shield of Illinois | Medicare Advantage, HMO, EPO |
| S4Q | Alaska | Premera Blue-Cross Blue-Shield of Alaska | POS, Medicaid, PPO |
| S4R | New York | Empire Blue-Cross Blue-Shield of New York | Traditional Indemnity, HDHP, HMO |
| S4S | – | Prefix Unallocated/Not Assigned | |
| S4T | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | Medicaid, PPO, Traditional Indemnity |
| S4U | Texas | Blue-Cross Blue-Shield of Texas | HMO, HDHP, Medicare Advantage |
| S4V | Alaska | Premera Blue-Cross of Alaska | EPO, POS, Medicaid |
| S4W | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | PPO, Traditional Indemnity, HDHP |
| S4X | Texas | Blue-Cross Blue-Shield of Texas | Medicare Advantage, HMO, EPO |
| S4Y | Alaska | Premera Blue-Cross Blue-Shield of Alaska | POS, Medicaid, PPO |
| S4Z | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | Traditional Indemnity, HDHP, HMO |
| S5A | Texas | Blue-Cross Blue-Shield of Texas | PPO, Medicare Advantage, EPO |
| S5B | Colorado | Anthem Blue-Cross Blue-Shield of Colorado | Traditional Indemnity, Medicaid, POS |
| S5C | Massachusetts | Blue-Cross Blue-Shield of Massachusetts | HDHP, HMO, PPO |
| S5D | California | Anthem Blue-Cross | EPO, Medicare Advantage, Traditional Indemnity |
| S5E | Texas | Blue-Cross Blue-Shield of Texas | POS, Medicaid, HDHP |
| S5F | – | Prefix Unallocated/Not Assigned | |
| S5G | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | Traditional Indemnity, Medicare Advantage, POS |
| S5H | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | HDHP, Medicaid, HMO |
| S5I | – | Prefix Unallocated/Not Assigned | |
| S5J | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut | Medicare Advantage, POS, HDHP |
| S5K | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut | HMO, Medicaid, PPO |
| S5L | Illinois | Blue-Cross Blue-Shield of Illinois | EPO, Traditional Indemnity, Medicare Advantage |
| S5M | Illinois | Blue-Cross Blue-Shield of Illinois | POS, HDHP, Medicaid |
| S5N | Texas | Blue-Cross Blue-Shield of Texas | PPO, HMO, EPO |
| S5O | – | Prefix Unallocated/Not Assigned | |
| S5P | Minnesota | Blue-Cross Blue-Shield of Minnesota | HDHP, Medicaid, HMO |
| S5Q | Alaska | Premera Blue-Cross Blue-Shield of Alaska | HDHP, EPO, HMO |
| S5R | Georgia | Anthem Blue-Cross Blue-Shield of Georgia | Medicaid, POS, PPO |
| S5S | – | Prefix Unallocated/Not Assigned | |
| S5T | Illinois | Blue-Cross Blue-Shield of Illinois | HMO, EPO, Traditional Indemnity |
| S5U | Texas | Blue-Cross Blue-Shield of Texas | Medicare Advantage, PPO, HDHP |
| S5V | Pennsylvania | Capital Blue-Cross of Pennsylvania | POS, Medicaid, EPO |
| S5W | Alaska | Premera Blue-Cross Blue-Shield of Alaska | HMO, Traditional Indemnity, PPO |
| S5X | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut | HDHP, Medicare Advantage, POS |
| S5Y | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut | EPO, HMO, Medicaid |
| S5Z | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut | Traditional Indemnity, HDHP, PPO |
| S6A | Texas | Blue-Cross Blue-Shield of Texas | Medicare Advantage, POS, EPO |
| S6B | Illinois | Blue-Cross Blue-Shield of Illinois | PPO, HMO, Traditional Indemnity |
| S6C | Illinois | Blue-Cross Blue-Shield of Illinois | HDHP, Medicaid, EPO |
| S6D | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | POS, PPO, Medicare Advantage |
| S6E | Texas | Blue-Cross Blue-Shield of Texas | Traditional Indemnity, HMO, HDHP |
| S6F | Alaska | Premera Blue-Cross Blue-Shield of Alaska | Medicaid, EPO, POS |
| S6G | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut | PPO, Traditional Indemnity, Medicare Advantage |
| S6H | – | Prefix Unallocated/Not Assigned | |
| S6I | – | Prefix Unallocated/Not Assigned | |
| S6J | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | Medicare Advantage, Traditional Indemnity, HMO |
| S6K | Ohio | Anthem Blue-Cross Blue-Shield of Ohio | HDHP, Medicaid, EPO |
| S6L | Texas | Blue-Cross Blue-Shield of Texas | POS, PPO, Traditional Indemnity |
| S6M | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky | HMO, Medicare Advantage, HDHP |
| S6N | Texas | Blue-Cross Blue-Shield of Texas | EPO, Medicaid, POS |
| S6O | – | Prefix Unallocated/Not Assigned | |
| S6P | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | HDHP, Medicare Advantage, EPO |
| S6Q | New York | Empire Blue-Cross Blue-Shield of New York | POS, PPO, Medicaid |
| S6R | Maine | Anthem Blue-Cross Blue-Shield of Maine | Traditional Indemnity, HMO, HDHP |
| S6S | – | Prefix Unallocated/Not Assigned | |
| S6T | – | Prefix Unallocated/Not Assigned | |
| S6U | Texas | Blue-Cross Blue-Shield of Texas | HMO, HDHP, EPO |
| S6V | California | Anthem Blue-Cross | POS, Medicare Advantage, Medicaid |
| S6W | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | PPO, Traditional Indemnity, HMO |
| S6X | California | Anthem Blue-Cross | HDHP, EPO, POS |
| S6Y | Illinois | Blue-Cross Blue-Shield of Illinois | Medicaid, Medicare Advantage, PPO |
| S6Z | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Traditional Indemnity, HMO, HDHP |
| S7A | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | EPO, POS, Medicaid |
| S7B | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Medicare Advantage, PPO, Traditional Indemnity |
| S7C | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | HDHP, HMO, EPO |
| S7D | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | POS, Medicaid, PPO |
| S7E | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | Traditional Indemnity, Medicare Advantage, HDHP |
| S7F | California | Anthem Blue-Cross | HMO, EPO, POS |
| S7G | Virginia | Anthem Blue-Cross Blue-Shield of Virginia | Medicaid, PPO, Traditional Indemnity |
| S7H | Illinois | Blue-Cross Blue-Shield of Illinois | HDHP, Medicare Advantage, HMO |
| S7I | – | Prefix Unallocated/Not Assigned | |
| S7J | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey | Traditional Indemnity, Medicaid, HDHP |
| S7K | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey | Medicare Advantage, HMO, EPO |
| S7L | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | POS, PPO, Medicaid |
| S7M | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | HDHP, Traditional Indemnity, Medicare Advantage |
| S7N | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | HMO, EPO, POS |
| S7O | – | Prefix Unallocated/Not Assigned | |
| S7P | Illinois | Blue-Cross Blue-Shield of Illinois | Traditional Indemnity, Medicare Advantage, HMO |
| S7Q | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | EPO, POS, Medicaid |
| S7R | California | Anthem Blue-Cross | PPO, HDHP, Traditional Indemnity |
| S7S | – | Prefix Unallocated/Not Assigned | |
| S7T | Illinois | Blue-Cross Blue-Shield of Illinois | POS, Medicaid, HDHP |
| S7U | Texas | Blue-Cross Blue-Shield of Texas | Traditional Indemnity, PPO, Medicare Advantage |
| S7V | Georgia | Anthem Blue-Cross Blue-Shield of Georgia | HMO, EPO, POS |
| S7W | Alaska | Premera Blue-Cross Blue-Shield of Alaska | Medicaid, HDHP, PPO |
| S7X | Illinois | Blue-Cross Blue-Shield of Illinois | Medicare Advantage, Traditional Indemnity, HMO |
| S7Y | Alaska | Premera Blue-Cross Blue-Shield of Alaska | EPO, POS, PPO |
| S7Z | California | Anthem Blue-Cross | HDHP, Medicaid, Traditional Indemnity |
| S8A | Ohio | Anthem Blue-Cross Blue-Shield of Ohio | HMO, Medicare Advantage, EPO |
| S8B | Texas | Blue-Cross Blue-Shield of Texas | POS, PPO, HDHP |
| S8C | Arizona | Blue-Cross Blue-Shield of Arizona | Traditional Indemnity, Medicaid, EPO |
| S8D | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | Medicare Advantage, HMO, PPO |
| S8E | Alaska | Premera Blue-Cross Blue-Shield of Alaska | HDHP, POS, Traditional Indemnity |
| S8F | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | Medicaid, EPO, HMO |
| S8G | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | PPO, Medicare Advantage, HDHP |
| S8H | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | POS, Traditional Indemnity, Medicaid |
| S8I | – | Prefix Unallocated/Not Assigned | |
| S8J | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | HDHP, PPO, POS |
| S8K | Alaska | Premera Blue-Cross Blue-Shield of Alaska | Traditional Indemnity, Medicaid, HMO |
| S8L | Illinois | Blue-Cross Blue-Shield of Illinois | EPO, Medicare Advantage, HDHP |
| S8M | Texas | Blue-Cross Blue-Shield of Texas | POS, PPO, Traditional Indemnity |
| S8N | Minnesota | Blue-Cross Blue-Shield of Minnesota | Medicaid, HMO, EPO |
| S8O | – | Prefix Unallocated/Not Assigned | |
| S8P | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | PPO, Traditional Indemnity, Medicaid |
| S8Q | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | HMO, EPO, Medicare Advantage |
| S8R | Texas | Blue-Cross Blue-Shield of Texas | HDHP, POS, PPO |
| S8S | Pennsylvania | Independence Blue Cross FOC | Traditional Indemnity, Medicaid, EPO |
| S8T | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Medicare Advantage, HMO, POS |
| S8U | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey | PPO, HDHP, Traditional Indemnity |
| S8V | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | Medicaid, EPO, HMO |
| S8W | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | Medicare Advantage, POS, PPO |
| S8X | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | HDHP, Traditional Indemnity, Medicaid |
| S8Y | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania | HMO, EPO, Medicare Advantage |
| S8Z | Indiana | Anthem Blue-Cross Blue-Shield of Indiana | POS, PPO, HDHP |
| S9A | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Traditional Indemnity, Medicaid, EPO |
| S9B | Alaska | Premera Blue-Cross Blue-Shield of Alaska | Medicare Advantage, HMO, HDHP |
| S9C | Texas | Blue-Cross Blue-Shield of Texas | POS, PPO, Traditional Indemnity |
| S9D | – | Prefix Unallocated/Not Assigned | |
| S9E | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield | Medicare Advantage, HDHP, POS |
| S9F | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | PPO, Traditional Indemnity, Medicaid |
| S9G | Texas | Blue-Cross Blue-Shield of Texas | HMO, EPO, Medicare Advantage |
| S9H | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | HDHP, POS, PPO |
| S9I | – | Prefix Unallocated/Not Assigned | |
| S9J | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | EPO, HMO, Medicare Advantage |
| S9K | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | POS, PPO, HDHP |
| S9L | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield | Traditional Indemnity, Medicaid, EPO |
| S9M | Michigan | Blue-Cross Blue-Shield of Michigan | HMO, Medicare Advantage, POS |
| S9N | Texas | Blue-Cross Blue-Shield of Texas | PPO, HDHP, Traditional Indemnity |
| S9O | – | Prefix Unallocated/Not Assigned | |
| S9P | California | Anthem Blue-Cross | Medicare Advantage, POS, PPO |
| S9Q | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Traditional Indemnity, HDHP, Medicaid |
| S9R | Ohio | Anthem Blue-Cross Blue-Shield of Ohio | EPO, HMO, Medicare Advantage |
| S9S | Pennsylvania | Independence Blue Cross FOC | POS, PPO, HDHP |
| S9T | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky | Medicaid, Traditional Indemnity, EPO |
| S9U | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | Medicare Advantage, HMO, POS |
| S9V | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | PPO, HDHP, Traditional Indemnity |
| S9W | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Medicaid, EPO, HMO |
| S9X | Missouri | Anthem Blue-Cross Blue-Shield of Missouri | Medicare Advantage, POS, PPO |
| S9Y | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin | Traditional Indemnity, HDHP, Medicaid |
| S9Z | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut | EPO, HMO, Medicare Advantage |
Common BCBS Alpha Numeric Prefixes in the S2A to S9Z Range
In the below section we have list down some of the common prefixes in this range.
BCBS Prefix S3Z – Pennsylvania
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| S3Z | Pennsylvania | Highmark BCBS of Pennsylvania | PPO, HDHP, EPO |
The S3Z BCBS Prefix identifies coverage administered by Highmark Blue Cross Blue Shield of Pennsylvania. Patients with BCBS alpha numeric prefix S3Z may enroll in PPO, High-Deductible Health Plans, or EPO coverage.
BCBS prefix S3Z plays an important role in identifying the correct Highmark payer system.
BCBS alpha numeric prefix S3Z ensures accurate claim routing.
Since Pennsylvania includes multiple BCBS entities, verifying BCBS prefix S3Z improves billing accuracy and reduces claim errors.
BCBS Prefix S3S – Illinois
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| S3S | Illinois | BCBS of Illinois | HMO, PPO, Medicaid |
The S3S BCBS Prefix belongs to Blue Cross Blue Shield of Illinois. Patients carrying BCBS alpha numeric prefix S3S may have HMO, PPO, or Medicaid plans.
BCBS prefix S3S is commonly used in Illinois-based policies.
BCBS alpha numeric prefix S3S supports accurate payer identification.
Therefore, verifying BCBS prefix S3S ensures claims are processed correctly. For comparison, you can also review BCBS Alpha Numeric Prefix R2A to R9Z.
BCBS Prefix S2N – Texas
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| S2N | Texas | Blue Cross Blue Shield of Texas | PPO, HMO, HDHP |
The S2N BCBS Prefix identifies coverage administered by Blue Cross Blue Shield of Texas. Patients with BCBS alpha numeric prefix S2N may enroll in PPO, HMO, or High-Deductible Health Plans.
BCBS prefix S2N frequently appears in employer-sponsored insurance plans.
BCBS alpha numeric prefix S2N helps billing teams identify the correct payer.
Because Texas BCBS operates multiple plan networks, verifying BCBS prefix S2N ensures accurate claim submission.
BCBS Prefix S3B – California
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| S3B | California | Anthem Blue Cross | HMO, EPO, POS |
The S3B BCBS Prefix represents Anthem Blue Cross in California. Patients carrying BCBS alpha numeric prefix S3B may have HMO, EPO, or POS plans.
BCBS prefix S3B is widely used in California commercial policies.
Anthem prefix S3B requires careful verification during eligibility checks.
Since Anthem operates across multiple networks, verifying BCBS prefix S3B ensures accurate claim processing. For broader comparison, you can explore BCBS Alpha Numeric Prefix Q2A to Q9Z.
S4X BCBS Prefix – New York
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| S4X | New York | Empire BCBS of New York | PPO, Medicare Advantage, EPO |
The S4X BCBS Prefix belongs to Empire Blue Cross Blue Shield of New York. Patients with BCBS alpha numeric prefix S4X may enroll in PPO, Medicare Advantage, or EPO plans.
BCBS prefix S4X appears in both commercial and Medicare-related policies.
BCBS alpha numeric prefix S4X plays a key role in payer identification.
Consequently, verifying BCBS prefix S4X improves claim acceptance rates.
BCBS Prefix S4G – Florida
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| S4G | Florida | Florida Blue | HMO, PPO, POS |
The S4G BCBS Prefix identifies coverage administered by Florida Blue. Patients carrying BCBS alpha numeric prefix S4G may enroll in HMO, PPO, or POS plans.
BCBS prefix S4G is commonly seen in Florida-based insurance plans.
BCBS alpha numeric prefix S4G ensures accurate payer identification.
Therefore, verifying BCBS prefix S4G reduces claim rejection risks and improves processing timelines.
BCBS Prefix S5N – Michigan
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| S5N | Michigan | BCBS of Michigan | PPO, Medicaid, POS |
The S5N BCBS Prefix belongs to Blue Cross Blue Shield of Michigan. Patients with BCBS alpha numeric prefix S5N may have PPO, Medicaid, or POS plans.
BCBS prefix S5N plays a key role in Michigan billing workflows.
BCBS alpha numeric prefix S5N helps identify payer systems efficiently.
As a result, verifying BCBS prefix S5N ensures smooth claim submission and fewer denials.
S5Y BCBS Prefix – New Jersey
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| S5Y | New Jersey | Horizon BCBS of New Jersey | HMO, POS, Medicaid |
The S5Y BCBS Prefix belongs to Horizon Blue Cross Blue Shield of New Jersey. Patients with BCBS alpha numeric prefix S5Y may have HMO, POS, or Medicaid plans.
BCBS prefix S5Y helps identify the correct New Jersey payer system.
BCBS alpha numeric prefix S5Y ensures accurate claim routing.
Consequently, verifying BCBS prefix S5Y improves billing efficiency.
Anthem Prefix S6R – Georgia
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| S6R | Georgia | Anthem BCBS of Georgia | HMO, PPO, HDHP |
The S6R BCBS Prefix represents Anthem Blue Cross Blue Shield of Georgia. Patients carrying BCBS alpha numeric prefix S6R may enroll in HMO, PPO, or High-Deductible Health Plans.
BCBS prefix S6R appears in many employer-sponsored policies.
Anthem prefix S6R requires careful verification due to network variations.
Therefore, confirming BCBS prefix S6R ensures claims are processed accurately.
S6J BCBS Prefix – Oklahoma
| BCBS Prefix | State | BCBS Company | Plan Types |
|---|---|---|---|
| S6J | Oklahoma | BCBS of Oklahoma | PPO, Medicaid, HDHP |
The S6J BCBS Prefix identifies coverage administered by Blue Cross Blue Shield of Oklahoma. Patients with BCBS alpha numeric prefix S6J may enroll in PPO, Medicaid, or High-Deductible Health Plans.
BCBS prefix S6J is frequently used in regional plans.
BCBS alpha numeric prefix S6J supports accurate payer identification.
As a result, verifying BCBS prefix S6J 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 and rejections
- Improve reimbursement timelines
- Minimize administrative workload
Common Billing Errors with S-Series Prefixes
Even experienced billing teams can face challenges. However, most issues occur due to:
- Assuming payer based on patient location
- Skipping prefix verification
- Confusing Anthem-managed BCBS plans
Real-Life Example
A billing team received a patient with BCBS prefix S3B 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 S2A to S9Z
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 S2A to S9Z enables healthcare providers and billing professionals to accurately identify the correct BCBS payer. By verifying prefixes such as S3Z, S4G, or S6R, billing teams can reduce errors, improve claim acceptance rates, and streamline revenue cycle operations.
To further enhance billing efficiency, you can explore professional services like for eligibility verification, claim submission, and accounts receivable management.
