BCBS Alpha numeric Prefix S2A to S9Z list is updated from authorized and trusted resources and based on the latest information.
| BCBS Alpha Numeric Prefix | BCBS Plan Name |
| S2A | BCBS of Western New York |
| S2B | BCBS of Illinois |
| S2C | BCBS of Illinois |
| S2D | BCBS of Texas |
| S2E | BCBS of Illinois |
| S2F | BCBS of Illinois |
| S2G | BCBS of Texas |
| S2H | BCBS of Alabama |
| S2I | Anthem BCBS of Wisconsin |
| S2J | BCBS of Illinois |
| S2K | BCBS of Texas |
| S2L | BCBS of Illinois |
| S2M | Regence BCBS |
| S2N | Not Assigned Prefix |
| S2O | Not Assigned Prefix |
| S2P | BCBS of Illinois |
| S2Q | Blue Cross of Massachusetts |
| S2R | BCBS of Illinois |
| S2S | Independence Blue Cross |
| S2T | BCBS of Illinois |
| S2U | Not Assigned Prefix |
| S2V | BCBS of Illinois |
| S2W | Not Assigned Prefix |
| S2X | BCBS of Texas |
| S2Y | BCBS of Illinois |
| S2Z | BCBS of Texas |
| S3A | Blue Shield of Northeastern New York |
| S3B | Premera BCBS of Alaska |
| S3C | Independence Blue Cross |
| S3D | BCBS of Illinois |
| S3E | BCBS of Illinois |
| S3F | BCBS of Illinois |
| S3G | Premera Blue Cross |
| S3H | BCBS of Texas |
| S3I | Not Assigned Prefix |
| S3J | Carefirst BCBS |
| S3K | BCBS of Texas |
| S3L | BCBS of Illinois |
| S3M | BCBS of Illinois |
| S3N | Highmark BCBS |
| S3O | Highmark Blue Shield |
| S3P | BCBS of Illinois |
| S3Q | Anthem Blue Cross of California |
| S3R | Highmark BCBS |
| S3S | Independence Blue Cross |
| S3T | BCBS of Western New York |
| S3U | Highmark BCBS of Delaware |
| S3V | Highmark Blue Shield |
| S3W | Not Assigned Prefix |
| S3X | Not Assigned Prefix |
| S3Y | Blue Cross of Massachusetts |
| S3Z | BCBS of Arizona |
| S4A | Premera Blue Cross |
| S4B | Premera BCBS of Alaska |
| S4C | Premera Blue Cross |
| S4D | Not Assigned Prefix |
| S4E | Premera BCBS of Alaska |
| S4F | BCBS of Illinois |
| S4G | Blue Cross of Massachusetts |
| S4H | Anthem BCBS of Missouri |
| S4I | Not Assigned Prefix |
| S4J | Carefirst BCBS |
| S4K | Independence Blue Cross |
| S4L | BCBS of Illinois |
| S4M | BCBS of Illinois |
| S4N | BCBS of Illinois |
| S4O | Not Assigned Prefix |
| S4P | BCBS of Illinois |
| S4Q | Not Assigned Prefix |
| S4R | Empire BCBS |
| S4S | Independence Blue Cross |
| S4T | Carefirst BCBS |
| S4U | BCBS of Texas |
| S4V | Premera Blue Cross |
| S4W | Regence BCBS |
| S4X | Not Assigned Prefix |
| S4Y | Not Assigned Prefix |
| S4Z | Not Assigned Prefix |
| S5A | BCBS of Texas |
| S5B | Not Assigned Prefix |
| S5C | Blue Cross of Massachusetts |
| S5D | Not Assigned Prefix |
| S5E | BCBS of Texas |
| S5F | Not Assigned Prefix |
| S5G | Anthem BCBS of Indiana |
| S5H | Anthem BCBS of Missouri |
| S5I | Not Assigned Prefix |
| S5J | Not Assigned Prefix |
| S5K | Not Assigned Prefix |
| S5L | BCBS of Illinois |
| S5M | BCBS of Illinois |
| S5N | Not Assigned Prefix |
| S5O | Not Assigned Prefix |
| S5P | BCBS of Minnesota |
| S5Q | Not Assigned Prefix |
| S5R | Not Assigned Prefix |
| S5S | Independence Blue Cross |
| S5T | BCBS of Illinois |
| S5U | BCBS of Texas |
| S5V | Capital Blue Cross |
| S5W | Not Assigned Prefix |
| S5X | Not Assigned Prefix |
| S5Y | Not Assigned Prefix |
| S5Z | Not Assigned Prefix |
| S6A | BCBS of Texas |
| S6B | BCBS of Illinois |
| S6C | Anthem BCBS of Virginia |
| S6D | Not Assigned Prefix |
| S6E | BCBS of Texas |
| S6F | Not Assigned Prefix |
| S6G | Not Assigned Prefix |
| S6H | BCBS of Minnesota |
| S6I | Not Assigned Prefix |
| S6J | Not Assigned Prefix |
| S6K | Anthem BCBS of Ohio |
| S6L | BCBS of Texas |
| S6M | Anthem BCBS of Kentucky |
| S6N | Not Assigned Prefix |
| S6O | Not Assigned Prefix |
| S6P | Regence BCBS |
| S6Q | Empire BCBS |
| S6R | Anthem BCBS of Maine |
| S6S | Independence Blue Cross |
| S6T | Carefirst BCBS |
| S6U | BCBS of Texas |
| S6V | Not Assigned Prefix |
| S6W | Regence BCBS |
| S6X | Not Assigned Prefix |
| S6Y | BCBS of Illinois |
| S6Z | Not Assigned Prefix |
| S7A | Anthem BCBS of Missouri |
| S7B | Anthem BCBS of Missouri |
| S7C | Anthem BCBS of Missouri |
| S7D | Not Assigned Prefix |
| S7E | Regence BCBS |
| S7F | Not Assigned Prefix |
| S7G | Anthem BCBS of Virginia |
| S7H | Not Assigned Prefix |
| S7I | Not Assigned Prefix |
| S7J | Not Assigned Prefix |
| S7K | Not Assigned Prefix |
| S7L | Regence BCBS |
| S7M | Carefirst BCBS |
| S7N | Not Assigned Prefix |
| S7O | Not Assigned Prefix |
| S7P | Not Assigned Prefix |
| S7Q | Not Assigned Prefix |
| S7R | Not Assigned Prefix |
| S7S | Independence Blue Cross |
| S7T | BCBS of Illinois |
| S7U | BCBS of Texas |
| S7V | Not Assigned Prefix |
| S7W | Not Assigned Prefix |
| S7X | Not Assigned Prefix |
| S7Y | Not Assigned Prefix |
| S7Z | Not Assigned Prefix |
| S8A | Anthem BCBS of Ohio |
| S8B | Not Assigned Prefix |
| S8C | Empire BCBS |
| S8D | Anthem BCBS of Indiana |
| S8E | Premera BCBS of Alaska |
| S8F | Anthem BCBS of Indiana |
| S8G | Anthem BCBS of Indiana |
| S8H | Anthem BCBS of Indiana |
| S8I | Not Assigned Prefix |
| S8J | Anthem BCBS of Indiana |
| S8K | Premera BCBS of Alaska |
| S8L | BCBS of Illinois |
| S8M | Not Assigned Prefix |
| S8N | BCBS of Minnesota |
| S8O | Not Assigned Prefix |
| S8P | Anthem BCBS of Indiana |
| S8Q | Not Assigned Prefix |
| S8R | Not Assigned Prefix |
| S8S | Independence Blue Cross |
| S8T | Anthem BCBS of Missouri |
| S8U | Not Assigned Prefix |
| S8V | Not Assigned Prefix |
| S8W | Not Assigned Prefix |
| S8X | Not Assigned Prefix |
| S8Y | Highmark BCBS |
| S8Z | Not Assigned Prefix |
| S9A | Not Assigned Prefix |
| S9B | Premera BCBS of Alaska |
| S9C | BCBS of Texas |
| S9D | Not Assigned Prefix |
| S9E | Not Assigned Prefix |
| S9F | Not Assigned Prefix |
| S9G | Not Assigned Prefix |
| S9H | Regence BCBS |
| S9I | Not Assigned Prefix |
| S9J | Not Assigned Prefix |
| S9K | Not Assigned Prefix |
| S9L | Regence BCBS |
| S9M | BCBS of Michigan |
| S9N | Not Assigned Prefix |
| S9O | Not Assigned Prefix |
| S9P | Not Assigned Prefix |
| S9Q | Not Assigned Prefix |
| S9R | Anthem BCBS of Ohio |
| S9S | Independence Blue Cross |
| S9T | Anthem BCBS of Kentucky |
| S9U | Not Assigned Prefix |
| S9V | Not Assigned Prefix |
| S9W | Not Assigned Prefix |
| S9X | Not Assigned Prefix |
| S9Y | Not Assigned Prefix |
| S9Z | Not Assigned Prefix |
BCBS alpha numeric prefix S2A to S9Z is updated as per received latest information from authorized sources or websites of BCBS insurance and other reputed online portals. If any discrepancy found please let us know via the contact us page, we are committed to providing correct and genuine information.