Three characters preceding the subscriber identification number on Blue Cross Blue Shield (BCBS) cards required for routing claims.
Blue Cross Blue Shield Association's website, which contains information for providers.
A toll-free 800 number, 1-800-676-BLUE (2583), for provider out-of-state membership and coverage information.
Member's Benefit Plan
The BCBS Plan where the patient's policy was issued.
Provider's Servicing Plan
The BCBS Plan where the services are rendered.