Education & TrainingMedicare AdvantageMedicaidDecember 26, 2024

Prefix required on claim submissions

Starting April 11, 2025, the Blue Cross Blue Shield Association prefix shown on the member ID card will be required when filing claims to Anthem, whether by electronic or paper submission.

The member ID can be found on the front, left side of the card. You must include the three‑character alphabetic or alphanumeric prefix; for example, XDJ or A8G.

If the prefix is missing on the claim, your claim will be rejected and will not be accepted for processing. The claim will need to be refiled with the complete member ID, with the prefix, as shown on the card.

The verbiage below is what will show when a claim is rejected due to a missing prefix:

  • Professionals Claim 60126
  • Institutional Claim 60447

“A valid Blue Cross Blue Shield Association prefix is required for adjudication. Refile the claim with the member ID as displayed on the card."

This change is to support successful claims submission and ensure timely claims payments. Thank you for your cooperation.

Anthem Blue Cross is the trade name of Blue Cross of California. Anthem BC Health Insurance Company is the trade name of Anthem Insurance Companies, Inc. Anthem Blue Cross, Anthem Blue Cross Life and Health Insurance Company, Anthem BC Health Insurance Company, and Blue Cross of California Partnership Plan, Inc. are independent licensees of the Blue Cross Association. Anthem is a registered trademark of Anthem Insurance Companies, Inc.

Blue Cross of California is contracted with L.A. Care Health Plan to provide Medi-Cal Managed Care services in Los Angeles County.

CABC-CDCR-074358-24-CPN73793

PUBLICATIONS: January 2025 Provider Newsletter