YDN BCBS prefix

Listed for Blue Cross and Blue Shield of Montana (MT) in our data.

Unofficial reference. Prefixes change. Verify with the plan before submitting a claim. Data last updated .

Plan
Blue Cross and Blue Shield of Montana
State or region
MT
Plan type
POS
Notes
Blue Focus POS purchased on the Health Care Exchange (Narrow Network)
Source
2025 Three-Character Prefix Updated March 2025 (Blue Cross and Blue Shield of Montana)https://www.bcbsmt.com/docs/forms/provider/mt/mt-group-three-character-prefix-guide.pdfSource dated .
Last checked

What to do next

Before you submit a claim, confirm the member's eligibility and plan with the plan itself, for example by calling the phone number on the member's ID card. Prefix assignments can change, so details may differ from what we found on the date we last checked.

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