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Blue Cross and Blue Shield of Montana

Montana • 27 prefixes

Also known as: Montana Blue, BCBS Montana

Billing reference

Provider phone: (800) 447-7828
Verified Aug 2026 · source
2 exceptions — check before you submit
Depends on the plan type
(800) 634-3569 — Medicare claims
Depends on the region
(855) 258-3489 — Healthy Montana Kids (HMK) claims
Electronic payer ID: MTBLS
3 exceptions — check before you submit
Depends on the plan type
BCSMT — clearinghouse code name for standard commercial claims
HMAPD — Medicare Advantage plans
66006 — specific Medicare Advantage PPO/HMO lines
Claims mailing address: P.O. Box 660255, Dallas, TX 75266-0255
Verified Aug 2026 · source
4 exceptions — check before you submit
Depends on the plan type
P.O. Box 660071, Dallas, TX 75266-0071 — Medicare Supplement claims
Depends on the claim type
P.O. Box 660240, Dallas, TX 75266-0240 — Behavioral Health correspondence
P.O. Box 660247, Dallas, TX 75266-0247 — Dental claims
Depends on the claim stage
P.O. Box 4555, Scranton, PA 18505 — Claims Disputes
Timely filing limit: 365 daysCompare all plans
1 exception — check before you submit
Depends on the plan type
90 days — Some commercial plans and certain provider contracts
Prior authorization phone: (800) 447-7828
Provider website: https://www.mtblue.com

Billing Blue Cross and Blue Shield of Montana from outside Montana?

Usually you do not send the claim to Blue Cross and Blue Shield of Montana. Under the BlueCard program, a provider treating a member from another Blue plan submits the claim to their own local Blue Cross Blue Shield plan, which then routes it to Blue Cross and Blue Shield of Montana for processing.

The payer ID and claims address above are for filing within Montana. Filing from elsewhere, use your local plan's details instead.
Prior authorizationis generally handled by the member's home plan — so Blue Cross and Blue Shield of Montana, wherever you are.
Your timely filing limit is set by your own contract with your local Blue plan, not by the figure above. 365 days is customary but contracts vary.
To check eligibility and benefits for an out-of-area Blue member, call 1-800-676-BLUE (1-800-676-2583).

Arrangements vary by contract, and self-funded (ASO) accounts can differ — confirm with your local Blue plan before filing. See the BlueCard Program Provider Manual for the full rules.