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CareFirst BlueCross BlueShield

Maryland/District of Columbia/Northern Virginia • 1000 prefixes

Also known as: CareFirst of Maryland, Group Hospitalization and Medical Services, Inc.

Billing reference

Provider phone: (800) 842-5975
Electronic payer ID: 00580
Verified Aug 2026 · source
3 exceptions — check before you submit
Depends on the claim type
SB690 — Maryland region professional and institutional claims
Other cases
75191 — CareFirst Administrators
45281 — specific product line per March 2024 update
Claims mailing address: P.O. Box 14115, Lexington, KY 40512-4115
Verified Aug 2026 · source
5 exceptions — check before you submit
Depends on the plan type
P.O. Box 14362, Lexington, KY 40512 — Community Health Plan Maryland (Medicaid) claims
P.O. Box 14113, Lexington, KY 40512-4113 — Federal Employee Program (FEP) claims
P.O. Box 4495, Scranton, PA 18505 — Medicare Advantage claims
P.O. Box 915, Owings Mills, MD 21117 — Medicare Advantage general correspondence
P.O. Box 14115, Lexington, KY 40512-4115 — Standard commercial / local service area professional claims
Timely filing limit: 365 daysCompare all plans
Verified Aug 2026 · source
1 exception — check before you submit
Depends on the product
365 days — CareFirst Dual Eligible Special Needs (DSNP) / Advantage Dual Prime
Prior authorization phone: (866) 773-2884
Provider website: https://provider.carefirst.com

Billing CareFirst BlueCross BlueShield from outside Maryland, District of Columbia or Northern Virginia?

Usually you do not send the claim to CareFirst BlueCross BlueShield. 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 CareFirst BlueCross BlueShield for processing.

The payer ID and claims address above are for filing within Maryland, District of Columbia or Northern Virginia. Filing from elsewhere, use your local plan's details instead.
Prior authorizationis generally handled by the member's home plan — so CareFirst BlueCross BlueShield, 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.

CareFirst BlueCross BlueShield

Billing reference

Billing CareFirst BlueCross BlueShield from outside Maryland, District of Columbia or Northern Virginia?

About CareFirst BlueCross BlueShield

All 1000 prefixes for CareFirst BlueCross BlueShield