AlphaPrefix

Alpha prefixes starting with M

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

Alpha prefixes starting with M (31), sorted alphabetically
PrefixPlanStatePlan typeLast checkedSource
M2XBlue Cross and Blue Shield of MontanaMT2025 Three-Character Prefix Updated March 2025 (Blue Cross and Blue Shield of Montana)
M3ABlue Cross and Blue Shield of KansasKSMedicare Advantage PPOKansas Preferred Blue Medicare Advantage Manual 2026 - Blue Cross and Blue Shield of Kansas
M7BPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
M7CPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
M8DAnthem Blue Cross and Blue Shield (Maine)MENew ID cards for some Anthem members, Anthem Blue Cross and Blue Shield Provider News (Maine)Source dated before 2022
MADPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MCEPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MCKAnthem Blue Cross and Blue Shield (Connecticut)CTAnthem Blue Cross and Blue Shield (Anthem Health Plans of Maine, Inc.) provider telephone and fax directory (ME_CONTACT_00002)
MDDCareFirst BlueCross BlueShield Community Health Plan MarylandMDMedicaidProvider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E)
MDVBlue Cross and Blue Shield of LouisianaLAMedicare AdvantageLouisiana Blue Professional Workshop Session B (Blue Cross and Blue Shield of Louisiana)
MGDPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MGGAnthem Blue Cross and Blue Shield (Connecticut)CTAnthem Blue Cross and Blue Shield (Anthem Health Plans of Maine, Inc.) provider telephone and fax directory (ME_CONTACT_00002)
MINPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MJGPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MKUPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MLYPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MNWPremera Blue Cross/Shared AdminWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MNYPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MORPremera Blue CrossAKPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MQGBlue Cross and Blue Shield of MinnesotaMNMedicaidProvider Bulletin P77-23: Minnesota Health Care Programs (MHCP) Operations Transitioning back to Blue Cross, effective January 1, 2024 - Blue Cross and Blue Shield of Minnesota
MQSBlue Cross and Blue Shield of MinnesotaMNMedicaidProvider Bulletin P77-23: Minnesota Health Care Programs (MHCP) Operations Transitioning back to Blue Cross, effective January 1, 2024 - Blue Cross and Blue Shield of Minnesota
MSJPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MSPPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MSQPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MSTPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MTUPremera Blue Cross/Shared AdminWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MUQPremera Blue CrossAKPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MVABlue Cross and Blue Shield of MontanaMT2025 Three-Character Prefix Updated March 2025 (Blue Cross and Blue Shield of Montana)
MVBCBA BlueVTPrefix Listing (Updated 02.07.25), Blue Cross and Blue Shield of Vermont
MWQPremera Blue CrossWAPremera Blue Cross Three Character Prefixes (Premera Blue Cross, form 020469)
MXJCareFirst BlueCross BlueShieldMulti-stateMedicare Advantage PPOProvider Quick Reference Guide (CareFirst BlueCross BlueShield, CUT6010-1E)