πŸ“– Medicare EOB Reference Guide

⚠️ Code 253 - Sequestration Reduction

2% mandatory reduction on ALL Medicare & Medicare Advantage claims. Appears BEFORE copays/coinsurance on EOB/RA.

πŸ’Š PCN Identifiers (Pharmacy Claims)

ContainsPayer TypeExamples
ADV or MEDDMedicare Part DMEDDADV, MEDDAET, MEDDPRIME, PARTD
MPPP prefixM3P SecondaryMPPP, MPPP7777
MCAIDMedicaidRXMCAID, MCAIDOH
BIN 003858TRICARE/ESI003858

πŸͺͺ ID Formats (Medicare Adv vs Commercial)

PayerMedicare AdvantageCommercialMedicaid
Aetna10XXXXXXXXXXWXXXXXXXXXAll digits
HumanaHXXXXXXX (8 digits)All digitsH+digits
BCBSLetters+digitsPrefix+digitsVaries

99% Rule: Patients 65+ = Medicare/MA

πŸ—ΊοΈ MAC Jurisdictions 2026

MACJurisdictionStates
NGSLIL, MN, WI
NoridianEAK, WA, OR, ID, MT
NovitasHAR, CO, LA, MS, NM, OK, TX
CGS15KY, OH