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Providers in DC, DE, MD, NJ & PA

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Outreach and Education

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Provider Specialty: Medicare secondary payer (MSP)

Provider specialty: Medicare secondary payer (MSP)

This is a central location for all MSP information, including links to related CMS resources and references. General information regarding the Medicare program overall can be found using the topics down your left navigation bar. Please subscribe to our mailing lists to stay current with Medicare.

MSP entitlement

Admission questions to ask beneficiaries

Coordination of benefits

Coordination of benefits & recovery overview

MSP Contractor (formerly Benefits Coordination and Recovery Center (BCRC))

Part A other insurer intake tool

MSP billing

Billing and coding

Claim adjustment segment coding worksheet

Conditional payment

MSP frequently asked questions

Medicare secondary payer booklet

Medicare secondary payer: Don’t deny services & bill correctly

Medicare secondary payer (MSP) – Medicare as the tertiary payer

Medicare secondary payer (MSP) educational series questions

Medicare secondary payer (MSP) ongoing responsibility for medicals (ORM)

Medicare secondary payer (MSP) provisions

Medicare secondary payer (MSP) status location RB75XX or PB75XX

Quick reference chart for billing Medicare secondary payer (MSP) claims

Reason codes 31102 and 31361

Reason code U6802

Submission checklist

Value code 44 decision tree

CMS change requests and MLN Matters articles

Change Request (CR) 8486, Instructions on using the claim adjustment segment (CAS) for Medicare secondary payer (MSP) Part A CMS-1450 paper claims, Direct Data Entry (DDE), and 837 institutional claims transactions

Change Request (CR) 8984, Claims processing Medicare secondary payer (MSP) policy and procedures regarding Ongoing responsibility for medicals (ORM)

Change Request (CR) 9099, Instructions for the shared systems and Medicare administrative contractors (MACs) to follow when a Medicare residual payment must be paid on workers’ compensation Medicare set-aside arrangement (WCMSA) or for ongoing responsibility of medicals (ORM) non-group health plan (NGHP) Medicare secondary payer (MSP) claims

Change Request (CR) 9382, Electronic Correspondence Referral System (ECRS) web updates to claims processing Medicare secondary payer (MSP) policy and procedures regarding ongoing responsibility for medicals (ORM)

MLN Matters Article: MM10863, Updating language to clarify for providers Chapter 3, section 20 and Chapter 5, section 70 of the Medicare Secondary Payer Manual

MLN Matters Article: MM11945, Update to the model admission questions for providers to ask Medicare beneficiaries

MLN Matters Article: MM12765, Significant updates to internet only manual (IOM) publication (Pub.) 100-05 Medicare secondary payer (MSP) Manual, Chapter 5

MLN Matters Article: MM13694, Adjustment of Medicare Claims Where Veterans Affairs Also Made Payment

Special Edition Article: SE17019, Accepting Payment from Patients with a Medicare Set-Aside Arrangement

Special Edition Article: SE21002, Billing for services when Medicare is a secondary payer

CMS resources

CMS Medicare secondary payer webpage

CMS IOM Pub. 100-05 Medicare Secondary Payer Manual

Introduction to Medicare

Medicare secondary payer recovery portal

MSP end stage renal disease (ESRD)

MSP working aged

Workers’ compensation Medicare set aside arrangements

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Last modified: 06/25/2025

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