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Coordination of Benefits Agreement (COBA) Companion Guide for Health Insurance Portability and Accountability Act (HIPAA) 837 Institutional and Professional Medicare Coordination of Benefits Version 5010 (COB)/Crossover Claim Transactions

Guidance for changes to the COBA HIPAA 5010A1 and A2 COB Companion Guide.

Download the Guidance Document


Issued by: Centers for Medicare & Medicaid Services (CMS)

Issue Date: July 26, 2017

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DISCLAIMER: The contents of this database lack the force and effect of law, except as authorized by law (including Medicare Advantage Rate Announcements and Advance Notices) or as specifically incorporated into a contract. The Department may not cite, use, or rely on any guidance that is not posted on the guidance repository, except to establish historical facts.