Companion Guides

CMS publishes a companion guide to supplement the implementation guide that offers further instruction specific to Medicare. The 5010A2 - Part A 837 Companion Guide offers specific 837I electronic claim loop and segment references.

MAC companion guides are technical documents, and providers may need help from software vendors or clearinghouses to interpret and implement the information within the guides. Visit the Medicare Fee-for-Service Companion Guides webpage 5010A2 - Part A 837 Companion Guide to locate your MAC’s Companion Guide.

In Lesson 4, we’ll discuss the content that users enter into the 837I.