EOB denial code MA01: what it means

What it means

A Medicare alert about your appeal rights: you can appeal in writing, a different reviewer will handle it, and you generally have 120 days from the notice date to file.

Official X12 description

“Alert: If you do not agree with what we approved for these services, you may appeal our decision. To make sure that we are fair to you, we require another individual that did not process your initial claim to conduct the appeal. However, in order to be eligible for an appeal, you must write to us within 120 days of the date you received this notice, unless you have a good reason for being late.”

Typical cause

Attached to a Medicare determination to explain how to appeal it.

What to do next

1. 1If you disagree, file a written appeal within 120 days of the notice date.
2. 2Decode the CARC reported with this alert to understand what is being denied or adjusted.