Medicare Reimbursement Declined -

These include duplicate claim submissions, services performed by unqualified employees, or missing prior authorizations for certain equipment. The Appeals Process

Claims may be denied or "downcoded" if the billing code reflects a more severe illness or expensive treatment than the medical record supports. Medicare Reimbursement Declined

The most frequent cause is simply failing to submit requested progress notes or medical records. These include duplicate claim submissions

Most denials can be traced to preventable administrative or clinical documentation issues: services performed by unqualified employees

If a claim is denied, you have a legal right to appeal the decision. For Original Medicare (Part A and B), there are five distinct levels of appeal: Medicare Program Integrity Manual, Chapter 6 - CMS