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1 min readPublished June 17, 2026
What Is Medicare Prior Authorization? A Plain-Language Overview

What Is Medicare Prior Authorization? A Plain-Language Overview

Why some Medicare plans require approval before care — and what to verify before you assume a service is covered.

What prior authorization means

Some Medicare plans require the plan to approve certain services before they pay. That step is often called prior authorization or pre-approval.

It is not unique to one carrier — it appears in many Medicare Advantage plans and is a frequent source of confusion in public complaints.

Questions to ask before care

  • Is this service on the plan's prior authorization list?
  • Who submits the request — your provider or the facility?
  • What happens if you are mid-treatment and authorization expires?

This article is educational only. Verify current plan documents and Medicare.gov for rules that apply to you.

Frequently asked questions

Part B Optimizer Benchmark Tool Editorial Team

Plain-language Medicare education reviewed for accuracy and CMS-compliant tone. We do not sell insurance, recommend specific carriers, or enroll you in coverage.

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