When is prior authorization commonly required in MA/Part D plans?

• A. Prior authorization is required for all prescriptions.
• B. Prior authorization is never used in MA plans.
• C. Prior authorization is only for emergency services.
• D. Prior authorization is used to approve certain services or medications before they are provided.

Answer: (D)

Prior authorization is a utilization-management step used by Medicare Advantage (MA) and Part D plans to approve certain services or medications before they are provided. This process requires the prescriber or patient to submit information showing medical necessity, the appropriate indication, and details like dosage and duration. The plan reviews the request against formulary rules, coverage criteria, and methods such as step therapy or quantity limits. If the authorization is granted, the service or drug is covered as prescribed; if not, the patient may need to choose an alternative treatment, pay out of pocket, or pursue an appeal. It isn’t applied to every prescription and isn’t limited to emergencies; it’s commonly used for expensive, non-formulary, or high-risk items to ensure appropriate use and manage costs.