Rx
Coverage
Prescription Drugs
Formularies, tiers, and the coverage gap.
Medicare prescription drug coverage comes through Part D — either a stand-alone plan or built into a Medicare Advantage plan.
Key points
- Every plan has a formulary — check that your medications are on it.
- Drugs are grouped into tiers; lower tiers cost less.
- The coverage gap ("donut hole") has narrowed, and there's now a yearly out-of-pocket cap.
- Plans change formularies and pricing every year — it pays to review during AEP.
Next steps
Related topics
Educational only. This information is not personalized advice. For your specific situation, verify at Medicare.gov or speak with a licensed Medicare professional.