Medicare Part D Copay and Coinsurance

If your Part D plan requires you to pay a Part D yearly deductible, you will pay the full amount for your prescriptions up until the time you have met your deductible before the plan begins to share the cost of your prescriptions. When sharing the cost of your prescriptions, the amount of your Medicare Part D costs is usually in the form of a fixed amount (Medicare Part D copay), or a percentage of the drug cost (Medicare Part D coinsurance).

Be sure to consider whether the plan requires you to pay a copay or a coinsurance amount when filling your prescriptions, as the difference may affect your out-of-pocket expenses.