How do Medicare Part D prescription drug plans work?
Who is this for?

If you have a Part D prescription drug plan, you might need help understanding how it works. This information explains the different stages of coverage and how you move through them.
Part D prescription drug coverage has three stages:
- Initial coverage stage
- Coverage gap (also known as the gap or the donut hole)
- Catastrophic coverage stage
Not everyone will have all the stages. For example, you might not have a coverage gap because you get Extra help paying for your prescription drugs.
So how do you know which stage you're in? It depends on how much you've spent on prescription drugs. You can visit Medicare.gov for more information on cost.
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