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4 min read

Part D drug coverage and Extra Help

How drug plans work and how to get help paying for prescriptions.

How Part D plans work

Each Part D plan has a list of covered drugs called a formulary. Drugs are placed in tiers; lower tiers usually cost less. Plans also have preferred pharmacies that can lower your cost.

  • Check that every medication you take is on the plan’s formulary.
  • Note any rules such as prior authorization or quantity limits.
  • There is a yearly cap on what you pay out of pocket for covered drugs.

Extra Help (Low-Income Subsidy)

Extra Help is a federal program that helps people with limited income and resources pay Part D premiums, deductibles, and copays. You can apply through Social Security. If you qualify for Medicaid or a Medicare Savings Program, you usually qualify automatically.

This guide is general education, not advice about a specific plan. Rules and amounts can change each year.

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