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Health Insurance

Prescription Drug Coverage

Every Marketplace plan covers prescription drugs, but each plan decides which drugs, and at what cost — which is set out in its formulary.

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Prescription Drug Coverage at a glance

Always a covered category
Prescription drugs are one of the essential health benefits.
The formulary is the detail
The plan's list of covered drugs, also called a drug list.
Tiers set the cost
Plans may put drugs in different cost-sharing levels.
There is an exceptions process
A way to ask a plan to cover a drug not on its list.

What is prescription drug coverage?

All Marketplace plans cover prescription drugs as one of the ten essential health benefit categories. The category is the floor, not the detail: each plan keeps a formulary — a list of the prescription drugs it covers — and may place those drugs on different tiers with different cost-sharing. Two plans that both cover prescription drugs can treat a particular drug quite differently, or one may not list it at all.

That is why the check that matters is drug by drug, at the strength and form you use, against a plan's current formulary. This page does not ask what you take; the plan's own drug list is where that comparison happens.

Tiers, and why they change the price

A plan may sort covered drugs into tiers, each with its own copay or coinsurance. Where a drug sits decides what you pay at the pharmacy, and a drug's tier can differ from plan to plan.

  • Look up each drug in the plan's formulary, not just whether the plan covers prescriptions.
  • Note the tier, and the copay or coinsurance attached to it.
  • Check whether the deductible applies to prescriptions under that plan.
  • Look for any requirement attached to the drug, such as prior authorization.

When a drug is not on the formulary

HealthCare.gov says you have the right to follow your insurance company's drug exceptions process to request a drug that is not on the plan's list. For plans that must cover the essential health benefits, federal rules set the timing: a decision on a standard request no later than 72 hours after it is received, and no later than 24 hours for an expedited request when waiting could seriously jeopardize health. If the request is denied, an external review is available.

The exceptions process is a right to ask, not a guarantee of approval. It is a reason to check the drug list before enrolling rather than after.

Common questions

Do I have to tell anyone which medications I take?
Not to read this page — it asks for nothing. When you compare plans, checking your prescriptions against each plan's drug list is something you can do yourself on the plan's formulary.

Sources

  1. 1.What Marketplace health insurance plans cover — Centers for Medicare & Medicaid Services (accessed Sep 2026)
  2. 2.Formulary (glossary) — Centers for Medicare & Medicaid Services (accessed Sep 2026)
  3. 3.Summary of Benefits and Coverage glossary — Centers for Medicare & Medicaid Services (accessed Sep 2026)
  4. 4.Getting prescription medications with your Marketplace plan — Centers for Medicare & Medicaid Services (accessed Sep 2026)
  5. 5.45 CFR 156.122 — Prescription drug benefits (exceptions process) — Office of the Federal Register / Government Publishing Office (accessed Sep 2026)

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