Does health insurance cover prescriptions?
Prescription drug coverage is one of the ACA's ten essential health benefits, so most marketplace and employer plans cover prescriptions — but each plan's formulary decides which specific drugs are covered and at what cost.
What flips the answer
- Covered when
The drug is on your plan's formulary and any prior-authorization or step-therapy rules are satisfied.
- Not covered when
The drug isn't on the formulary and no coverage exception is granted.
- Not covered when
You have a short-term or grandfathered plan that isn't required to include prescription drug coverage.
Prescription drug coverage is a required essential health benefit on ACA marketplace plans and most employer plans. In practice that means the plan covers prescription medications, subject to the plan's formulary — the list of drugs it covers and the cost tier each falls into.
Formularies typically use tiers: generics carry the lowest cost-sharing, preferred brands more, and specialty or non-preferred drugs the most. A drug can be covered but still expensive if it sits on a high tier, and some drugs require prior authorization or step therapy — trying a cheaper alternative first.
A drug that isn't on the formulary at all is generally not covered, though plans must offer an exception process to request coverage when a non-covered drug is medically necessary. ACA plans also cover certain preventive medications, including many forms of contraception, with no cost-sharing in-network.
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