Does Medicare cover Aimovig?

Aimovig (erenumab-aooe) is a once-a-month injectable medication that can help prevent migraine in adults.

Certain parts of Medicare will usually cover prescription medications, like Aimovig, that a person takes at home.

Medicare Part D helps cover the costs of prescription drugs, like AImovig. These plans are provided by Medicare-approved private insurance companies. People with Original Medicare (Part A and Part B) can purchase a stand-alone Part D plan from one of these companies.

Each Part D plan has a list of prescription medications that it covers, which is known as a formulary. Before choosing a plan, a person may want to check that their medications are on the formulary. Each formulary must include at least two drugs from the most commonly prescribed classes and categories. However, the insurance companies can choose which medications to cover.

Medicare Advantage (Part C) plans often include prescription drug coverage (Part D) as part of their bundled coverage. The prescription coverage from these plans is the same as stand-alone Part D plans.

The costs of prescription medications with Medicare Part D can vary by plan and the tier they are in. Each Part D plan can place covered medications into tiers. Generally, medications in lower tiers will cost less.

Since Aimovig is a brand-name drug, it will typically fall into a middle tier and have a medium copayment.

Part D deductibles vary by plan, but may not exceed $590 in 2025. Once a person meets the deductible, their Part D plan will generally pay 75% of the cost of prescription drugs.

When their out-of-pocket costs reach $2,000 in 2025, they automatically enter catastrophic coverage and pay nothing for their prescriptions for the rest of the year. This out-of-pocket maximum is set to rise to $2,100 in 2026.