Understanding Medicare Coverage for Alzheimer’s Disease: What’s Included and What’s Not

Alzheimer’s disease is the most common form of dementia, affecting nearly 7 million U.S. adults—most of whom are 65 years or older and enrolled in Medicare.

Medicare provides extensive coverage for medically necessary services related to the prevention, diagnosis, and treatment of Alzheimer’s. Below is a detailed look at what each Medicare component offers.

Medicare Part A (Hospital Insurance)

Part A covers inpatient services that are medically necessary for Alzheimer’s, such as hospital stays, skilled nursing facility care (short‑term), and hospice care.

Medicare Part B (Medical Insurance)

Part B pays for outpatient services, including:

• Screening and diagnostic tests
• Doctor and specialist appointments
• Treatment‑related services and care
• Outpatient prescription drugs administered by a medical professional
• Physical, occupational, and speech therapy
• Mental‑health services (inpatient and outpatient)
• Durable medical equipment deemed medically necessary
• Ambulance transport
• Participation in eligible clinical trials

Medicare Part C (Medicare Advantage)

Medicare Advantage plans must include everything covered under Original Medicare (Parts A and B). Many plans add extra benefits—such as vision, dental, or wellness programs—depending on the specific policy you choose.

Medicare Part D (Prescription Drug Coverage)

Part D helps cover the home‑based medications used to manage Alzheimer’s symptoms. All Part D plans must cover protected drug classes (e.g., antidepressants, antiretrovirals). Coverage of additional drugs varies by each plan’s formulary.

Medicare Supplement (Medigap)

Medigap policies can offset out‑of‑pocket costs like deductibles and coinsurance for Original Medicare services, but they do not provide extra medical coverage beyond what Parts A and B offer.

Doctors’ Visits & Diagnostic Testing

Early detection is critical. Medicare covers annual wellness visits, cognitive assessments, diagnostic laboratory and non‑laboratory tests, and yearly depression screenings. All of these are billed under Part B when deemed medically necessary.

Medications

Traditional FDA‑approved drugs—such as cholinesterase inhibitors (donepezil, rivastigmine, galantamine) and the NMDA‑receptor antagonist memantine—help slow symptom progression. Newer agents, including suvorexant for insomnia and brexpiprazole for agitation, are also covered when prescribed.

Monoclonal antibodies that target beta‑amyloid (e.g., lecanemab, donanemab) may be covered by Part B for patients with mild cognitive impairment or mild dementia who enroll in a qualifying registry or study.

Part D covers most prescription drugs listed on your plan’s formulary, including the agents mentioned above.

Therapies & Support Services

Medicare Part B reimburses medically necessary therapies that address cognitive and functional changes, such as:

• Physical therapy
• Occupational therapy
• Speech‑language pathology
• Mental‑health counseling and psychiatric care

Durable Medical Equipment (DME)

When mobility becomes impaired, Medicare Part B can cover equipment prescribed for home use, including canes, walkers, crutches, lifts, and wheelchairs.

Alzheimer’s Coverage at a Glance

While Medicare’s benefits are broad, several important exclusions exist:

• Nursing‑home custodial care: Full‑time custodial care is not covered; you would be responsible for all costs.
• Off‑label drugs: Medications must be FDA‑approved for Alzheimer’s to be covered.
• Skilled nursing facility (SNF) stays: Medicare pays for up to 20 days without cost‑share; after that, you pay coinsurance, and stays beyond 100 days are not covered.

If you are unsure whether a specific service or medication is covered, contact your health‑care provider or Medicare plan administrator.

Alzheimer’s disease impacts millions of seniors, many of whom rely on Medicare. Understanding what is covered—and where gaps may appear—helps you plan for comprehensive, affordable care.

Disclaimer: The information provided is for educational purposes only and does not constitute insurance advice. Healthline Media does not sell, broker, or endorse any insurance products and is not licensed as an insurance entity in any U.S. jurisdiction.