Yes—Medicare Part B can cover a neuropsychological evaluation when a clinician suspects Alzheimer's disease. Coverage is not automatic; the testing must be medically necessary for diagnosis or treatment, according to the CMS Medicare Benefit Policy Manual. A neuropsychological evaluation is comprehensive testing of abilities such as attention, language, judgment, and executive function—the skills used to plan and make decisions. It can clarify cognitive problems, but it does not diagnose Alzheimer's by itself.
Medical information disclaimer: This article is for general educational purposes only and does not provide medical advice, diagnosis, or treatment. Always consult a physician or other qualified health professional about symptoms, medications, tests, or treatment decisions.
Official resources:
- Read the official guidance from CMS — Use this primary source to verify the official guidance.
- Read the official guidance from CMS — Use this primary source to verify the official guidance.
Table of Contents
- When is testing medically necessary?
- How does this fit into an Alzheimer's evaluation?
- What if Alzheimer's has already been diagnosed?
- What might the patient pay?
- What should you verify before scheduling?
When is testing medically necessary?
Testing is more likely to meet Medicare's requirements when mild or uncertain deficits need clarification. It may also qualify when the results will help establish a diagnosis, estimate prognosis, or guide treatment planning. One CMS-hosted local coverage policy also recognizes testing used to distinguish neurogenic dementia—cognitive decline caused by brain disease—from conditions such as depression.
These examples are not nationwide guarantees. When no national policy controls a service, the Medicare Administrative Contractor processing the claim may apply local rules. The clinician's documentation must explain the medical question and how the results will affect care.
How does this fit into an Alzheimer's evaluation?
An Alzheimer's diagnosis does not rest on one neuropsychological test. The Alzheimer's Association says clinicians combine medical history, neurologic examination, cognitive and functional assessment, and sometimes imaging or biomarker tests. Medicare Part B also covers a separate cognitive assessment and care-planning visit to establish or confirm dementia or Alzheimer's disease.
That clinical visit is not necessarily the same as a full neuropsychological evaluation. Before the appointment, ask which service the clinician is ordering. A thorough cognitive review may be sufficient in one case, while unclear or complicated symptoms may support comprehensive testing.
What if Alzheimer's has already been diagnosed?
Coverage becomes less certain when testing is requested routinely after the diagnosis. One CMS-hosted contractor billing article says neuropsychological testing is not covered for Alzheimer's disease once the diagnosis has been made.
That policy illustrates why repeat testing needs a documented diagnostic or treatment-planning purpose. Routine monitoring without a new medical question may not qualify. If the clinician expects new results to change care, the documentation should identify that expected use.
What might the patient pay?
Under Original Medicare, the separate cognitive assessment and care-planning visit is subject to the Part B deductible. The patient then pays 20% of the Medicare-approved amount, as explained on Medicare.gov's cognitive assessment coverage page. Do not assume a full neuropsychological evaluation will have the same cost.
The amount depends on whether Medicare covers the claim and whether the provider participates in Medicare. Medicare Advantage plans must cover medically necessary services covered by Original Medicare. However, Medicare.gov notes that these plans may require an in-network provider, a referral, or prior authorization.
What should you verify before scheduling?
Ask the ordering clinician and billing office to address the coverage requirements before testing: A referral or order does not guarantee payment. Before the appointment, confirm the applicable requirements with both the provider and the Medicare plan.
- What specific diagnostic or treatment question will the evaluation answer?
- Has the clinician documented why comprehensive testing is medically necessary?
- Is this a full neuropsychological evaluation or a cognitive assessment and care-planning visit?
- Does the provider participate in Medicare?
- Which local Medicare contractor requirements apply?
