Medicare's coverage of DNA testing depends on the type of test and why your doctor ordered it

Medicare covers some genetic and DNA tests, but not all of them. The key factor is whether your doctor ordered the test for a medical reason — to diagnose a condition, guide treatment, or assess risk for a disease that affects your health now. Medicare does not cover DNA tests ordered for ancestry, genealogy, or general wellness screening when there is no medical diagnosis or symptom involved.

If your doctor believes a genetic test is medically necessary, Medicare Part B typically covers it at 80 percent of the approved amount after you meet your deductible. You pay the remaining 20 percent. The test must be performed by a lab that is certified under the Clinical Laboratory Improvement Amendments (CLIA), which most major labs are.

Key Takeaways

  • Medicare covers DNA and genetic tests when ordered by your doctor for a medical reason, such as diagnosing a hereditary condition or guiding cancer treatment.
  • The test must be ordered by a physician and performed by a CLIA-certified lab; direct-to-consumer tests you order yourself are not covered.
  • You pay 20 percent of the Medicare-approved cost after your Part B deductible, unless you have a Medigap or Medicare Advantage plan that covers more.
  • Some genetic tests are considered experimental or not yet standard of care, and Medicare may deny coverage even with a doctor's order.
  • Your doctor's office or the lab can submit a coverage request to Medicare before the test is done to confirm whether it will be covered.

Types of genetic tests Medicare may cover

Medicare covers genetic tests for inherited cancer risk, such as BRCA1 and BRCA2 testing for breast and ovarian cancer, when you have a personal or family history of these cancers. It also covers tests for hereditary conditions like cystic fibrosis, sickle cell disease, and hemophilia when there is a clinical reason to test.

Pharmacogenomic testing — which shows how your genes affect your response to certain medications — may be covered if your doctor orders it to guide treatment decisions for a specific condition. Carrier screening for genetic conditions is covered when you are planning pregnancy and have a family history of a genetic disorder.

Prenatal genetic testing, including non-invasive prenatal testing (NIPT) and amniocentesis, is covered for pregnant beneficiaries when medically indicated. Testing for Alzheimer's disease risk genes (APOE testing) is covered in limited circumstances when ordered as part of a diagnostic workup for cognitive decline.

What Medicare does not cover

Medicare does not cover direct-to-consumer DNA tests that you order yourself, even if you pay out of pocket and then ask for reimbursement. These tests — the ones advertised for ancestry, family connections, or general health traits — are not considered medically necessary.

Genetic tests that are still considered experimental or not yet standard of care are typically denied. This includes some newer tests for complex diseases like Alzheimer's or Parkinson's when used for screening rather than diagnosis in someone with symptoms. Medicare also does not cover testing for non-medical traits, such as athletic ability or learning style.

Whole genome sequencing and whole exome sequencing are not automatically covered; Medicare reviews these on a case-by-case basis and often denies them unless there is strong clinical justification and the test is ordered by a specialist.

How to learn about your specific test is covered

The best way to know whether Medicare will cover your test is to ask your doctor to submit a coverage request before the test is performed. Your doctor's office or the lab can contact Medicare (or your Medicare Advantage plan) with details about the test, the reason for it, and your medical history. Medicare will respond with a coverage information, usually within a few business days.

You can also call Medicare directly at 1-800-MEDICARE (1-800-633-4227) and ask about coverage for a specific test. Have your doctor's name, the test name, and the medical reason for the test ready when you call. If you have a Medicare Advantage plan, call the plan's customer service number instead, because coverage rules vary by plan.

If Medicare denies coverage, you have the right to appeal. Your doctor can provide additional clinical information to support the appeal, and the lab may also submit documentation about why the test is medically necessary in your case.

Cost if Medicare covers the test

If Medicare approves the test, you pay 20 percent of the Medicare-approved amount after you meet your Part B deductible for the year. The deductible is set each year by Medicare; in 2024 it is $240, but this amount changes annually.

The actual cost depends on the type of test. A straightforward genetic test might cost $200 to $500 after insurance, while more complex testing can cost more. If you have a Medigap policy (supplemental insurance), it may cover your 20 percent coinsurance, which would reduce your out-of-pocket cost to zero. If you have a Medicare Advantage plan, your cost depends on that plan's rules — some cover genetic testing at a lower coinsurance rate, and some may cover it with no cost-sharing.

Medicare Advantage and Medigap coverage differences

Medicare Advantage plans (Part C) must cover at least what Original Medicare covers, but they can add extra benefits. Some plans cover genetic testing with lower coinsurance or no cost-sharing. Others may require prior authorization before the test, meaning your doctor must get approval from the plan before you have the test done. Check your plan's coverage documents or call the plan to ask about genetic testing coverage.

Medigap plans do not change what Medicare covers; instead, they help pay your share of costs. If Medicare covers the test and you have Medigap Plan G or Plan F, your Medigap plan pays your 20 percent coinsurance, so you have no out-of-pocket cost for the test itself. Other Medigap plans cover coinsurance at different rates.

What to do if your test is denied

If Medicare denies coverage for a genetic test your doctor ordered, you can appeal the decision. Your doctor can submit a detailed letter explaining why the test is medically necessary for your specific situation. The lab may also provide clinical evidence that the test is standard of care for your diagnosis.

You have the right to request a reconsideration, and if that is denied, you can request a hearing before an administrative law judge. This process takes time — usually several weeks to months — but many appeals are successful, especially when your doctor provides strong clinical justification.

If you cannot afford to wait for an appeal and need the test urgently, you can choose to pay for it out of pocket. Keep all receipts and documentation; if your appeal is later approved, you may be able to request reimbursement from Medicare.

Frequently Asked Questions

Does Medicare cover ancestry DNA tests?

No. Ancestry and genealogy tests are not considered medically necessary, so Medicare does not cover them. These are direct-to-consumer tests and fall outside Medicare's coverage rules, even if ordered by a doctor.

Will Medicare cover BRCA testing if I have no family history of cancer?

Medicare may cover BRCA testing based on your personal medical history, age, or other risk factors, even without a family history. Your doctor must document the medical reason for the test. Coverage decisions are made on a case-by-case basis.

Do I need prior authorization from Medicare before having a genetic test?

Original Medicare does not require prior authorization, but your doctor can request a coverage information before the test to confirm it will be covered. If you have a Medicare Advantage plan, check your plan documents — many require prior authorization.

What if my doctor orders a genetic test but Medicare says it is experimental?

You can appeal Medicare's decision. Ask your doctor to submit a letter with clinical evidence that the test is standard of care for your condition. If the appeal is denied, you can pay out of pocket and request reimbursement if circumstances change.

Are genetic counseling visits covered by Medicare?

Yes. Medicare covers genetic counseling when ordered by your doctor as part of the evaluation for a genetic condition. You pay 20 percent coinsurance after your deductible, the same as for other Part B services.