Does Medicare Cover Allergy Testing?

Updated June 4, 20267 min readReviewed against medicare.gov

Yes. Medicare Part B covers allergy testing as a diagnostic service when a Medicare-enrolled doctor orders it and it is medically necessary to diagnose or treat your allergies. Covered tests include skin (scratch/prick and intradermal) tests, patch tests, and blood (specific IgE) tests. After you meet the annual Part B deductible ($283 in 2026), you typically pay 20% of the Medicare-approved amount and Medicare pays the other 80%. Some allergy tests — such as cytotoxic food-allergy tests and provocative/neutralization (Rinkel) testing — are never covered.

Does Medicare cover allergy testing, and under which part?

Allergy testing is covered under Medicare Part B (medical insurance) as a diagnostic clinical service. For Medicare to pay, a Medicare-enrolled physician must order the test, and the test must be medically necessary to diagnose or treat an allergic condition.

Part B is the part that handles doctor-ordered outpatient diagnostic tests like allergy testing. This is different from Part D, which is the separate prescription drug benefit that may help with allergy medicines you take at home.

Part B: covers the actual allergy testing your doctor orders (the focus of this guide).
Part D: a separate drug plan that may cover at-home allergy medicines if they are on the plan's formulary.
Medicare Advantage (Part C): must cover at least what Part B covers, but uses its own network and cost-sharing rules.

Which allergy tests does Medicare cover?

Medicare covers several established types of allergy testing when they are medically necessary. The most common are skin tests and a blood test that measures allergy antibodies.

Percutaneous skin tests — the scratch, prick, or puncture tests applied to the surface of the skin.
Intracutaneous (intradermal) skin tests — allergens injected just under the skin.
Patch and photo-patch tests — used mainly to find substances that cause skin (contact) reactions.
In-vitro specific IgE blood tests — a blood draw that measures allergy antibodies to specific allergens.

Does Medicare cover blood (IgE) testing instead of skin testing?

Yes, but with a limit. Medicare covers in-vitro (blood) specific IgE testing when it is medically reasonable as a substitute for skin testing — for example, when skin testing is not possible because of a skin condition, certain medications, or risk to the patient.

Because blood IgE testing is treated as an alternative to skin testing, Medicare generally will not cover both blood testing and skin testing for the same allergens. Your doctor chooses the method that fits your situation and documents why.

Which allergy tests and treatments does Medicare NOT cover?

Some tests and treatments are specifically excluded because the evidence has not shown them to be safe and effective. These are not covered no matter who orders them.

Cytotoxic (leukocyte) tests for food allergies — excluded since August 5, 1985.
Sublingual, intracutaneous, and subcutaneous provocative and neutralization testing (the Rinkel test), and neutralization therapy for food allergies — excluded since October 31, 1988.
Sublingual immunotherapy (allergy drops or under-the-tongue tablets) — not covered.
Note: covered subcutaneous allergy shots (immunotherapy) given by a qualified physician ARE covered under Part B when medically necessary — see the costs and FAQs below.

What does 'medically necessary' mean for allergy testing?

Medicare does not cover allergy testing as a routine screening or out of general curiosity. The testing has to be tied to real symptoms and a real treatment plan.

You have a clinically significant allergic history or symptoms that are not controllable by basic (empiric/conservative) treatment.
The testing is based on a face-to-face history and physical exam by your doctor.
The testing is part of a complete allergy treatment program, not a stand-alone test.
A Medicare-enrolled physician must order the test for Medicare to pay.

How much does allergy testing cost with Medicare in 2026?

For covered allergy testing under Original Medicare Part B, you first pay the annual Part B deductible, which is $283 in 2026. After the deductible is met, Medicare pays 80% of the Medicare-approved amount and you pay the remaining 20% coinsurance.

These costs are on top of the standard Part B premium, which is $202.90 per month in 2026. Your actual out-of-pocket amount depends on how much testing your doctor performs and the Medicare-approved rate for each test.

2026 Part B deductible: $283 per year (applies before coinsurance starts).
After the deductible: Medicare pays 80%, you pay 20% coinsurance of the approved amount.
2026 standard Part B premium: $202.90 per month.
Medigap (Medicare Supplement) policies can help pay part or all of that 20% coinsurance — see the FAQs.
Medicare Advantage plans may use copays and prior authorization instead of the standard 20% — check your plan's Evidence of Coverage.

Frequently asked questions

Does Medicare cover food allergy testing?

Medicare covers medically necessary food allergy testing using accepted methods such as skin tests and specific IgE blood tests when ordered by your doctor. However, certain food-allergy tests are specifically excluded and never covered: cytotoxic (leukocyte) tests and provocative/neutralization (Rinkel) testing.

Does Medicare cover allergy shots (immunotherapy)?

Yes. Subcutaneous allergy shots (immunotherapy) given by a qualified physician are covered under Part B when medically necessary, with the standard 20% coinsurance after the deductible. Sublingual immunotherapy — allergy drops or under-the-tongue tablets — is not covered by Medicare.

Does Medicare cover allergy medications like antihistamines and nasal sprays?

Allergy medicines you take at home, such as oral antihistamines and nasal sprays, are not covered under Part B. They may be covered under a Medicare Part D prescription drug plan if the specific medication is on that plan's formulary. Check your Part D plan's drug list.

Can Medigap help pay the 20% coinsurance for allergy testing?

Yes. If you have Original Medicare, a Medigap (Medicare Supplement) policy can help pay the 20% Part B coinsurance you would otherwise owe for covered allergy testing. How much it covers depends on which Medigap plan letter you have. Medigap does not work with Medicare Advantage plans.

Does Medicare Advantage cover allergy testing the same as Original Medicare?

Medicare Advantage (Part C) plans must cover at least everything Original Medicare Part B covers for allergy testing. However, they can apply different in-network cost-sharing, copays, and prior-authorization rules. Costs and requirements vary by plan, so confirm the details in your plan's Evidence of Coverage.

Does a doctor need to order allergy testing for Medicare to pay?

Yes. Medicare requires that a Medicare-enrolled physician order the testing, and that it be based on a face-to-face history and physical exam. The testing must be medically necessary and part of a complete allergy treatment plan, not a routine screening.

Sources

Related guides

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