Does Medicare cover a bone density scan?
Usually covered
Yes — Medicare Part B covers a bone mass measurement (such as a DXA scan) once every 24 months at no cost for beneficiaries who meet one of five qualifying conditions, and more often when it's medically necessary.
- Covered when You meet one of the five qualifying conditions — estrogen-deficient and at risk for osteoporosis, X-ray evidence of osteoporosis/osteopenia/vertebral fracture, steroid therapy, primary hyperparathyroidism, or monitoring osteoporosis drug therapy — and it has been 24 months since your last covered scan.
- Covered when A repeat scan sooner than 24 months is medically necessary — for example, establishing a baseline before starting steroid or osteoporosis therapy, or checking whether treatment is working — and the medical reason is documented.
- Not when You want the scan purely as general screening without any of the qualifying conditions documented — Medicare's bone mass benefit is condition-gated, not age-gated, and an unqualified order will be denied.
What flips the answer
- Covered when
You meet one of the five qualifying conditions — estrogen-deficient and at risk for osteoporosis, X-ray evidence of osteoporosis/osteopenia/vertebral fracture, steroid therapy, primary hyperparathyroidism, or monitoring osteoporosis drug therapy — and it has been 24 months since your last covered scan.
- Covered when
A repeat scan sooner than 24 months is medically necessary — for example, establishing a baseline before starting steroid or osteoporosis therapy, or checking whether treatment is working — and the medical reason is documented.
- Covered when
The provider accepts Medicare assignment — that is the condition under which the test is free; with assignment, you pay neither deductible nor coinsurance for a covered screening.
- Not covered when
You want the scan purely as general screening without any of the qualifying conditions documented — Medicare's bone mass benefit is condition-gated, not age-gated, and an unqualified order will be denied.
- Not covered when
You are inside the 24-month window with no new medical justification — early repeat screenings without documented necessity are not covered.
- Not covered when
You use a non-assignment provider or, in Medicare Advantage, an out-of-network imaging center — the zero-cost guarantee (and possibly coverage itself, for MA out-of-network) no longer holds.
Key facts
- Verdict
- Usually covered
- Applies to
- a bone density scan · Medicare
- Covered when
- You meet one of the five qualifying conditions — estrogen-deficient and at risk for osteoporosis, X-ray evidence of osteoporosis/osteopenia/vertebral fracture, steroid therapy, primary hyperparathyroidism, or monitoring osteoporosis drug therapy — and it has been 24 months since your last covered scan.
- Not covered when
- You want the scan purely as general screening without any of the qualifying conditions documented — Medicare's bone mass benefit is condition-gated, not age-gated, and an unqualified order will be denied.
- Verified
- 2026-08-12 · 3 primary sources
Bone density testing is one of Medicare's defined preventive benefits, and the terms are unusually concrete. Medicare Part B covers bone mass measurements — the DXA (dual-energy X-ray absorptiometry) scan is the common version — once every 24 months, and more often if medically necessary. When the doctor or other provider accepts assignment, you pay nothing for the test: no deductible, no coinsurance. The purpose is to find out whether you are at risk for broken bones, and the results guide osteoporosis prevention or treatment.
The catch, such as it is, is eligibility. This is not an everyone-over-65 benefit; you must meet at least one of five conditions: you are a woman whose doctor determines she is estrogen-deficient and at risk for osteoporosis based on medical history and other findings; your X-rays show possible osteoporosis, osteopenia, or vertebral fractures; you are taking (or planning to begin) prednisone or steroid-type drugs; you have been diagnosed with primary hyperparathyroidism; or you are being monitored to see whether your osteoporosis drug therapy is working. In practice these categories reach most of the people whose doctors want the test — postmenopausal women at risk, long-term steroid users, and anyone already on osteoporosis treatment — but the qualifying condition needs to be documented in the order.
The every-24-months clock is the other operational detail. Medicare pays for the screening on a two-year cycle, with more frequent testing allowed when medically necessary — typically when you start a new therapy that demands a new baseline or when monitoring treatment response. If a repeat scan lands early without a documented medical reason, expect a denial. As with other preventive services, the zero-cost promise also depends on the provider accepting assignment, so it is worth confirming when you book.
In Medicare Advantage the benefit follows you: plans must cover everything Original Medicare covers, and preventive services like bone mass measurement are generally free in-network. The plan may route you to in-network imaging and apply its own rules on early or extra scans. If a plan denies a test your doctor says is medically necessary, you have appeal rights — and medicare.gov, 1-800-MEDICARE, and your State Health Insurance Assistance Program (SHIP) can walk you through them at no charge.
What people typically pay
Nothing — the test is $0 with no deductible when you meet a qualifying condition and the provider accepts assignment. Medicare Advantage plans mirror this for in-network preventive care.
A self-pay DXA scan commonly runs roughly $100–$300 depending on facility and region — modest as imaging goes, which is why the practical issue is usually the 24-month timing and documentation rather than an unaffordable bill.
Follow-up services triggered by an abnormal result (physician visits, medications) are billed under their own rules, not the preventive benefit.
How to actually get it covered
Ask your doctor which qualifying condition applies to you — estrogen deficiency with osteoporosis risk, X-ray findings, steroid use, hyperparathyroidism, or therapy monitoring — and make sure it appears on the order, because that documentation is the coverage.
Check the calendar: confirm at least 24 months have passed since your last covered bone mass measurement, or that your doctor has documented why an earlier scan is medically necessary.
Book with a provider that accepts Medicare assignment (or an in-network facility in your Medicare Advantage plan) and confirm when scheduling that the scan will be billed as the Medicare preventive bone mass benefit.
Keep the results and the date: the report is your baseline for the next cycle, and knowing your scan date prevents an accidental early rebooking that would be denied.
If you are denied — commonly for a missing qualifying diagnosis or an early repeat — ask the ordering doctor to correct the documentation and resubmit, and use 1-800-MEDICARE or your SHIP for free appeal help if needed.
Common questions
How often will Medicare pay for a DXA bone density scan?
Once every 24 months for qualifying beneficiaries, and more often when medically necessary — for instance, to establish a baseline before starting steroid therapy or to monitor how well osteoporosis medication is working. The two-year clock runs from your last covered scan, so an early repeat without a documented medical reason will generally be denied. When it is covered and the provider accepts assignment, you pay nothing for the test.
Does every woman over 65 automatically qualify for a free bone density test?
Not automatically — Medicare's benefit is gated by condition, not age. The most common qualifying route for older women is the doctor determining that the patient is estrogen-deficient and at risk for osteoporosis based on her medical history and other findings, which in practice covers many postmenopausal women. But that determination needs to be made and documented by the doctor; the scan is not a universal age-triggered screening like an annual wellness visit.
Is a bone density scan free under Medicare, or do I pay the Part B deductible?
When you qualify and the provider accepts assignment, the test is free — you pay nothing, and the Part B deductible does not apply. That is the standard treatment for Medicare's designated preventive services. Costs can appear only at the edges: a provider who does not accept assignment, an out-of-network facility in a Medicare Advantage plan, or additional non-preventive services performed during the same visit, which are billed separately under normal Part B rules.
What if I'm on prednisone — do steroids really qualify me for the scan?
Yes. Taking prednisone or steroid-type drugs — or planning to begin that treatment — is one of the five qualifying conditions Medicare lists, because long-term glucocorticoid use is a major driver of bone loss. This makes baseline and follow-up bone density testing coverable for steroid patients of any sex. Make sure the prescriber notes the steroid therapy on the order for the scan, since that documentation is what the claim is paid against.
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