What Are Bone Density Tests and Why Medicare Covers Them
A bone density test, also called a DXA scan or DEXA scan, measures how much mineral is packed into your bones. Your bones naturally contain calcium and other minerals that make them strong. Over time, especially as you age, bones can lose some of this mineral content, becoming weaker and more likely to break. A bone density test uses special X-ray technology to detect how dense your bones are compared to healthy young adult bones.
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Medicare recognizes bone density testing as an important preventive service. The Centers for Disease Control and Prevention reports that about 1 in 4 women over age 50 experience osteoporosis-related fractures in their lifetime. For men, the risk is lower but still significant. Osteoporosis causes bones to become so weak that they break from a simple fall or, in some cases, from minor bumps or sudden movements.
The test itself is painless and takes about 10 to 30 minutes. You lie on a padded table while a scanning arm moves over your body, usually scanning your hip, spine, and sometimes your forearm. The amount of radiation exposure is very small—much less than a standard chest X-ray. Because early detection of bone loss can lead to treatment options that slow or stop further loss, Medicare decided to cover this screening test for people who meet certain conditions.
Medicare's coverage reflects medical evidence showing that bone density screening can identify people at higher risk for fractures before they happen. This allows doctors and patients to discuss prevention strategies, lifestyle changes, and medications that may help maintain bone strength. Understanding what the test measures and why it matters helps you make informed decisions about your bone health.
Practical Takeaway: Bone density tests use harmless X-rays to measure bone strength and predict fracture risk. Medicare covers these tests because research shows they help detect bone loss early, when treatment options are most effective.
Who May Be Covered Under Medicare for Bone Density Testing
Medicare Part B covers bone density tests for people who meet specific criteria. The coverage is available to Medicare beneficiaries, which generally includes people age 65 and older, some younger people with disabilities, and people with end-stage renal disease. However, not every Medicare beneficiary may have coverage for a bone density test at any time—coverage depends on meeting certain conditions that doctors use to identify who is most likely to benefit.
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Women age 65 and older may have coverage for a bone density screening test. For postmenopausal women—women who have gone through menopause—this coverage can apply without additional conditions. Menopause brings significant changes in hormone levels that affect bone strength, making screening particularly relevant during and after this life stage.
Men age 70 and older may have coverage for bone density screening. Men experience bone loss as they age, though typically at a slower rate than women. Starting screening at age 70 reflects the timing when bone loss becomes more pronounced in men and fracture risk increases substantially.
Certain medical conditions and risk factors may allow coverage for people younger than these ages. These include taking corticosteroid medications for conditions like rheumatoid arthritis or chronic obstructive pulmonary disease (COPD), since these drugs can weaken bones. People with a personal history of fractures, certain endocrine conditions like hyperthyroidism, rheumatoid arthritis, and other medical situations may have coverage based on their individual health profile.
The specifics of coverage can vary, and your doctor plays an important role in determining whether a bone density test is medically reasonable for you based on your health history. Medicare requires that the test be ordered by a physician, physician assistant, nurse practitioner, or clinical nurse specialist.
Practical Takeaway: Medicare covers bone density tests for women age 65 and older, men age 70 and older, and younger people with specific medical conditions or medications affecting bone health. Your doctor must order the test for Medicare to pay for it.
How Often Medicare Covers Bone Density Tests
Medicare does not cover bone density screening every year for everyone. Instead, the program pays for testing based on intervals designed to give meaningful information while avoiding unnecessary repeated testing. Understanding these intervals helps you know when to expect coverage and why your doctor might recommend screening at certain times.
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For most Medicare beneficiaries without prior bone loss, coverage typically includes screening once every two years. This means if you have a bone density test in 2024, Medicare may cover another test in 2026. Two-year intervals provide enough time to detect meaningful changes in bone density while avoiding redundant testing that would not provide new clinical information.
If a previous bone density test showed bone loss—a condition called osteopenia or osteoporosis—Medicare may cover more frequent testing. When bone loss is present, monitoring every one to two years can help doctors assess whether current treatment is working or whether adjustments are needed. Annual testing may be covered in cases where significant bone loss has been detected or when someone is taking medication to treat osteoporosis and the doctor needs to monitor treatment response.
If you have not had a prior bone density test and meet the age or condition criteria, Medicare generally covers one baseline screening test. This initial test establishes your bone density at a particular point in time, providing a reference point for any future tests.
Medicare stops covering bone density testing after age 85 unless there is specific medical reason to continue. This policy reflects the reality that treatment decisions for very elderly people often depend on many factors beyond bone density measurements alone, including overall health, life expectancy, and ability to tolerate osteoporosis medications.
Practical Takeaway: Medicare typically covers bone density screening every two years for people without prior bone loss, and may cover more frequent testing if bone loss has been detected. Your doctor determines the appropriate testing interval based on your individual health status.
What Medicare Pays for Bone Density Testing Services
When Medicare covers a bone density test, it pays for specific components of the service. Understanding what is and is not included in coverage helps you know what out-of-pocket costs may apply. Medicare Part B typically covers the technical component of the test—the actual scanning and imaging—along with the professional component, which includes the radiologist's interpretation of the images and written report sent to your doctor.
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The amount Medicare pays depends on where you have the test performed. Hospital outpatient departments, independent imaging centers, and physician offices may bill at different rates. In 2024, Medicare's payment for a basic bone density study of the hip and spine typically ranges from roughly $80 to $120, though this varies by location and facility type. Payment rates are updated annually by Medicare.
If you have Part B coverage and your test is deemed medically reasonable and necessary by Medicare, you generally pay 20 percent of the Medicare-approved amount after you have met your Part B deductible. For example, if Medicare approves $100 for the test and you have met your deductible, you would pay $20 out of pocket. If you have not met your deductible, you pay toward that deductible first.
Some Medicare beneficiaries have supplemental insurance (Medigap) or other coverage that may help pay your portion of the bill. If you are enrolled in a Medicare Advantage plan (Part C), your coverage for bone density tests may differ, and your out-of-pocket costs depend on your specific plan. It is important to check with your Medicare Advantage plan about bone density test coverage before scheduling.
The facility where you have the test may charge for services beyond the standard bone density measurement—for example, additional scans, follow-up imaging, or consultation services. These extras may not be covered by Medicare and could result in additional costs to you. Discussing what is included in the bone density test service before you go can help you understand potential out-of-pocket expenses.
Practical Takeaway: Medicare Part B typically pays for 80 percent of the bone density test cost, leaving you responsible for 20 percent after your deductible is met. Check with your provider about whether any additional services beyond the standard test might involve extra costs.
Finding a Medicare-Participating Provider for Bone Density Testing
To have a bone density test that Medicare covers, you need to use a provider that participates with Medicare. Medicare-participating providers have agreed to accept Medicare's payment as payment in full for covered services and to follow Medicare rules. This protects you from balance billing—being charged extra amounts beyond what Medicare pays and you owe.
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