Medicare coverage for breast ultrasound depends on why your doctor orders it
Medicare Part B covers ultrasound for dense breasts, but only in specific situations. If your mammogram shows dense breast tissue and your doctor orders an ultrasound as a follow-up diagnostic test, Medicare will typically pay for it. However, Medicare does not cover ultrasound as a routine screening tool for women with dense breasts alone — the ultrasound must be ordered by your doctor for a medical reason, such as evaluating an abnormality found on mammography or investigating symptoms like breast pain or a lump you can feel.
The key difference is between screening (looking for disease when you have no symptoms) and diagnostic imaging (investigating a specific concern). Your state may have its own dense breast notification law that requires your doctor to inform you about your breast density, but that notification does not automatically mean Medicare will cover preventive ultrasound screening.
Key Takeaways
- Medicare Part B covers diagnostic breast ultrasound when your doctor orders it to evaluate an abnormality seen on mammography or to investigate breast symptoms.
- Medicare does not cover ultrasound as a routine screening test for dense breasts without a specific medical reason documented by your doctor.
- You typically pay 20 percent of the Medicare-approved amount for the ultrasound after you meet your Part B deductible.
- Some states require doctors to notify you about dense breast tissue, but this notification does not change Medicare's coverage rules.
- If your doctor believes ultrasound screening is medically necessary, you can ask them to document the reason and submit it with the claim.
When Medicare pays for breast ultrasound
Medicare Part B covers breast ultrasound when a doctor orders it as a diagnostic test — meaning the ultrasound is meant to investigate a specific finding or symptom, not to screen for disease in an asymptomatic person. Common reasons Medicare will cover the ultrasound include: your mammogram showed a mass or area of concern that needs clarification; you have symptoms like breast pain, swelling, or a palpable lump; or your doctor is following up on a previous abnormal finding.
The ultrasound must be ordered by a physician, and the imaging center or hospital must bill it with the correct diagnostic code that matches the medical reason for the test. If the code indicates screening rather than diagnosis, the claim may be denied, and you could be responsible for the full cost.
What Medicare does not cover for dense breasts
Medicare does not cover ultrasound as a preventive or screening test straightforward because you have dense breast tissue. Even if your state law requires your doctor to notify you that your breasts are dense, and even if your doctor recommends screening ultrasound, Medicare will not pay for it unless there is a documented abnormality or symptom to investigate.
This is different from mammography, which Medicare does cover as a screening test once every two years for women age 40 and older (and annually for women 50 and older in some cases). Supplemental screening ultrasound for dense breasts falls outside Medicare's coverage, even though some private insurance plans and some state programs may cover it.
Your out-of-pocket costs for a covered ultrasound
If Medicare covers your breast ultrasound, you will pay 20 percent of the Medicare-approved amount after you meet your Part B deductible for the year. The deductible for 2024 is $240, though this amount changes annually. If you have not yet met your deductible, you will pay the full deductible amount first, then 20 percent of the approved charge.
The actual cost varies depending on where you have the ultrasound performed. Hospital outpatient departments typically charge more than freestanding imaging centers, so the 20 percent you owe will be higher at a hospital. Ask the imaging center for an estimate of the Medicare-approved amount before your appointment so you know what to expect.
State dense breast notification laws and what they mean for coverage
Many states have passed laws requiring doctors to inform patients when mammography shows dense breast tissue. These laws aim to make sure women know that dense breasts can make it harder to spot cancer on a mammogram and that other screening options may be worth discussing. However, these state laws do not change Medicare's coverage rules — they only require notification.
If your doctor tells you that you have dense breasts and recommends screening ultrasound, you can ask your doctor to explain why they believe it is medically necessary for you specifically. If your doctor documents a medical reason — such as a family history of breast cancer, a personal history of breast cancer, or a palpable abnormality — they can submit that documentation with the claim, which may help support coverage.
What to do if your ultrasound claim is denied
If Medicare denies your breast ultrasound claim and you believe it should have been covered, you have the right to appeal. First, review the denial notice carefully to understand the reason — it often states whether the claim was denied because it was considered screening rather than diagnostic, or for another reason.
You can ask your doctor's office to resubmit the claim with additional documentation explaining the medical reason for the ultrasound. If the imaging center billed it with a screening code, ask them to rebill with a diagnostic code that matches your doctor's documented reason. If the appeal is denied again, you can file a formal appeal with Medicare, which involves submitting a written request within 180 days of the denial notice.
Alternatives if Medicare does not cover screening ultrasound
If you have dense breasts and want screening ultrasound but Medicare will not cover it, you have several options. Some imaging centers offer self-pay ultrasound screening at a reduced rate, typically ranging from $150 to $400, though prices vary widely by location. Some hospitals and imaging centers also offer financial information programs for uninsured or underinsured patients.
If you have supplemental insurance (Medigap) or a Medicare Advantage plan, check your plan documents or call your plan to ask whether they cover screening ultrasound for dense breasts — some do, though it is not common. You can also ask your doctor whether they believe there is a documented medical reason that would make the ultrasound diagnostic rather than screening, which would trigger Medicare coverage.
Frequently Asked Questions
Does Medicare cover 3D mammography for dense breasts?
Medicare covers 3D mammography (tomosynthesis) as a screening test under the same rules as standard 2D mammography — once every two years for women 40 and older. The fact that you have dense breasts does not change this coverage. If your doctor orders 3D mammography specifically to evaluate an abnormality, it is covered as a diagnostic test.
Will Medicare cover ultrasound if my doctor says it is medically necessary?
Yes, if your doctor documents a specific medical reason — such as evaluating a mammographic finding, investigating symptoms, or assessing a palpable mass — and submits that documentation with the claim. The key is that the reason must be diagnostic, not preventive screening based solely on breast density.
What if I have a Medicare Advantage plan instead of Original Medicare?
Medicare Advantage plans must cover at least what Original Medicare covers, but they may cover additional services. Contact your plan directly to ask about coverage for screening ultrasound in dense breasts, as policies vary by plan and by year.
Can I get a second opinion if my ultrasound claim is denied?
You can ask another radiologist or imaging center to review your case and provide a written opinion about whether the ultrasound is medically necessary. You can then submit that opinion with an appeal to Medicare. However, Medicare's decision is based on its coverage rules, not on a second medical opinion alone.
Are there programs that help pay for screening ultrasound if Medicare does not cover it?
Some nonprofit organizations, community health centers, and hospital financial information programs offer reduced-cost or free breast imaging for uninsured or low-income women. Contact your local health department or a breast cancer organization in your state to ask about programs in your area.