Medicare coverage for breast ultrasound depends on why your doctor orders it

Medicare Part B covers breast ultrasound when your doctor orders it as a diagnostic tool — meaning to investigate a specific problem or symptom you already have. This includes ultrasounds ordered after an abnormal mammogram, to evaluate a lump you or your doctor felt, or to assess breast pain or nipple discharge. You pay 20% of the Medicare-approved amount after you meet your Part B deductible.

Medicare does not cover screening ultrasound for women without symptoms or findings. Screening ultrasound — done to look for cancer in breasts that feel and look normal — is considered preventive, and Medicare's coverage rules for preventive services are narrower than for diagnostic ones. If your doctor recommends screening ultrasound because you have dense breast tissue or high risk, you would pay the full cost unless your supplemental insurance or Medigap plan covers it.

The distinction between diagnostic and screening matters because it determines whether Medicare pays at all. Your doctor's notes must show why the ultrasound is medically necessary, not just a precaution.

Key Takeaways

  • Medicare Part B covers breast ultrasound when ordered to investigate a symptom, abnormal finding, or result from another test like a mammogram.
  • You pay 20% of the Medicare-approved amount after meeting your Part B deductible, and the provider bills Medicare directly.
  • Screening ultrasound for asymptomatic women — even those with dense breast tissue — is not covered by Original Medicare.
  • Your doctor must document the medical reason for the ultrasound in your chart for Medicare to cover it.
  • Supplemental insurance (Medigap) or Medicare Advantage plans may cover screening ultrasound, so check your plan documents.

When Medicare pays for breast ultrasound

Medicare covers diagnostic breast ultrasound in these situations: after a mammogram shows an abnormality that needs clarification, when a physical exam finds a lump or mass, when you report breast pain or nipple discharge that your doctor wants to evaluate, or when you have a personal or family history of breast cancer and your doctor is monitoring for changes. The ultrasound must be ordered by a physician, nurse practitioner, or physician assistant as part of your medical care.

The ultrasound is typically performed at a hospital outpatient department, imaging center, or doctor's office. Medicare pays the facility and the radiologist or technician who performs and interprets the test. You will receive a bill showing the Medicare-approved amount, what Medicare paid, and what you owe (usually 20% coinsurance).

What you pay out of pocket

Your out-of-pocket cost depends on whether you have met your Part B deductible for the year. Once you reach the deductible (which changes yearly), you pay 20% of the Medicare-approved amount for the ultrasound. If you have not met the deductible, you pay the full deductible first, then 20% of the remaining cost.

The actual bill varies by location and facility. A breast ultrasound at a hospital outpatient center typically costs more than the same test at a private imaging center, because hospital facilities charge higher rates. Medicare's approved amount reflects what it will pay; the facility may bill you differently if it is out of network, though most imaging centers accept Medicare assignment.

If you have a Medigap plan (supplemental insurance), it may cover part or all of your 20% coinsurance. If you have a Medicare Advantage plan, your out-of-pocket costs depend on your specific plan — some cover diagnostic ultrasound with a copay, others with coinsurance. Check your plan documents or call the plan to confirm before the test.

Screening ultrasound and dense breast tissue

If your mammogram report mentions dense breast tissue and your doctor recommends ultrasound screening, Medicare will not cover it under Original Medicare rules. Dense breast tissue is common and does not automatically mean you need screening ultrasound. Some states have laws requiring radiologists to notify you if your breasts are dense, and some recommend supplemental screening, but Medicare does not pay for screening ultrasound based on density alone.

If you want screening ultrasound for dense breasts, you have options. Some Medicare Advantage plans cover supplemental screening; contact your plan to ask. You can also pay out of pocket — costs typically range widely depending on the facility. Some imaging centers offer cash-pay rates lower than the standard charge. Discuss with your doctor whether screening ultrasound is medically necessary for your situation before pursuing it.

How to make sure Medicare will cover your ultrasound

Before your ultrasound appointment, confirm with your doctor's office that the test is being ordered for a diagnostic reason — to investigate a specific finding or symptom. Ask the office staff to verify that Medicare will cover it. You can also call Medicare at 1-800-MEDICARE to ask whether a particular ultrasound order would be covered, though Medicare cannot predict coverage without seeing the full medical record.

When you arrive for the ultrasound, bring your Medicare card. The imaging facility will verify your coverage and may ask you to sign a form acknowledging your financial responsibility if the test is denied. After the test, the radiologist's report goes to your doctor, and the facility bills Medicare. If Medicare denies the claim, the facility must notify you in writing and explain why.

What to do if Medicare denies coverage

If Medicare denies your breast ultrasound claim, you have the right to appeal. The facility or your doctor's office should send you a notice explaining the denial reason. Common reasons include: the ultrasound was deemed screening rather than diagnostic, the medical record did not support medical necessity, or the ordering provider was not may be able to access to order it.

You can request an appeal through Medicare's standard process. The first level is a redetermination, which you request within 180 days of the denial notice. You can ask your doctor to provide additional documentation explaining why the ultrasound was medically necessary. If the redetermination is denied, you can request a reconsideration, then an administrative law judge hearing if needed. The facility or your doctor's office can help you file the appeal, or you can do it yourself by contacting Medicare.

Breast ultrasound versus other imaging options

Breast ultrasound is not the only imaging tool Medicare covers for breast evaluation. Mammography is covered as a screening test once yearly for women 40 and older (or starting at 35 for those at high risk). Diagnostic mammography — ordered to investigate a symptom or abnormal finding — is also covered. MRI of the breast is covered in specific situations, such as evaluating the extent of known cancer or assessing silicone implants, but not for routine screening.

Your doctor chooses the imaging based on what question needs answering. Ultrasound is often used after a mammogram shows a possible abnormality, because it can distinguish between solid masses and fluid-filled cysts without radiation. If your doctor recommends ultrasound, ask why and whether Medicare will cover it. If your doctor recommends a different imaging test, ask whether Medicare covers that test and what your cost will be.

Frequently Asked Questions

Will Medicare cover a breast ultrasound if I have no symptoms?

No, not under Original Medicare. Screening ultrasound for asymptomatic women is not covered. If your doctor recommends it because of dense breast tissue or family history, you would pay out of pocket unless your Medicare Advantage plan covers it. Ask your plan directly.

Do I need a referral from my primary care doctor for a breast ultrasound?

No referral is required. Any licensed physician, nurse practitioner, or physician assistant can order a breast ultrasound. However, your primary care doctor or gynecologist is often the one who orders it after finding something that needs investigation.

What if my doctor orders ultrasound but Medicare says it is screening, not diagnostic?

This can happen if the medical record does not clearly document why the ultrasound is necessary. Ask your doctor to add a note explaining the symptom or finding that prompted the order. You can then request that Medicare reconsider. If the denial stands, you can appeal within 180 days.

Does Medicare Advantage cover breast ultrasound differently than Original Medicare?

Yes. Medicare Advantage plans set their own coverage rules within Medicare guidelines. Some cover diagnostic ultrasound with a copay; others use coinsurance. Some may cover screening ultrasound in certain situations. Check your plan's summary of coverage or call the plan to confirm what is covered before your test.

Can I get a breast ultrasound at any imaging center, or does it have to be Medicare-approved?

The facility must be Medicare-enrolled to bill Medicare. Most hospitals and imaging centers are enrolled. Before scheduling, ask the facility if they accept Medicare assignment. If they do, they bill Medicare directly and you pay only your coinsurance. If they do not, you may owe more out of pocket.