How Much Will Medicare Cover if You Need a CT Scan?

Health Compare
Sep 9, 2025

Innovative screening tools can be helpful in diagnosing a wide range of diseases and medical conditions. If you’re injured or your doctor needs to confirm a diagnosis, a computed tomography scan may be recommended. If an MRI, CT scan, or other diagnostic test is ordered by your doctor, and you undergo exams within a Medicare-approved facility, you may get help paying for those services. 

What is a CT Scan?

If you have ever had an injury or been diagnosed with a disease, you may be familiar with computerized tomography, commonly known as a CT scan. The same test is sometimes referred to as a CAT scan (computed axial tomography). 

CT scans capture cross-sectional images of blood vessels, bones and soft tissues from different angles. An analysis of these images provides insight into bone fractures, blood clots and abnormalities indicative of diseases like cancers and heart conditions. 

The technology gives doctors a vantage point from which to confirm a diagnosis, formulate a treatment plan, monitor an ongoing condition, or recommend further testing.  

Why Do I Need a CT Scan?

According to the Cleveland Clinic, you may need a CT scan if your doctor has reason to suspect a:

• Specific cancer or benign growth
• Fracture or broken bone
• Heart condition
• Blood clot
• Bowel function issues like a blockage or Crohn’s disease
• Brain and spinal cord problems
• Internal bleeding

CT scans can range from hundreds to thousands of dollars depending on a range of factors, including where the test is performed (inpatient or outpatient facility), region of the country, type of scan and insurance coverage. If you are a Medicare recipient, you are probably asking, “Does Medicare pay for CT scans?”

How Does Medicare Cover CT Scans?

Medicare helps with the cost of medically necessary CT scans and other diagnostic tools that your doctor orders to diagnose, treat or monitor a disease or injury. Part B generally covers medically necessary CT scans ordered by a healthcare provider and performed in an outpatient setting, including during hospital observation. Part A may cover a CT scan when it is part of a Medicare-covered inpatient hospital stay after a formal admission order, or a qualifying skilled nursing facility stay. Confirm coverage and cost sharing with Medicare.gov or your plan before the scan.

TIP: Use our Plan Finder to search your area for Medicare Plans with benefits and coverage that best fits your needs. 

Does Medicare Part B Cover CT Scans?

Part B covers specific diagnostic tests, including CT scans. Your share of the cost is the Part B deductible and the 20% coinsurance payment. If your doctor sends you to the outpatient department of a hospital for the test, the outpatient facility may also charge you a copayment.

TIP: Try the Health Compare Plan Finder to find and compare plans available in your area.

Does Medicare Cover Preventive Tests?

Medicare covers certain preventive services, such as qualifying low-dose CT lung cancer screening, with no cost sharing when coverage requirements are met and your provider accepts assignment. Diagnostic CT scans are generally subject to Part B cost sharing. For details, see Medicare.gov or contact your plan.

Here are examples of Medicare-covered preventive tests:

Bone density test

If you are at risk of broken bones, Medicare covers one bone density test every two years as a preventive measure. One of the following conditions must apply. You may be eligible if you:

• Are a woman with estrogen deficiency and are at risk of osteoporosis
• Potentially have low bone density or vertebral fractures as shown on X-rays
• Take or plan to take prednisone or a type of steroid
• Have primary hyperparathyroidism
• Need monitoring for effects of osteoporosis drugs

EKG

In addition to covering EKG as a diagnostic test, Medicare covers a one-time EKG screening if your healthcare provider arranges this as part of your “Welcome to Medicare” preventive visit. You are responsible for the Part B deductible and coinsurance.

CT scans for lung cancer screening

You may be eligible for an annual preventive CT scan as part of lung cancer screening if all the following apply.

You must:

• Fall within the age group of 50 to 77
• Be asymptomatic of lung cancer
• Either currently smoke or have quit smoking within the last 15 years
• Have a history of smoking an average of one pack (20 cigarettes) per day for a minimum of 20 years
• Have a doctor’s written order to get the screening

If all of the above is applicable, the screening will be provided at no cost to you, assuming your healthcare provider accepts assignment. 

Are CT Scans Covered by Medicare Advantage or Medigap?

Medicare Advantage (MA) is a Medicare-approved plan offered by private insurance companies. MA plans must cover Medicare-covered Part A and Part B services, with limited exceptions, but may use provider networks and prior authorization and charge different cost sharing than Original Medicare. Many also offer additional coverage such as drug, vision, dental and/or fitness benefits. Before the scan, check your plan’s Evidence of Coverage or contact your plan to confirm network, authorization requirements and costs.

Medigap (Medicare Supplement) plans help cover some of the costs that Original Medicare does not. Depending on the Medigap plan you purchase, it might pay the Part A coinsurance if you are hospitalized. If you are an outpatient, Medigap may cover your Part B coinsurance and copayments. Medigap benefits and availability vary by plan, state and the date you became eligible for Medicare. In most states, standardized plans other than Plan A cover some or all of the Part A deductible, depending on the plan. Plans C and F are not available if you became eligible on or after January 1, 2020. Massachusetts, Minnesota and Wisconsin standardize Medigap differently. See the policy’s benefit chart or Medicare.gov for details.

Keep in mind that you cannot have a Medigap plan if you are enrolled in Medicare Advantage (Medicare Part C). 

How Much Will You Pay for a CT Scan?

What you pay for a CT scan will depend on a number of factors, including the reason for your scan, what medical providers you visit, where you live, and what plan you’ve enrolled in.  Talk to your physician to discuss any questions you may have and reach out to your plan directly for more details. 

TIP: Discover more great Medicare-related and senior healthy living content on the Medicare Benefits blog.

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