Medicare's coverage of calcium score tests depends on your specific situation and the reason your doctor orders it
A calcium score test (also called a coronary calcium scan) is a CT scan that measures calcium buildup in your heart arteries. It helps doctors assess your risk of heart disease. Medicare Part B covers this test, but only under certain conditions — and those conditions have changed in recent years.
The key question is whether your doctor is ordering it as a screening test (to check for heart disease when you have no symptoms) or as a diagnostic test (to evaluate chest pain or other heart symptoms you already have). Medicare's coverage rules treat these differently.
Key Takeaways
- Medicare Part B covers calcium score tests ordered to evaluate existing chest pain or heart symptoms, with you paying 20 percent of the cost after your deductible.
- Medicare does not cover calcium score tests used only for screening in people without symptoms, even if you are at high risk for heart disease.
- Your doctor must order the test for a medical reason documented in your health record, not straightforward as a preventive measure.
- Some Medicare Advantage plans may cover screening calcium score tests, so check your plan's specific coverage rules.
When Medicare Part B pays for the calcium score test
Medicare Part B covers the calcium score test when your doctor orders it to evaluate symptoms or signs of heart disease you already have. This means chest pain, shortness of breath, or other symptoms that suggest a possible heart problem. The test is covered as a diagnostic tool — something used to figure out what is causing your symptoms.
If the test is covered, you pay 20 percent of the Medicare-approved amount after you have met your Part B deductible for the year. The provider bills Medicare directly, and Medicare pays 80 percent. The exact dollar amount you owe depends on what the test costs in your area and whether the facility is in-network with Medicare.
Your doctor's order must document a medical reason for the test. The reason needs to be in your medical record before the scan is done. A note saying "patient has chest pain" or "evaluate for coronary artery disease" is the kind of documentation Medicare reviewers look for.
When Medicare Part B does not cover the calcium score test
Medicare Part B does not cover calcium score tests ordered for screening purposes — meaning tests done to check for heart disease in people who have no symptoms. This is true even if you have risk factors like high blood pressure, high cholesterol, diabetes, or a family history of heart disease. Even if your doctor thinks screening would be a good idea, Medicare does not pay for it.
This rule applies to the standard Medicare program (Original Medicare). The reasoning is that large studies have not yet shown that screening calcium score tests in asymptomatic people change health outcomes enough to justify the cost to Medicare. The test may give useful information, but Medicare's coverage rules do not include it as a preventive benefit.
If your doctor orders a calcium score test for screening and you receive it, you will be responsible for the full bill unless another payer (like a supplemental insurance plan) covers it.
Medicare Advantage plans and calcium score coverage
Medicare Advantage plans (Part C) set their own coverage rules within Medicare guidelines. Some Advantage plans do cover calcium score tests for screening, while others follow the same rules as Original Medicare and do not. Coverage varies by plan and by year, because plans can change their benefits annually.
If you have a Medicare Advantage plan, call the plan directly or check your plan documents to ask whether calcium score screening is covered. The plan's customer service number is on your insurance card. Ask specifically whether the test is covered for screening (no symptoms) or only for diagnostic purposes (with symptoms).
What to do before you get a calcium score test
Before scheduling a calcium score test, ask your doctor whether Medicare will cover it in your situation. Your doctor's office can often check coverage by calling Medicare or submitting a coverage question to your plan ahead of time. This is called a coverage information, and it protects you from unexpected bills.
If your doctor is ordering the test because you have symptoms, coverage is likely. If the test is being ordered for screening only, ask your doctor whether there are other ways to assess your heart risk that Medicare does cover — such as a stress test or an EKG — or whether the screening test is worth paying for out of pocket.
If you receive a bill after the test that you believe Medicare should have covered, you have the right to appeal. Keep all paperwork from the test and your doctor's order, and contact Medicare at 1-800-MEDICARE to ask about the denial.
The difference between calcium score and other heart tests
A calcium score test is different from other heart imaging that Medicare covers more routinely. An EKG (electrocardiogram) is covered for screening in certain situations. A stress test is covered when ordered to evaluate symptoms. An echocardiogram is covered when there is a medical reason to look at heart structure or function.
The calcium score test is more specialized — it specifically measures calcium in the coronary arteries, which is one way to estimate heart disease risk. Because it is newer and because its role in screening is still being studied, Medicare's coverage is narrower than for older tests.
Recent changes to calcium score coverage
Medicare's coverage rules for calcium score tests have shifted over time as medical evidence has developed. In the past, Medicare covered some screening calcium score tests under certain circumstances. Current rules are more restrictive, covering the test mainly when there is a documented medical reason (symptoms or signs of heart disease).
Coverage rules can change, so if you are told the test is not covered, it is worth asking your doctor to check the current Medicare policy. Your doctor's office has access to Medicare's coverage decisions and can look up the most recent guidance.
Frequently Asked Questions
Will Medicare cover a calcium score test if I have high cholesterol and high blood pressure?
No, not for screening. Medicare covers the test only if you have symptoms or signs of heart disease — like chest pain or shortness of breath — that your doctor is trying to evaluate. Having risk factors alone is not enough. If you want screening and your doctor recommends it, you would pay the full cost yourself.
What if my doctor says the calcium score test is medically necessary?
If your doctor documents a medical reason in your chart — such as evaluating chest pain or abnormal EKG findings — Medicare Part B will likely cover it. The word "necessary" matters less than the documented reason for the test. Make sure your doctor's order includes the specific symptom or finding that prompted the test.
Can I appeal if Medicare denies coverage for my calcium score test?
Yes. If you receive a denial notice, you have the right to appeal. Contact Medicare at 1-800-MEDICARE and ask about the appeal process. Bring your doctor's order, your medical records showing why the test was ordered, and the denial letter. Your doctor can also help by providing additional documentation of the medical reason for the test.
Does my Medicare Advantage plan cover calcium score screening?
It depends on your specific plan. Call your plan's customer service number (on your insurance card) and ask directly. Plans can cover screening even when Original Medicare does not, and coverage can change year to year. Get the answer in writing if possible.
What should I do if I cannot afford the calcium score test?
Talk to your doctor about other ways to assess your heart risk that Medicare covers — such as a stress test or consultation with a cardiologist. Some hospitals and imaging centers offer financial information or payment plans for uninsured or out-of-pocket costs. Ask the facility's billing department what options are available.