Medicare covers screening colonoscopies once every 24 months if you’re at high risk for colorectal cancer. If you aren’t at high risk, Medicare covers the test once every 120 months, or 48 months after a previous flexible sigmoidoscopy. There’s no minimum age requirement.
If your doctor or other qualified health care provider accepts assignment , you pay nothing for this test. However, if your doctor finds and removes a polyp or other tissue during the colonoscopy, you pay 15% of the Medicare-Approved Amount for your doctors' services. In a hospital outpatient setting, you also pay the hospital a 15% coinsurance . The Part B deductible doesn't apply.