Here's a summary of the preventive tests, screenings, vaccinations and exams that Medicare covers at no cost to you. For complete details, reference your plan documents.
Preventive vs. diagnostic tests
Remember, the services listed here are only preventive when you have no symptoms—if your doctor orders a test or screening because you are having symptoms, the test is "diagnostic." That means you may have to pay a share of the cost, depending on your Medicaid status.