Additionally, people with traditional Medicare can continue to receive COVID-19 PCR and antigen tests with no cost sharing when the test is ordered by a physician or certain other health care providers, such as physician assistants and certain registered nurses, and performed by a laboratory. People enrolled in Medicare Advantage (MA) plans can continue to receive COVID-19 PCR and antigen tests when the test is covered by Medicare, but their cost-sharing may change when the PHE ends. By law, Medicare does not generally cover over-the-counter services and tests. Current access to free over-the-counter COVID-19 tests will end with the end of the PHE. However, some Medicare Advantage plans may continue to provide coverage as a supplemental benefit.