As a result of the Medicare Access and CHIP Reauthorization Act of 2015 (MACRA), Medigap plans C and F (including the high-deductible Plan F) are no longer available for purchase by people who become newly-eligible for Medicare on or after January 1, 2020. People who became Medicare-eligible prior to 2020 can keep Plan C or F if they already have it, or apply for those plans at a later date, including for 2023 coverage.