what does plan g cover
Medigap Plan G covers most things not covered under Medicare Parts A & B. You do have to be enrolled in both parts of Medicare to sign up for any Medicare supplement, including Medicare Supplement Plan G. Here is a rundown of what is and is not covered by Medigap Plan G: 1  Plan G pays the 20% that Medicare doesnât cover at the doctor and hospital. 2  Plan G covers the Medicare Part A deductible. 3  The Medigap Plan G also covers the Part B Excess Charges.