How Is Medigap Different From Medicare? 
Medigap policies are the `` original '' standardized Medicare plans that are offered by insurance companies . They are different plans labeled as A through N that have different co-insurance and/or deductibles depending on which plan you choose . They are different from the Medicare Advantage plans . Medicare Part A and B combined pays 80 percent of doctor and hospital bills therefore there is a 20 percent gap which is why the Medicare policies are called Medigap policies . They are Medicare policies and do not differ from Medicare . 