Medicare Supplement

A supplemental insurance policy sold by private insurance companies to fill gaps in the Original Medicare Plan. In Ohio, there are 10 Medicare supplement plans labeled Plan A through Plan N.

Medicare supplement plans are available only to individuals using the Original Medicare Plan, and it is illegal for an insurance carrier to sell a Medicare supplement to an individual who does not have Original Medicare.

Medicare supplements are also referred to as "MedSup" plans, or "Medigap."