Medicare Glossary

Gap Coverage

See Medigap / Medicare Supplement Insurance. Coverage that helps pay the out-of-pocket costs (gaps) not covered by Original Medicare, such as deductibles, coinsurance, and copays.

Also known as: Medigap, Medicare Supplement

Grace Period

A set amount of time after a premium due date, typically extending into the following month or two, during which you can still pay a missed Medicare Advantage, Part D, or Medigap premium before losing coverage.

Grievance

A complaint you make about the quality of care or other non-coverage issues with your Medicare health or drug plan. A grievance is different from an appeal, which is about coverage or payment decisions.