Medigap, also known as Medicare Supplement Insurance, helps pay for some of the healthcare costs that Original Medicare doesn't cover, such as copayments, coinsurance, and deductibles. It may also cover certain services that Medicare doesn't fully cover, like medical care when you travel outside the U.S. Medigap does not cover long-term care, vision or dental care, hearing aids, eyeglasses, or private-duty nursing. The specific benefits and coverage can vary depending on the type of Medigap plan you choose, so it's important to carefully review the details of each plan before making a decision. Overall, Medigap is designed to provide additional financial protection and peace of mind for individuals enrolled in Original Medicare.