Health insurance is a policy or contract that gives you, the insured person, financial coverage to help pay for health-care needs. Depending on your policy, the insurance company pays for your covered health-care expenses. You pay the insurance company a monthly premium or fee
To be eligible for Medicare Part A and Part B, you must be a U.S. citizen or a permanent legal resident for at least five continuous years. In most cases, you have to be age 65 or older, and in other cases you might be eligible for Medicare before age 65 if you may be eligible by disability. This page will help to explain Medicare eligibility in further detail.