What is OPEN ENROLLMENT PERIOD?
OPEN ENROLLMENT PERIOD meaning A one-time-only six month period when you can buy any Medigap policy you want that is sold in your State. It starts in the first month that you are covered under Medicare Part B and you are age 65 or older. During this period, you can?t be denied coverage or charged more due to past or present health problems.
reference: Centers for Medicare & Medicaid Services