Medicare Effective Dates: How do they work?There are two effective dates for the two types of qualified events. The first is the day you turn 65 years of age. This would be your effective date for Original Medicare part A and part B. The second effective date is for those who suffer from a qualifying disability.

The effective date for your Medicare benefits will be after your 24th month of receiving disability benefits. Once these dates have passed you may use your Medicare benefits and Medicare cards.