What Does Donut Hole Mean In Medicare? 
Original Medicare does not have a donut hole , but Part D -LRB- the prescription drug plan -RRB- does have a donut hole . Simply stated , most Part D drug plans have `` front end '' coverage where benefits are provided for formulary drugs and you have a copay . Once you have exhausted your initial coverage there is a donut hole or corridor deductible where you have only a discount on formulary drugs . Once you get through the donut hole copay 's kick in again . 