Donut Hole**

A gap in prescription drug coverage under Medicare Part D, where beneficiaries pay 100% of their prescription drug costs after their total drug costs exceed an initial coverage limit until they qualify for a second tier of coverage. Under the standard Part D benefit, Medicare covers 75% of drug costs below the initial coverage limit ($2,830 in 2010), and 95% of spending within the second tier level ($6,440 in 2010). The \donut hole\ specifically refers to the range between these two levels. Health care reform also provides a $250 rebate for all Medicare Part D enrollees who enter the donut hole in 2010, increases discounts in subsequent years and completely closes the donut hole by 2020.