A B C D E F G H I J L M N O P Q R S T U V W Y

doughnut hole

Also known as “donut hole.” Coverage gap in Medicare Part D prescription drug coverage, as originally enacted, where enrolled beneficiaries paid 100 percent of their prescription drug costs after their total drug spending exceeded an initial coverage limit...

drug tier

Most drug benefit plans classify drugs on a formulary into groups called “tiers” and establish different levels of cost-sharing for each tier. Lower tiers may have a fixed dollar copayment, but higher tiers increasingly use a percentage of drug cost to determine a...

dual eligible

A Medicare beneficiary who also receives either a full range of Medicaid benefits offered in his or her state, or help with Medicare out-of-pocket expenses. (Also see Medicare Savings Programs, Qualified Medicare Beneficiary and Specified Low-Income Medicare...

Dual Eligible Special Needs Plans

Health plans that enroll beneficiaries who are entitled to both Medicare and Medicaid, and offer the opportunity of enhanced benefits by combining those available through both programs.