CMS's Implementation of a 2014 Policy Change Resulted in Improvements in the Reporting of Coverage Gap Discounts Under Medicare Part D

The Coverage Gap Discount Program (CGDP) made manufacturer discounts equal to 50 percent of the negotiated price of applicable, covered Part D drugs available to Medicare Part D beneficiaries during calendar years (CYs) 2011 through 2018. During CYs 2013 and 2014, Coverage Gap discounts totaled more than $4.5 billion and $4.7 billion, respectively.