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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Clin Ther. 2012 Mar 13;34(4):904–914. doi: 10.1016/j.clinthera.2012.02.012

Table II.

Medicare Part D beneficiary annual coinsurance rates for branded and generic drugs during the Coverage Gap Discount Program.

Drug Coinsurance Rate, %
Year Branded Generic
2011 50 93
2012 50 86
2013 47.5 79
2014 45 65
2015 45 65
2016 45 58
2017 40 51
2018 35 44
2019 30 37
2020 25 25

Adapted from reference 37.