The 10 highest-expenditure drugs accounted for almost half of all Medicare Part B drug spending in 2010, according to testimony by the Government Accountability Office (GAO) (http://tinyurl.com/mju652s). Furthermore, the 55 highest-expenditure drugs represented 85% of the $16.9 billion spent by Medicare in the Part B program. The GAO submitted its report during a June 28 hearing of the House Subcommittee on Health, which is considering reforms to improve the Medicare Part B drug program.
Mitka M. High-Cost Drugs Account for Most of Medicare Part B Spending. JAMA. 2013;310(6):572. doi:10.1001/jama.2013.192555