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GAO Report – Medicare Part B

Medicare Part B: Data on Coupon Discounts Needed to Evaluate Methodology for Setting Drug Payment Rates, GAO-16-643: Published: Jul 27, 2016. Publicly Released: Aug 26, 2016: “In 2015, manufacturers of 29 of the 50 high-expenditure Medicare Part B drugs GAO analyzed offered coupon programs, which reduce the costs patients incur for specific drugs. Part B drugs are typically administered by a physician. Coupon programs are prohibited in the Medicare program but are generally available to privately insured patients. GAO obtained data on coupon discounts for 18 drugs. GAO estimated that 19 percent of privately insured patients who received these drugs used coupons in 2013, but coupon use varied widely depending on the drug—from 1 percent to over 90 percent. Medicare’s methodology for setting Part B payment rates to providers may be less suitable for drugs with coupon programs than for drugs without them. The methodology for most Part B drugs is based on the average sales price (ASP), which is defined by law as the amount physicians and other purchasers pay manufacturers for the drug, net of discounts and rebates to those purchasers. Medicare and its beneficiaries spent $20 billion on Part B drugs paid based on ASP in 2013. As ASP does not account for coupon discounts to patients, the discounts reduce the effective market price that manufacturers receive for drugs with coupon programs. GAO estimated that, for the 18 drugs for which it obtained coupon discount data, the ASP exceeded the effective market price by an estimated 0.7 percent in 2013. Part B spending for these drugs could have been an estimated $69 million lower if ASP equaled the effective market price. ASP exceeded the effective market price by more than 1.0 percent for 5 of the 18 drugs, suggesting that the ASP-based methodology may be even less suitable for these drugs.”

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