Medicare’s current estimates are based on Epogen usage in 2007 for dialysis treatments. But since then, use of the drug has fallen 25 percent or more, partly because of Food and Drug Administration warnings about its perils and partly because Congress removed the financial incentives for clinics and hospitals to prescribe the drug. Because Medicare continues to reimburse health-care providers as if the dosing levels haven’t changed, the significant savings in doses has not translated into savings for the U.S. Treasury.
The amount of the overspending is more than $400 million annually, according to calculations done separately by The Washington Post and experts.
“I think we probably left money on the table,” said Rep. Pete Stark (D-Calif.), a critic of the way the drug had been used who helped shepherd through legislation that removed the financial incentives for bigger doses beginning in 2011.
Incentives for providers
The overpayment for Epogen reflects both the promise and difficulty of large-scale government reform of health-care spending.
For years, Epogen was one of a trio of anemia drugs — all manufactured by Amgen, a California biotech firm — that cost Medicare as much as $3 billion annually. Overall U.S. sales of the drugs exceeded $8 billion.
Nearly two decades after the drugs were first approved in 1989, their purported benefits were found to be overstated, and the FDA issued a series of stern warnings about their potentially deadly side effects, such as cancer and heart attacks.
At least some of their popularity stemmed from the fact that hospitals and clinics made lots of money using them: The spread between what they paid for a dose and what Medicare paid them to administer one reached as high as 30 percent, according to the Medicare Payment Advisory Commission.
The incentives drove up usage. By 2007, about 80 percent of dialysis patients were getting the drugs at levels beyond what the FDA now targets as safe.
Congress pushed Medicare to revise its payment system to remove the incentives for larger doses. Under the new system for dialysis patients, Medicare pays a set fee for a bundle of dialysis services and drugs.
With the change, hospitals and clinics make more money if they use the drugs more frugally. To guard against providers using too little, Medicare makes quality checks measuring patient condition.
Sales of Epogen have fallen more than 20 percent since the imposition of the new payment system, according to Amgen reports, and on a per-patient basis have fallen more than 25 percent. (The sales of the other related anemia drugs, Aranesp and Procrit, have fallen about 65 percent since their peak levels.)
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