But Biden overstated the average monthly cost that Medicare beneficiaries were paying before the law.

One government estimate for out-of-pocket insulin costs found that people with diabetes enrolled in Medicare or private insurance paid an average of $452 a year — not a month, as Biden said. That’s according to a December 2022 report by the Department of Health and Human Services using 2019 data. Uninsured users, however, paid more than twice as much on average for the drug, or about $996 annually.

About Half of US Insulin Users Are on Medicare

More than 37 million Americans have diabetes, and more than 7 million of them need insulin to control their blood sugar levels and prevent dangerous complications. Of the Americans who take the drug, about 52% are on Medicare.

It’s unlikely that many Medicare enrollees were paying the $400 out-of-pocket monthly average Biden referred to, though it could be on target for some people, especially if they’re uninsured, drug pricing experts told us.

“It would be more accurate to say that it could cost people on Medicare over $400 for a month of insulin, but the average cost would have been quite a bit lower than $400 on Medicare,” said Stacie Dusetzina, a health policy professor at Vanderbilt University School of Medicine.

Medicare Part D, also called the Medicare prescription drug benefit, helps beneficiaries pay for self-administered prescriptions. The benefit has several phases, including a deductible, an initial coverage phase, a coverage gap phase, and catastrophic coverage. What Medicare beneficiaries pay for their prescriptions often depends on which phase they’re in.

“It is confusing, because the amount that a person was supposed to pay jumps around a lot in the Part D benefit,” Dusetzina said. For example, she said, Medicare beneficiaries would be more likely to pay $400 a month for insulin during months when they hadn’t yet met their deductible.

Mariana Socal, an associate scientist at Johns Hopkins Bloomberg School of Public Health, said it’s also difficult to estimate insulin’s precise cost under Medicare because individual prices hinge on other factors, such as how many other prescription medications patients take.

“Because the Medicare program has multiple instances where the patient is required to pay a coinsurance (percentage of the drug’s cost) to get their drug, it is very likely that patients were paying much more than $35 per month, on average, before the cap established by the Inflation Reduction Act went into effect,” Socal wrote in an email.

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