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More Insurers Put Spending Limits On Medical Treatments

The California Public Employees' Retirement System has capped how much it will pay for some common medical procedures and tests.
Max Whittaker
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The California Public Employees' Retirement System has capped how much it will pay for some common medical procedures and tests.

To clamp down on health care costs, a growing number of employers and insurers are putting limits on how much they'll pay for certain medical services such as knee replacements, lab tests and complex imaging.

A recent study found that savings from such moves may be modest, however, and some analysts question whether "reference pricing," as it's called, is good for consumers.

The California Public Employees' Retirement System (CalPERS), which administers the health insurance benefits for 1.4 million state workers, retirees and their families, has one of the more established reference pricing systems.

More than three years ago, CalPERS began using reference pricing for elective knee and hip replacements, two common procedures for which hospital prices varied widely without discernible differences in quality, says Ann Boynton, who helps set benefits policies at CalPERS.

Working with Anthem Blue Cross, the CalPERS set $30,000 as the reference price for those two surgeries in its preferred provider organization plan.

Members who get surgery at one of the 52 hospitals that charge $30,000 or less pay only their plan's regular cost-sharing. If member choose to use an in-network hospital that charges more than the reference price, however, they're on the hook for the entire amount over $30,000, and the extra spending doesn't count toward their annual maximum out-of-pocket limit, Boynton says.

"We're not worried about people not getting the care they need," says Boynton. "They have access to good hospitals; they're just getting it at a reasonable price."

In two years, CalPERS saved nearly $6 million on those two procedures, and members saved $600,000 in lower cost sharing, according to research published last year by James C. Robinson, a professor of health economics at the University of California, Berkeley, and director of the Berkeley Center for Health Technology. Most of the savings came from price reductions at expensive hospitals.

The agency recently set caps on how much it would spend for cataract surgery, colonoscopies and arthroscopic surgery, Boynton says.

Those who have studied reference pricing say it is most appropriate for common, non-emergency procedures or tests that vary widely in price but are generally comparable in quality. Research has generally shown that higher prices for medical services don't mean their quality is higher. Setting a reference price steers consumers to high-quality doctors, hospitals, labs and imaging centers that perform well for the price, proponents say.

Others point out that reference pricing doesn't necessarily save employers a lot of money, however. A study released earlier this month by the National Institute for Health Care Reform examined the 2011 claims data for 528,000 autoworkers and their dependents, both active and retired. It analyzed roughly 350 high-volume and/or high-priced inpatient and ambulatory medical services that reference pricing might reasonably be applied to.

The overall potential savings was 5 percent, the study found.

"It was surprising that even with all that pricing variation, reference pricing doesn't have a more dramatic impact on spending," says Chapin White, a senior policy researcher at RAND and lead author of the study.

Even though the results may be modest, a growing number of very large companies are incorporating reference pricing, according to benefits consultant Mercer's annual employer health insurance survey. The percentage of employers with 10,000 or more employees that used reference pricing grew from 10 percent in 2012 to 15 percent in 2013, the survey found. Thirty percent said they were considering adding reference pricing, the survey found. Among employers with 500 or fewer workers, adoption was flat at 10 percent in 2013, compared with 11 percent in 2012.

This spring, the Obama administration said that large group and self-insured health plans could use reference pricing.

The health law sets limits on how much consumers have to pay out of pocket annually for in-network care before insurance picks up the whole tab — in 2015, it's $6,600 for an individual and $13,200 for a family plan. But if consumers choose providers whose prices are higher than a plan's reference price, those amounts don't count toward the out-of-pocket maximum, the administration guidance said.

Leaving consumers on the hook for amounts over the reference price needlessly drags them into the battle between providers and health plans over prices, says White.

"You expect the health plan to do a few things: negotiate reasonable prices with providers, and not to enter into network contracts with providers who provide bad quality care," White says. "Reference pricing is kind of an admission that health plans have failed on one or both of those fronts."

Copyright 2023 Kaiser Health News. To see more, visit Kaiser Health News.

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Michelle Andrews