Big premium increases that Minnesota insurers proposed last week reflect losses they've been taking in a part of the market targeted by the federal health law.
Insurers say they collectively lost more than $300 million on policies for individuals who buy coverage on their own last year because subscribers had more costly health problems than expected.
Higher rates on that coverage would help close the gap, though the size of the increases will attract attention amid scrutiny of the effects of the Affordable Care Act. If regulators were to approve the full amounts, average premiums would increase by more than 50 percent for about 179,000 people, and by more than 10 percent for another 60,000.
Insurers say they are making adjustments now that they have more experience under the health care law, which will cover a chunk of first-year losses.
"This just shows the volatility that we're experiencing in the first few years of the Affordable Care Act," said Lynn Blewett, a health policy expert at the University of Minnesota. "Eventually, it will work itself out into a more stable market."
Observers say the proposed increases are driven largely by factors that are unique to the individual market, and don't point to similar jumps for employer groups and government programs that cover roughly 90 percent of Minnesotans.
But the individual market, which includes the state's MNsure exchange, grew by about 53 percent last year to about 292,138 people, according to the Minnesota Council of Health Plans. Low rates that some people initially found on MNsure have already started to go away.
Golden Valley-based PreferredOne made a big splash in 2014 during the first year of the exchange, but had to pull out of MNsure for 2015 after low rates proved unsustainable. The company increased premiums by an average of 63 percent for 2015, prompting thousands of subscribers to take their business elsewhere.