Aetna Inc. will become the latest health insurer to chop its participation in the Affordable Care Act's public exchanges when it trims its presence to four states for 2017, from 15 this year.
The cuts, announced late Monday, come after UnitedHealth and Humana announced their own exchange pullbacks for 2017 and after several nonprofit insurance co-ops have shut down.
Dwindling exchange participation from insurers is becoming a concern, especially in some rural markets, because competition is supposed to help control insurance price increases, and many carriers have already announced plans to seek price hikes of around 10% or more for 2017. Some states, such Alaska and Oklahoma, will be left with only one participant selling individual coverage in 2017.
Aetna never participated in the Covered California health insurance exchange.
But government officials say the exchanges are improving and healthier people are signing up, which helps insurers balance the claims they get from sicker customers.
"Aetna's decision to alter its Marketplace participation does not change the fundamental fact that the Health Insurance Marketplace will continue to bring quality coverage to millions of Americans next year and every year after that," Kevin Counihan, chief executive of the federal exchange operator HealthCare.gov, said in an emailed statement.
Aetna had said earlier this month that it was canceling expansion plans for its exchange business in 2017, and it promised a hard look at its current participation. The cuts mean it will sell coverage on exchanges in 242 counties next year, down from 778. The Hartford, Conn.-based insurer will sell on exchanges in Delaware, Iowa, Nebraska and Virginia next year.
The company covered about 838,000 people through the individual exchanges at the end of the second quarter.
The exchanges have helped millions of people gain health coverage, most with help from income-based tax credits. But insurers say this relatively small slice of business has generated huge losses since they started paying claims for it in 2014. Insurers have struggled to enroll enough healthy people to balance the claims they pay from high-cost customers, and they have complained about steep shortfalls in support from government programs designed to help them.
The nation's largest insurer, UnitedHealth Group Inc., had expanded rapidly into the public exchanges and sold coverage in 34 states this year. But it also scaled back quickly and only plans to offer policies in three states next year: Nevada, Virginia and New York.
Anthem, which sells coverage on 14 state-based exchanges, surprised analysts last month when it said it was preparing for a loss on that part of the business this year.
Aetna has said it has been swamped with higher than expected costs, particularly from pricey specialty drugs. The nation's third-largest insurer said a second-quarter pre-tax loss of $200 million from its individual insurance coverage helped it decide to limit exposure to the exchanges.
3 p.m.: This article was updated to clarify that Aetna never participated in the Covered California exchange.