Insurers are ramping up lobbying to defeat legislation that would limit their payments under one of the 2010 health law's stabilization programs, according to congressional staff and outside experts.

The Obama administration knowingly spent billions in health care dollars without proper congressional authority and went to “great lengths” to impede congressional scrutiny of the money, Republicans on two major House committees said in a report that will be made public on Thursday.

Provider directories for some health plans sold through Covered California and in the private market are so inaccurate that they create an “awful” situation for consumers trying to find doctors, according to the lead author of a new study published in the journal Health Affairs.

A federal appeals court has ruled that consumers must be allowed to buy certain types of health insurance that do not meet the stringent standards of the Affordable Care Act, deciding that the administration had gone beyond the terms of federal law.

A new study from the University of North Carolina-Chapel Hill examining usage of and spending for specialty prescription drugs by commercial insurance plans finds huge spikes from 2003 through 2014. During that stretch, drugmakers launched more and more high-priced drugs, many of them big scientific advances, and raised their prices for existing drugs at least once a year.

The battle between congressional Republicans and the White House over the Affordable Care Act is again escalating—in court and on Capitol Hill.