A federal judge in Washington today blocked Aetna Inc.'s proposed $37 billion acquisition of Humana, punctuating an era of antitrust enforcement under the Obama administration that broke up merger deals in a host of industries.

California has withdrawn its request to the federal government for permission to allow undocumented people to obtain health insurance from the state exchange, with a lawmaker linking the decision to concerns about the incoming Trump administration.

Stephanie Blythe isn’t due to give birth until April, but she already ordered a breast pump through her insurance company because she’s worried about the future of the Affordable Care Act.

Just two weeks after President Trump said the pharmaceutical industry is “getting away with murder” on drug prices, the industry's major lobbying group launched its largest-ever ad campaign aimed at rebranding drug companies' image — without even mentioning the topic.

Thousands of Covered California enrollees face higher-than-expected bills from their insurers because the exchange sent incorrect tax credit information to the health plans.

California and other states could keep their federally funded insurance exchange with consumer protections intact under a proposal unveiled Monday by two Republican U.S. Senators.