he CBO study, released Tuesday morning, analyzed the Restoring Americans' Healthcare Freedom Reconciliation Act -- a bill passed with Republican support and vetoed by President Barack Obama a year ago.
A partial repeal of the Affordable Care Act proposed last year by Congressional Republicans would cost 18 million people their health insurance and lead to at least a 20 percent premium spike for individual plans in the first year after passage, according to a new study by the Congressional Budget Office.
The CBO study, released Tuesday morning, analyzed the Restoring Americans' Healthcare Freedom Reconciliation Act -- a bill passed with Republican support and vetoed by President Barack Obama a year ago.
The bill would have eliminated the ACA's subsidies, insurance mandates and Medicaid expansion, as well as cutting taxes implemented by the ACA, while keeping popular reforms like the ban on denying coverage due to pre-existing conditions.
The study found that 32 million people would lose and that premiums would double over the next 10 years, relative to projections under the ACA.
Congressional Republicans have long promised to "repeal and replace" Obama's signature health care act, and President-elect Donald Trump made opposition to the law a centerpiece of his campaign.
But it is not clear whether plans for repeal will look like the bill analyzed by the CBO.
Last week, Senate Republicans passed a budget blueprint calling for repeal plans to be finalized by Jan. 27, though Republicans leaders have said the date is not set and stone, according to the New York Times.
In an interview last weekend with the Washington Post, Trump said that his plan will guarantee "insurance for everybody." Trump declined to reveal specifics about his plan, but told the Post it was near completion and that he was prepared to roll it out alongside Republican congressional leaders.
The swift push to repeal Obama's health initiative has sparked nationwide protest by Democrats and supporters of the law. At a rally in Boston on Sunday, Sen. Elizabeth Warren branded Republicans "cowards" who wanted to "repeal and run."
The CBO analysis predicts that 10 million people on the individual insurance market would lose coverage, 5 million would lose Medicaid coverage and 3 million would lose employer-based coverage.
Many people would choose not to participate due to the repeal of the insurance mandate, the CBO said. But some insurers would withdraw from the marketplace due to higher costs and lower numbers of enrollees.
"As a consequence, roughly 10 percent of the population would be living in an area that had no insurer participating in the nongroup market," the CBO report said.
Premiums would spike because the end of the individual mandate would lead to a sicker, more expensive population in the insurance market once healthier people drop their insurance, the CBO said.