The GOP's Obamacare overhaul contains $300 billion in deficit savings — but it comes at a huge cost to Medicaid
paul ryan
paul ryan

(House Speaker Paul Ryan.Chip Somodevilla/Getty Images)

The Congressional Budget Office announced Monday that the American Health Care Act, the GOP leadership's plan to repeal and replace the Affordable Care Act, would shrink the federal budget deficit by more than $330 billion over the next decade.

The deficit shrinkage would come, according to the report, from massive spending cuts to Medicaid, the government-run health program that provides insurance primarily to pregnant women, single parents, people with disabilities, and seniors with low incomes.

Roughly $880 billion would be cut from federal Medicaid spending over the next decade under the proposed legislation, according to the CBO report.

The spending cut would primarily be due to the rollback of the expansion of Medicaid established under the Affordable Care Act, better known as Obamacare. Eligibility for Medicaid was expanded under the law to include any adult living under 138% of the federal poverty level — an income of $27,821 for a family of three in 2016. Thirty-two states, including the District of Columbia, have chosen to participate, leading to more than 11 million people nationwide gaining coverage.

The CBO estimated that changes to eligibility under the AHCA would most likely result in a loss of 14 million people from the Medicaid rolls by 2026. And while that would account for a significant portion of the budget savings, the AHCA is hiding a much more "fundamental" change in how Medicaid would operate, said Richard Frank, a professor at Harvard Medical School professor.

"It's no longer an open-ended matching program," Frank told Business Insider. The AHCA "fundamentally changes the kind of contract that exists between the states and the federal government."

Since its establishment in 1965, Medicaid has been an open-ended entitlement program. Anyone who meets the eligibility requirements has a right to enroll, and if costs go up because of new, expensive treatments or increasing healthcare needs, states receive more federal money. While states fund a big portion of their individual Medicaid programs, the federal government matches up to a certain percentage, with bigger matches for poorer states.

The AHCA would change the federal Medicaid funding to a per-capita spending cap, meaning the federal government would send states a fixed amount of money per Medicaid enrollee, regardless of whether that would cover needs or care, starting in 2020. That amount would increase yearly according to the medical-care component of the consumer price index — between 2% and 5%, depending on the year.