The Affordable Care Act Increased Medicaid Coverage Among Former Foster Youth.

Youth aging out of the foster care system in the US are a vulnerable population. When in foster care, youth are eligible for their state's Medicaid program, but they lose eligibility when they age out of foster care. The Affordable Care Act (ACA) has the potential to address some of the health care needs of former foster youth through the Medicaid eligibility expansion to low-income adults and by extending Medicaid eligibility up to age twenty-six for former foster youth. Using the 2011-18 National Youth in Transition Database, we found that Medicaid expansion increased Medicaid coverage among former foster youth by 10.1 percentage points, and the age extension increased coverage by 3.4 percentage points. There is suggestive evidence of positive spillovers for both policies. Our findings imply that the ACA improved Medicaid coverage among former foster youth, with the largest effects from Medicaid expansion. The modest effects of the Medicaid age extension may imply a need to revise enrollment, recertification, outreach, and eligibility determination processes to further increase Medicaid coverage among former foster youth.