One of the major coverage provisions of the Affordable Care Act (ACA) is the expansion of Medicaid eligibility to nearly all low-income individuals with incomes at or below 138 percent of poverty ($27,821 for a family of three in 2016). This expansion fills in historical gaps in Medicaid eligibility for adults and was envisioned as the vehicle for extending insurance coverage to low-income individuals, with premium tax credits for Marketplace coverage serving as the vehicle for covering people with moderate incomes. While the Medicaid expansion was intended to be national, the June 2012 Supreme Court ruling essentially made it optional for states.
As of September 2016, 19 states had not expanded their programs. Medicaid eligibility for adults in states that did not expand their programs is quite limited: the median income limit for parents in 2016 is just 44% of poverty, or an annual income of $8,870 a year for a family of three, and in nearly all states …
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The Coverage Gap: Uninsured Poor Adults in States that Do Not Expand Medicaid