In states that do not implement the Medicaid expansion under the Affordable Care Act (ACA), many adults will fall into a “coverage gap” of earning too much to qualify for Medicaid but not enough to qualify for Marketplace premium tax credits. Nationwide, 1.9 million poor uninsured adults are in this situation. This brief presents estimates of the number of people in non-expansion states who could have been reached by Medicaid but instead fall into the coverage gap and discusses the implications of them being left out of ACA coverage expansions.
