In ten states across the U.S., more than 1.4 million people find themselves in a health coverage dead zone: they earn too little to qualify for subsidies on the Affordable Care Act marketplace, but too much to be eligible for their state's Medicaid program. This so-called "coverage gap" is a direct result of states choosing not to expand Medicaid under the ACA.
The gap was created when the Supreme Court made Medicaid expansion optional for states. In the 40 states that expanded, adults with incomes up to 138% of the federal poverty level qualify for Medicaid. But in the 10 non-expansion states, eligibility often ends at much lower levels—sometimes as low as 18% of the poverty level for parents, and zero for able-bodied adults without children.
Who is affected? Primarily low-income adults who are not pregnant, not disabled, and not elderly. Many work in jobs that don't offer insurance—retail, food service, gig work. A disproportionate number live in the South: Texas, Florida, Georgia, and Mississippi have the highest concentrations of gap residents. Nearly 60% of people in the gap are people of color.
What options exist for those stuck in the middle? Unfortunately, few. They cannot get premium tax credits because the ACA assumes those below 100% of poverty would be covered by Medicaid. In non-expansion states, they often fall into a no-man's land. Some may qualify for limited coverage through their employer, but many simply go uninsured. Community health centers and hospital charity care programs offer some relief, but they are not a substitute for comprehensive insurance.
Recent political efforts have focused on closing the gap. Some states have implemented partial expansions or waivers, but none cover all gap residents. A federal legislative fix has been proposed but has not passed. Advocacy groups urge people in gap states to contact their state representatives and apply for Medicaid annually, even if previously denied, because eligibility rules can change.
The coverage gap remains one of the most persistent flaws in the U.S. health system. While the ACA dramatically reduced the uninsured rate, this remaining hole shows how state-level decisions can leave millions without a viable path to affordable care.