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Research Letter
June 21, 2016

Changes in Insurance Coverage Among Hospitalized Nonelderly Adults After Medicaid Expansion in Michigan

Author Affiliations
  • 1Institute for Healthcare Policy and Innovation, University of Michigan, Ann Arbor
  • 2Child Health Evaluation and Research Unit, University of Michigan Health System, Ann Arbor
JAMA. 2016;315(23):2617-2618. doi:10.1001/jama.2016.6303

Expanded insurance coverage through the Affordable Care Act (ACA) may reduce the burden of uncompensated care for hospitals. Recent reports have indicated that rates of uninsurance among hospitalized adults have declined as coverage expanded in 2014.1-4 However, no peer-reviewed publications have assessed statewide trends in coverage with ACA-sponsored expansion and also examined between-hospital differences in coverage trends.

Michigan expanded Medicaid coverage in 2014 under the ACA.5 We compared insurance coverage for hospitalized patients during initial implementation of the Healthy Michigan Plan in April-December 2014 with corresponding months in 2012 and 2013. We also examined patterns at the level of individual hospitals to ascertain whether the consequences of expanded coverage were uniform across institutions.