The Effects of Medicaid Expansion under the ACA: Updated Findings from a Literature Review

A substantial body of research has investigated effects of the Medicaid expansion under the Affordable Care Act (ACA) on coverage, access to care, and various economic measures. These findings can inform understanding of the broader effects of the ACA and ongoing debate over ACA repeal, including the Medicaid expansion.

This issue brief summarizes findings from 153 studies of the impact of state Medicaid expansions under the ACA published between January 2014 (when the coverage provisions of the ACA went into effect) and June 2017.¹ It includes peer-reviewed studies as well as freestanding reports, government reports, and white papers published by...