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Note: The data presented below are updated monthly as new Medicaid/CHIP enrollment data become available.
This tracker presents the most recent data on monthly Medicaid and Children’s Health Insurance Program (CHIP) enrollment reported by the Centers for Medicare & Medicaid Services (CMS) as part of the Performance Indicator Project. It includes data for Medicaid and CHIP and reports enrollment data for children and adults. The data are generally the most recent data available and are useful for reporting trends in Medicaid enrollment. However, the data only capture full-benefit enrollees, excluding those who receive limited benefits, such as those who receive family planning services only, and consequently, do not provide a full count of the total population enrolled in Medicaid. Additionally, these data cannot be used to monitor changes in enrollment by eligibility pathway, including for adults in the Medicaid expansion group. Enrollment data for the full Medicaid population is available here, and for more information on how implementation of Medicaid work requirements is affecting Medicaid expansion enrollment, please see Tracking Implementation of the 2025 Reconciliation Law Medicaid Work Requirements.
Following implementation of the Affordable Care Act’s (ACA) Medicaid expansion in January 2014, Medicaid enrollment increased as adults with income up to 138% of the federal poverty level (FPL) gained coverage. As more states adopted the expansion, Medicaid enrollment peaked at just over 75 million in March 2017 before declining steadily until the start of the COVID-19 pandemic in March 2020. By February 2020, enrollment had dropped to 71 million.
At the start of the pandemic, Congress enacted legislation that included a provision that Medicaid programs keep people continuously enrolled in exchange for enhanced federal funding. As a result, national Medicaid/CHIP enrollment increased to a record high of 94 million enrollees in March 2023 when the continuous enrollment provision ended. The unwinding of this provision started on April 1, 2023, and millions were disenrolled from Medicaid over the subsequent 16 months. By September 2024, national Medicaid/CHIP enrollment had dropped to 80 million. Medicaid enrollment stabilized briefly at the end of 2024 but began declining again in March 2025.
Passage of the 2025 reconciliation bill in July 2025 included significant changes to Medicaid that are expected to reduce Medicaid enrollment over the next 10 years relative to what would have been expected under current law. For the first time, the law conditions Medicaid eligibility for Medicaid expansion enrollees on meeting work and reporting requirements. These work requirements, which will go into effect in January 2027, or sooner at state option, represent the largest source of enrollment declines in the law. The bill also restricts eligibility for certain immigrant populations starting in October 2026, which is also expected to affect Medicaid enrollment.
The figures below show Medicaid and CHIP enrollment from February 2020 through the most current month of available data. Figures include enrollment for adults and children in Medicaid/CHIP and for Medicaid only and CHIP only. Key enrollment data and trends as of March 2026 include:
Note: The data on unwinding renewal outcomes presented below were last updated on September 12, 2024; since most states have now completed the Medicaid unwinding, the information will not be updated again.
As of September 12, 2024 and with nearly complete unwinding data for most states:
The data on unwinding-related renewal outcomes presented in this section rely primarily on monthly reports that states were required to submit to the Centers for Medicare & Medicaid Services (CMS) during the unwinding period. The data also reflect updates to the monthly reports that states submit three months after the original report submission to account for the resolution of pending cases and any other changes in renewal metrics. For 13 states, data were pulled from dashboards or reports published on state websites that provide more complete information, and for a few additional states, updated monthly reports were pulled from state websites because they were more timely than what is reported on the CMS website.
To view archived data for specific states, click on the State Data – Archived tab.
(Note: The first tab in the figure below calculates procedural disenrollment rates using total disenrollments as the denominator. The second tab shows these rates using total completed renewals, which include people whose coverage was terminated as well as those whose coverage was renewed, as the denominator. And finally, the third tab calculates the rates as a share of all renewals due, which include completed renewals and pending cases.)
The data presented here are cumulative unwinding metrics published by CMS. These counts and percentages may differ from the above data, which present renewal metrics reported on state websites when state-reported data are more complete.
Figure 1 below shows cumulative renewal data reported by CMS during states’ unwinding periods. Renewal data for the months after the end of states’ unwinding period are excluded. The data reflect updated unwinding data reported by states three months after the original monthly reports as they become available.
For questions about this tracker, please contact KFFTracker@kff.org
Note: The state data presented below were last updated on September 12, 2024; since most states have now completed the Medicaid unwinding, the information will not be updated again.
The data presented here provide state-level data on enrollment trends and renewal outcomes during the unwinding period. Figure 1 shows total Medicaid enrollment by month starting in January 2023 and, once disenrollments resumed in a state, the cumulative percent change in Medicaid enrollment relative to the month before Medicaid disenrollments started (this baseline month will differ across states). Figure 2 shows renewal metrics for each month of a state’s unwinding period (or cumulative data for the unwinding period for some states).
For total national Medicaid enrollment, click on the Enrollment Data tab.
Medicaid Watch features the latest policy research, polling, and news about how Medicaid is changing, and the impact of those changes due to the tax and spending cuts law.
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