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State Health Policy and Data

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Tracking Insurer Exits and Entries in the ACA Marketplaces. U.S. map shows that as of June 8, 2026, six carriers across 18 states have announced that they will exit the ACA Marketplaces partially or fully for plan year 2027.

Tracking Insurer Participation Changes in the ACA Marketplaces in 2027

As of June 8, six health insurers have announced that they will exit ACA Marketplaces in 18 states next year, potentially leaving hundreds of thousands of ACA enrollees with fewer insurance options. KFF’s new tool tracks changes in ACA insurer participation, including the recently announced exits by Cigna Health, CareSource, PacificSource, Providence Health, Scott and White, and Taro Health.

State by State Data

More than 800 up-to-date, state-level health indicators can be mapped, ranked, and downloaded.

Explore the latest national and state-specific data and policies on women’s health, including health status, insurance coverage, use of preventive services, and more.

Most "dual-eligible" individuals (8.9 million in 2024) are eligible for Medicaid benefits that are not otherwise covered by Medicare, including long-term care.

Use this tool to build a custom report compiling health-related data for a single state or multiple states.

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  • Medicaid Emergency Authority Tracker: Approved State Actions to Address COVID-19

    Issue Brief

    States used a number of Medicaid emergency authorities to address the COVID-19 public health emergency. Between March 2020 and July 2021 we tracked details on Medicaid Disaster Relief State Plan Amendments (SPAs), other Medicaid and CHIP SPAs, and other state-reported administrative actions; Section 1115 Waivers; Section 1135 Waivers; and 1915 (c) Waiver Appendix K strategies. This resource was last updated July 1, 2021 and is no longer being updated.

  • New Analysis Summarizes Recent Research on the Effects of ACA Medicaid Expansion, Providing Context for Renewed Expansion Debates in States

    News Release

    New federal financial incentives for Medicaid expansion and the increased reliance on Medicaid as a coverage safety net during the pandemic have renewed debate in the 12 states that have not adopted the Medicaid expansion under the Affordable Care Act. A new KFF literature review provides context for these expansion debates by summarizing evidence from nearly 200 studies about the effects of Medicaid expansion that were published between February 2020 and March 2021. These studies…

  • Which States are Hitting the COVID-19 Vaccine Tipping Point?

    News Release

    As of April 19, COVID-19 vaccine eligibility opened up to adults in all states, leaving many to wonder when supply will surpass vaccine demand. A recent brief examined when COVID-19 vaccine supply might outstrip demand in the U.S. nationally, estimating that the U.S. will reach this point within a few weeks. A new brief examines the state by state differences in cumulative vaccine coverage and daily uptake to better understand how the share of the…

  • Supply vs Demand: Which States are Reaching their COVID-19 Vaccine Tipping Points?

    Policy Watch

    This analysis examines overall COVID-19 vaccination levels and how the rate of vaccinations over the last week has changed at state-level and national level. There is significant variability by state in how many adults in the US have been vaccinated with at least one dose. Most states are also seeing a decline in the pace of vaccinations, indicating that they may be approaching the point when vaccine supply exceeds demand.

  • Potential Implications of Policy Changes in Medicaid Drug Purchasing

    Issue Brief

    This brief examines how leading federal and state policy options related to changes in Medicaid Drug Rebate Program (MDRP), drug pricing, and payment and management of the Medicaid prescription drug would affect state and federal governments as well as private industry (including drug manufacturers, managed care organizations, and pharmacies).

  • Analysis Estimates 5.1 Million People Fall into the Affordable Care Act’s “Family Glitch”

    News Release

    A new KFF analysis estimates 5.1 million people nationally fall into the Affordable Care Act’s “family glitch” that occurs when a worker receives an offer of affordable employer coverage for themselves but not for their dependents, making them ineligible for financial assistance for marketplace coverage. The so-called glitch occurs because the ACA prohibits people with an offer of affordable employer coverage from purchasing subsidized coverage through the ACA marketplace. Under current rules, the affordability of…

  • The ACA Family Glitch and Affordability of Employer Coverage

    Issue Brief

    This analysis estimates that 5.1 million people fall into the Affordable Care Act's "family glitch," which occurs when a worker receives an offer of affordable employer coverage for themselves but not for their dependents, making them ineligible for financial assistance for marketplace coverage. It explores the demographic characteristics of this group, including state-level estimates.