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5 Facts: Medicaid Fraud, Waste, Abuse and Improper Payments

Program integrity efforts work to prevent and detect fraud, waste, and abuse; increase program transparency and accountability; and recover improper payments. This brief explains what we know about these issues and efforts to address program integrity.

Medicaid: What to Watch in 2026

Medicaid: What to Watch in 2026

In this brief, KFF explores how state fiscal pressures are likely to converge with the implementation of the 2025 reconciliation law to affect Medicaid coverage, financing, and access to care over the next year, especially leading up to the midterm elections.

Medicaid Watch

Featuring policy research, polling and news about how Medicaid is changing, and the impact of those changes due to the tax and spending cuts law

Medicaid and work

Tracking Medicaid Work Requirements:
Data and Policies

To implement Medicaid work requirements, states will need to make important policy and operational decisions, implement needed system upgrades or changes, develop new outreach and education strategies, and hire and train staff, all within a relatively short timeframe. The information tracked here can serve as a resource to understand Medicaid work requirements and state options, gauge readiness, and track implementation of the requirements.

understanding medicaid

Medicaid Financing

Medicaid represents $1 out of every $5 spent on health care in the U.S. and is the major source of financing for states to provide health coverage and long-term care. This brief examines key questions about Medicaid financing and how it works.

Medicaid and Provider Taxes

All states except Alaska cover some state Medicaid costs with taxes on health care providers. This brief uses data from KFF’s 2024-2025 survey of Medicaid directors to describe current practices and the federal rules governing them.

5 Facts: Medicaid and Hospitals

Absorbing reductions in Medicaid spending could be challenging for hospitals, particularly for those that are financially vulnerable. This brief provides data on the reach of Medicaid across hospitals, patients, and charity care.

Medicaid Home Care in 2025

This issue brief provides an overview of what Medicaid home care (also known as “home- and community-based services”) is, who is covered, and what services were available in 2025.

5 Facts: Medicaid Program Integrity

This brief explains what is known about improper payments and fraud and abuse in Medicaid and describes ongoing state and federal actions to address program integrity.

2025 Medicaid Home Care survey

Payment Rates Ahead of 2025 Reconciliation Law

This issue brief describes Medicaid payment rates for home care and other workforce supports that are in place in 2025, before the majority of the 2025 reconciliation law provisions start taking effect.

Home Care Support for Family Caregivers in 2025
number of responding states, including DC, that allow payments for family caregivers by type of home care program and type of caregiver.

This issue brief describes the availability of self-directed services and supports for family caregivers in Medicaid home care in 2025, before most provisions in the reconciliation law take effect.

States’ Management of Home Care Spending

This issue brief describes the mechanisms states are currently using to limit Medicaid spending on home care and their plans for adopting new mechanisms in state fiscal year (FY) 2026.

Waiting Lists for Medicaid Home Care, 2016 to 2025
A Look at Waiting Lists for Medicaid Home- and Community-Based Services from 2016 to 2025

This data note provides new information about waiting lists in Medicaid home care before many of the provisions in the 2025 reconciliation law go into effect.

Eligibility and coverage

  • Eligibility, Enrollment, and Renewal Policies

    KFF's survey findings capture state actions that seek to improve the accuracy and efficiency of Medicaid and CHIP enrollment and renewal processes, as of January 2025.

  • Seniors and People with Disabilities

    More than 1 in 3 people with disabilities (15 million) have Medicaid (35%). In comparison, only 19% of people without disabilities have Medicaid.

  • Children with Special Needs

    Amid debates about proposed cuts to federal Medicaid spending, this brief analyzes key characteristics of children with special health care needs and explores how Medicaid provides them with coverage.

  • People With Intellectual and Developmental Disabilities

    Among the estimated 8 million people with intellectual and developmental disabilities (I/DD), over three million have Medicaid coverage.

  • Adults with Chronic Conditions

    Among working age adults enrolled in Medicaid, approximately three quarters have one or more chronic conditions, and nearly one-third have three or more.

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  • Key Issues in Long-Term Services and Supports Quality

    Issue Brief

    This issue brief discusses four key issues related to long-term services and supports (LTSS) including institutional and home and community-based services (HCBS) quality, highlighting major legislative and policy changes over the last 30 years since the passage of the Nursing Home Reform Act.

  • The Opioid Epidemic and Medicaid’s Role in Facilitating Access to Treatment

    Issue Brief

    This brief describes nonelderly adults with opioid use disorder, including their demographic characteristics and insurance status, and compares utilization of treatment services among those with Medicaid to those with other types of coverage. It also describes Medicaid financing for opioid treatment and the ways in which Medicaid promotes access to treatment for enrollees with OUD.

  • Health Care in Puerto Rico and the U.S. Virgin Islands: A Six-Month Check-Up After the Storms (Report)

    Issue Brief

    Puerto Rico and the U.S. Virgin Islands suffered significant damage to their infrastructure and health care systems from Hurricanes Irma and Maria in September 2017. Drawing on interviews with residents and key stakeholders as well as public reports, this brief provides an overview of the status of the recovery efforts six months after the storms, with a focus on the health care systems.

  • Implications of the ACA Medicaid Expansion: A Look at the Data and Evidence

    Issue Brief

    More than four years after the implementation of the Medicaid expansion included in the Affordable Care Act, debate and controversy around the implications of the expansion continue. Despite a large body of research that shows that the Medicaid expansion results in gains in coverage, improvements in access and financial security, and economic benefits for states and providers, some argue that the Medicaid expansion has broadened the program beyond its original intent diverting spending from the “truly needy”, offers poor quality and limited access to providers, and has increased state costs. New proposals allow states to implement policies never approved before including conditioning Medicaid eligibility on work or community engagement. New complex requirements run counter to the post-ACA movement of Medicaid integration with other health programs and streamlined enrollment processes. This brief examines evidence of the effects of the Medicaid expansion and some changes being implemented through waivers. Many of the findings on the effects of expansion cited in this brief are drawn from the 202 studies included in our comprehensive literature review that includes additional citations on coverage, access, and economic effects of the Medicaid expansion.

  • 33 States and DC Have Adopted Medicaid Expansion, as of May 2018

    Feature

    Source Current status for each state is based on KFF tracking and analysis of state executive activity. Also see the related State Health Facts page “Status of State Action on the Medicaid Expansion Decision” for additional details.

  • Explaining Stewart v. Azar: Implications of the Court’s Decision on Kentucky’s Medicaid Waiver

    Issue Brief

    This issue brief summarizes the DC federal district court's June 29, 2018 decision in Stewart v. Azar, the lawsuit brought by Medicaid enrollees challenging the HHS Secretary’s approval of the Kentucky HEALTH Section 1115 waiver program, which includes a work requirement, premiums, coverage lockouts, and other provisions that the state estimated would lead 95,000 people to lose coverage.