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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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  • New OIG Report Examines Prior Authorization Denials in Medicaid MCOs

    Policy Watch

    Congress asked the U.S Department of Health and Human Services (HHS) Office of the Inspector General (OIG) to investigate whether Medicaid MCOs are providing medically necessary health care services to their enrollees. OIG found that Medicaid MCOs had an overall prior authorization denial rate of 12.5%–more than 2 times higher than the Medicare Advantage rate. Prior authorization denial rates ranged widely across and within parent firms and states. After a prior authorization request is denied, Medicaid enrollees can appeal, but it’s not always straightforward and many appeals don’t change the initial decision. Unlike in Medicare Advantage, if a Medicaid MCO upholds its original denial, there is no automatic, independent external medical review. OIG found that state Medicaid agency oversight of prior authorization denials is limited. The OIG report underscores concerns about prior authorization and access in Medicaid managed care, keeping this issue at the forefront of ongoing policy discussions.

  • Do State Decisions to Prioritize Renewals for Medicaid Enrollees Who are Likely Ineligible Affect Early Disenrollment Rates?

    Policy Watch

    Some states are prioritizing Medicaid renewals for enrollees flagged as likely to be ineligible. Early data from Arizona, Idaho, and Pennsylvania show disenrollment rates for flagged enrollees are higher than for other enrollees. This analysis considers why different state approaches to renewals may explain some – but not all – variation in disenrollment rates across the U.S.

  • What is the Centers for Medicare and Medicaid Services’ New AHEAD Model?

    Issue Brief

    In September 2023, the Centers for Medicare and Medicaid Services (CMS) announced a new opportunity for states to leverage federal funding on health care: the Advancing All-Payer Health Equity Approaches and Development (AHEAD) model. With this model, CMS – under the auspices of the CMS Innovation Center, also known as CMMI -- aims to reduce the rate of growth in health care spending, improve people's health, and reduce disparities in health outcomes. This issue brief answers some key questions about the new model and explores considerations for potential state and private participants.

  • More Children are Losing Medicaid Coverage as Child Poverty Grows 

    News Release

    Children’s Medicaid and Children’s Health Insurance Program (CHIP) enrollment declined by 5.5%, or 2.3 million children, from March 2023, before the unwinding began, to September 2023, according to KFF’s latest analysis. Across all 50 states and DC, at least 14,377,000 people were disenrolled from Medicaid between April 1 and January 9, 2024.