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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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  • Medicaid Program Integrity and Current Issues

    Issue Brief

    Medicaid is a large source of spending in both state and federal budgets, making program integrity efforts important to prevent waste, fraud, and abuse and ensure appropriate use of taxpayer dollars. This brief explains what program integrity is, recent efforts at the Centers for Medicare and Medicaid Services (CMS) to address program integrity, and current and emerging issues.

  • Why it Matters: Tennessee’s Medicaid Block Grant Waiver Proposal

    Issue Brief

    On November 20, 2019, Tennessee submitted an amendment to its longstanding Section 1115 Waiver that would make major financing and administrative changes to its Medicaid program. The Centers for Medicare and Medicaid Services (CMS) certified the waiver as complete and opened a federal public comment period through December 27, 2019. Most significantly, Tennessee is requesting to receive federal funds in the form of a “modified block grant” and to retain half of any federal “savings” achieved under the block grant demonstration. This brief provides a high-level overview of the proposed waiver changes and context for why these changes matter.

  • Medicaid Enrollment & Spending Growth: FY 2019 & 2020

    Issue Brief

    This brief analyzes Medicaid enrollment and spending trends for FY 2019 and FY 2020 based on interviews and data provided by state Medicaid directors as part of the 19th annual survey of Medicaid directors in all 50 states and the District of Columbia. States reported declines in Medicaid enrollment and modest growth in total Medicaid spending for state fiscal year (FY) 2019 and budgeted for nearly flat enrollment growth but a return to more typical rates of spending growth for FY 2020.

  • A Comprehensive Review of Research Finds That the ACA Medicaid Expansion Has Reduced the Uninsured Rate and Uncompensated Care Costs in Expansion States, While Increasing Affordability and Access to Care and Producing State Budget Savings   

    News Release

      Multiple studies over the last five years find that the Affordable Care Act’s Medicaid expansion has increased health coverage, affordability, and access to care while producing budget savings for states and reductions in uncompensated care costs for hospitals and clinics, according to a KFF review of more than 300 studies and policy reports.

  • Medicaid and Health Coverage for Low-Income Women in Pregnancy and After Childbirth

    Issue Brief

    KFF's Usha Ranji's testimony before the U.S. House Committee on Energy and Commerce, Subcommittee on Health on September 10, 2019 describes describes the role of Medicaid coverage for pregnant and postpartum women, including differences in eligibility between states and efforts to strengthen postpartum care and coverage for women enrolled in Medicaid. 

  • How Will Medicare-for-all Proposals Affect Medicaid?

    Issue Brief

    As the debate over the future direction of our health care system heats up leading into the 2020 Presidential election, several Democratic proposals to create a single, federal, universal health insurance program known as Medicare-for-all have garnered significant attention. These proposals would replace most current public and private health insurance with a new federal program that would guarantee health coverage for all or nearly all U.S. residents. However, many details about how a new public program would be implemented and financed are not yet known. While much attention has focused on the implications of ending private insurance and Medicare, the debate has largely ignored the effects on the low-income and vulnerable populations covered by Medicaid and the broader implications for states of eliminating the Medicaid program.

  • Addressing the Opioid Crisis: Medication-Assisted Treatment at Health Care for the Homeless Programs

    Issue Brief

    Health Care for the Homeless (HCH) programs, a subset of community health centers, play a significant role in addressing the opioid epidemic by providing medication-assisted treatment (MAT). MAT, which combines one of three medications (methadone, buprenorphine, or naltrexone) with behavioral therapies, is the standard of care for opioid use disorder (OUD). This brief presents findings from an analysis of health center data on the provision of buprenorphine-based MAT, as well as interviews with providers and administrators from 12 HCH programs about strategies they adopted to implement MAT programs.

  • Disability and Technical Issues Were Key Barriers to Meeting Arkansas’ Medicaid Work and Reporting Requirements in 2018

    Issue Brief

    This issue brief analyzes the impact of the four measures intended to safeguard coverage for people with disabilities and others who should not have been subject to the work and reporting requirements. It draws on data newly available from Arkansas’ 2018 annual waiver report to CMS and monthly data released by the state while the requirements were in effect. The data reveal that few people used these safeguard measures relative to the number of people who lost coverage due to the new requirements. Among those who accessed the safeguards, the vast majority did so due to disability/other health issues or technical issues such as those related to reporting.