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This analysis examines the recent growth of Medicare Advantage as a share of hospital inpatient days. Medicare Advantage rose from 13% to 23% of all inpatient days from 2015 to 2022, although there was wide variation among hospitals.

This data note examines trends in hospital margins from 2018 through 2023 and how operating margins varied across different types of hospitals in 2023. It shows the industry overall experienced a rebound in 2023 after margins fell sharply the previous year, though some hospitals – particularly those in rural areas and those who see many Medicaid patients – continue to struggle.

KFF data show that as of April 2025, 14 states plus DC use state-only dollars to provide health coverage to children regardless of immigration status, including 7 states that also do so for at least some adults.

This KFF analysis demonstrates the impact the exclusion of Planned Parenthood from Medicaid and the Title X funding freeze may have on low-income and uninsured individuals who get their family planning care at Planned Parenthood.

This brief focuses on consumers’ understanding of health insurance costs and examines existing federal protections that seek to address barriers to understanding the cost of coverage and care, such as price transparency, self-service price estimator tools, and simplifying cost-sharing designs.

This policy watch provides an update on the latest trends in children’s routine vaccination and exemption rates and discusses how these trends could be impacted by the administration change.

This issue brief examines well-child visit rates overall and for selected characteristics before and after the pandemic began and discusses recent state and federal policy changes that could impact children’s preventive care. More than half of children under age 21 enrolled in Medicaid or CHIP received a well-child visit in 2019, but the share fell to 48% in 2020, the start of the COVID-19 pandemic.

Using a combination of surveys and focus groups, the KFF COVID-19 Vaccine Monitor will track the dynamic nature of public reactions as vaccine development unfolds, including vaccine confidence and hesitancy, trusted messengers and messages, as well as the public’s experiences with vaccination as distribution begins.

This issue brief examines the most recent trends in children’s routine vaccinations, including COVID-19, and explores what to watch as children head back to school this year.

This issue brief explains the legal basis for vaccine mandates by the federal government, states, and private employers; highlights considerations for mandates while the COVID-19 vaccine is under an EUA; and discusses mandate exemptions based on disability or religious objection.