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The Healthcare Cost and Utilization Project (HCUP, pronounced "H-cup") is a family of health care databases and related software tools and products developed through a Federal-State-Industry partnership and sponsored by the Agency for Healthcare Research and Quality. HCUP is based on statewide data collected by individual data organizations across the United States and provided to AHRQ through the HCUP partnership. HCUP would not be possible without statewide data collection projects. HCUP includes the largest collection of longitudinal hospital care data in the United States, encompassing all-payer, discharge-level information.

Available data includes the following:

  • National Inpatient Sample (NIS)
  • State Inpatient Databases (SID)
  • Kids' Inpatient Database (KID)
  • State Ambulatory Surgery and Services Database (SASD)
  • Nationwide Emergency Department Sample (NEDS)
  • State Emergency Department Databases (SEDD)

HCUP data are used for research on hospital utilization, access, charges, quality and outcomes. The data are used to describe patterns of care for uncommon as well as common diseases, to analyze hospital procedures, including those that are performed infrequently, and to study the care of population sub-groups such as minorities, children, women, and the uninsured. Researchers and policymakers use HCUP data to identify, track, analyze and compare hospital statistics at the national, regional and State levels.