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The Healthcare Cost and Utilization Project (HCUP) includes the largest collection of longitudinal hospital care data in the United States.
- Overview of HCUP
- Online HCUP Overview Course is an interactive course that provides information about HCUP data, software tools, and products
- Frequently Asked Questions
HCUP Products
Learn about HCUP products including State and nationwide databases, software and online tools, and reports.
- HCUP Databases contain information on inpatient stays, emergency department visits, and ambulatory care
- HCUPnet is an online query system that provides immediate access to health statistics
- HCUP Fast Stats is an online query tool that uses visual displays to compare national or State statistics on a range of healthcare topics.
- HCUP Research Tools provide complimentary tools and software to use with HCUP and similar databases
- HCUP Reports feature findings, publications, and technical reports on HCUP issues
HCUP Services
Utilize HCUP services to purchase HCUP data, get answers to your HCUP-related questions, and learn how to use the HCUP databases.
- Purchase HCUP data through the HCUP Central Distributor
- HCUP Technical Assistance answers questions and provides support to HCUP users
- HCUP Online Tutorial Series provides free tutorials on HCUP data and tools, including training on technical methods for conducting research with HCUP data
- HCUP Data Use Agreement Training Tool is a required tutorial for all purchasers and users of HCUP data that defines how the data can be used
Join the HCUP Mailing List
Join the HCUP Mailing List to receive information on new HCUP data, tools, and products.
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What's New
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Resumed Releases of 2021 State Database (11/8/23)
- The HCUP Central Distributor has resumed releases of 2021 state databases. New releases will be reflected on the Available Databases by Year page. Please see the HCUP-US Request Data page for more information on ordering Central Distributor databases.
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HCUP Statistical Brief on Characteristics of 30-Day All-Cause Hospital Readmissions, 2016-2020
(PDF file, 1060 KB;
HTML (09/29/23)
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Changes in 30-day all-cause readmission rates for 2016–2019 and 2020 are presented by expected primary payer, patient location, and race and ethnicity. Readmission rates and average costs for 2020 are provided by the principal diagnosis. The Stat Brief finds that, from 2016 to 2020, the 30-day all-cause readmission rate remained at 13.9 per 100 index admissions, but the number of readmissions decreased by 10 percent in 2020 compared with 2016-2019. See HCUP Stat Brief #304 for additional findings.
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HCUP Fast Stats (09/29/23)
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AHRQ has released new information in HCUP Fast Stats. The Opioid-Related Hospital Use topic has been updated to include new inpatient and emergency department (ED) data. Since the last update, this topic now includes 2021 inpatient data (36 States), 2021 ED data (31 States), and 2022 quarterly inpatient data (15 States).
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HCUP Central Distributor Online Reporting System (08/25/23)
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New on HCUPnet (01/23/23)
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HCUPnet has been updated to include 2020 NRD, 2020 SID, and 2018-2020 Community-Level Statistics data.
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Email Updates