The State Emergency Department Databases (SEDD) contain the universe of emergency department visits in participating States. Restricted access data files are available with a data use agreement and brief online security training.
The data are translated into a uniform format to facilitate multi-State comparisons and analyses. The SEDD consist of data from hospital-based emergency departments and include all patients, regardless of payer, e.g., persons covered by Medicare, Medicaid, private insurance, and the uninsured.
The SEDD contain clinical and resource use information included in a typical discharge abstract, with safeguards to protect the privacy of individual patients, physicians, and facilities (as required by data sources). Data elements include but are not limited to: diagnoses, procedures, admission and discharge status, patient demographics (e.g., gender, age), total charges, length of stay, and expected payment source (e.g., Medicare, Medicaid, private insurance, self-pay; for some States, additional discrete payer categories, such as managed care). In addition to the core set of uniform data elements common to all SEDD, some include State-specific data elements, such as the patient's race. The SEDD exclude data elements that could directly or indirectly identify individuals. For some States, hospital and county identifiers are included that permit linkage to the American Hospital Association Annual Survey File and the Area Resource File.
Data and Resources
Dataset InfoThese fields are compatible with DCAT, an RDF vocabulary designed to facilitate interoperability between data catalogs published on the Web.
009:33 - Agency for Healthcare Research and Quality
Friday, January 1, 1999 - 19:00 to Saturday, December 31, 2016 - 00:00
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HCUP User Support
|Public Access Level|
Agency Program URL
Healthcare Cost and Utilization Project
License Agreement Required
Subject Area 1
Subject Area 2
Health Care Cost
Subject Area 3
Health Care Providers
Unit of Analysis
emergency department visit
Department of Health & Human Services
Project Open Data FieldsThese fields are compatible with Project Open Data, an Open Data policy of the US Federal government.