Skip to content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to content

HCUP Nationwide Emergency Department Database (NEDS) Restricted Access File

Metadata Updated: June 8, 2022

The Healthcare Cost and Utilization Project (HCUP) Nationwide Emergency Department Sample (NEDS) is the largest all-payer emergency department (ED) database in the United States. yielding national estimates of hospital-owned ED visits. Unweighted, it contains data from over 30 million ED visits each year. Weighted, it estimates roughly 145 million ED visits nationally. Developed through a Federal-State-Industry partnership sponsored by the Agency for Healthcare Research and Quality, HCUP data inform decision making at the national, State, and community levels.

Sampled from the HCUP State Inpatient Databases (SID) and State Emergency Department Databases (SEDD), the HCUP NEDS can be used to create national and regional estimates of ED care. The SID contain information on patients initially seen in the ED and subsequently admitted to the same hospital. The SEDD capture information on ED visits that do not result in an admission (i.e., treat-and-release visits and transfers to another hospital). Developed through a Federal-State-Industry partnership sponsored by the Agency for Healthcare Research and Quality, HCUP data inform decision making at the national, State, and community levels.

The NEDS contain information about geographic characteristics, hospital characteristics, patient characteristics, and the nature of visits (e.g., common reasons for ED visits, including injuries). The NEDS contains clinical and resource use information included in a typical discharge abstract, with safeguards to protect the privacy of individual patients, physicians, and hospitals (as required by data sources). It includes ED charge information for over 85% of patients, regardless of expected payer, including but not limited to Medicare, Medicaid, private insurance, self-pay, or those billed as ‘no charge’. The NEDS excludes data elements that could directly or indirectly identify individuals, hospitals, or states.Restricted access data files are available with a data use agreement and brief online security training.

Access & Use Information

Restricted: This dataset can only be accessed or used under certain conditions. License: See this page for license information.

Downloads & Resources

Dates

Metadata Created Date November 10, 2020
Metadata Updated Date June 8, 2022

Metadata Source

Harvested from Healthdata.gov

Additional Metadata

Resource Type Dataset
Metadata Created Date November 10, 2020
Metadata Updated Date June 8, 2022
Publisher Agency for Healthcare Research and Quality, Department of Health & Human Services
Unique Identifier Unknown
Maintainer
Identifier 26887d97-e5da-4b40-893d-0cb9bebf1948
Data First Published 2021-02-13
Data Last Modified 2022-06-07
Rights N/A
Public Access Level restricted public
Bureau Code 009:33
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://healthdata.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Data Dictionary https://www.hcup-us.ahrq.gov/db/nation/neds/nedsdbdocumentation.jsp
Harvest Object Id ebf238aa-66b5-40eb-8fd8-f7f2bf60a7c9
Harvest Source Id 651e43b2-321c-4e4c-b86a-835cfc342cb0
Harvest Source Title Healthdata.gov
Homepage URL https://www.hcup-us.ahrq.gov/db/nation/neds/nedsdbdocumentation.jsp
License https://www.distributor.hcup-us.ahrq.gov/Home.asp
Program Code 009:037
Source Datajson Identifier True
Source Hash f68f0892f088c4f682dcc0e3e41309e23ccfd4c9
Source Schema Version 1.1

Didn't find what you're looking for? Suggest a dataset here.

data.gov

An official website of the General Services Administration.

Looking for U.S. government information and services?
Visit USA.gov