SEDD Database Documentation

The State Emergency Department Databases (SEDD) are a set of longitudinal State-specific emergency department (ED) databases included in the HCUP family. The SEDD capture discharge information on all emergency department visits that do not result in an admission. Information on patients seen in the emergency room and then admitted to the hospital is included in the State Inpatient Databases (SID).

The links below provide detailed database documentation for the SEDD, from a high-level Overview to all the detailed specifications, restrictions, and resources necessary for researchers working and publishing with the SEDD.

Description of SEDD Database

SEDD Overview
- HCUP Partners in the SEDD
Introduction to the SEDD (PDF file, 273 KB; HTML)
SEDD File Compositions
- Number of Visits by Year
- Number of Hospitals by Year
SEDD Related Reports

Restrictions on Use

HCUP Data Use Agreement Training
SEDD Data Use Agreement (PDF file, 87 KB; HTML)
Requirements for Publishing with HCUP Data

File Specifications and Load Programs

Data Elements

Additional Resources for Data Elements

HCUP Quality Control Procedures (PDF file, 383 KB; HTML)
HCUP Coding Practices (PDF file, 138 KB; HTML)
HCUP Hospital Identifiers (PDF file, 162 KB; HTML)

ICD-10-CM/PCS Data Included in the SEDD Starting With 2015

2016 State Databases Revised File Structure and New Data Elements (PDF file, 242 KB)
Caution: 2015 SEDD Includes ICD-9-CM and ICD-10-CM/PCS Data
- 2015 State Databases Revised File Structure and New Data Elements (PDF file 105 KB)
Additional ICD-10-CM/PCS Resources
Tutorial for Loading HCUP Software Tools for ICD-10-CM/PCS

Known Data Issues

2016 SID, SASD, SEDD Multiple States - Income Related Variables (PDF file, 87 KB)
Incorrect Mapping of Payer Codes (PDF file, 168 KB)
Hawaii SID & SEDD, 2011-2014 (PDF file, 75 KB)
Georgia SEDD, 2014 (PDF file, 92 KB)
Iowa SEDD, 2013 (PDF file, 92 KB)
Kentucky SEDD, 2010 (PDF file, 22 KB)
Maine SEDD, 2012 (PDF file, 92 KB)
Maryland SID, SASD, SEDD 2008-2017 - Skinny ZIP Code files (PDF file, 87 KB)
- Supporting Documentation for the Maryland SID, SASD, SEDD 2008-2017 Skinny ZIP Code files (ZIP file, 915 KB)
Massachusetts SEDD, 2009 (PDF file, 22 KB)
New Jersey 2015 SID, SASD, SEDD DNR (PDF file, 75 KB)
North Carolina SEDD, 2011-2012 (PDF file, 173 KB)
South Carolina SEDD, 2006-2012 (PDF file, 171 KB)

HCUP Tools: Labels and Formats

Clinical Classifications Software (CCS)
Format Programs
- HCUP Formats Program (TXT file, 64 KB) Creates SAS formats to label the values of selected categorical data elements in HCUP files
- HCUP Diagnosis and Procedure Groups Formats Program (TXT file, 45 KB) Creates SAS formats to label the values of HCUP Diagnosis and Procedure Groups data elements, including Clinical Classifications Software (CCS) data elements
- ICD-9-CM Formats Program (TXT file, 910 KB) Creates SAS formats to label the values of ICD-9-CM Diagnoses and Procedures
- ICD-10-CM Formats Program (TXT file, 10.9 MB) Creates SAS formats to label the values of ICD-10-CM Diagnoses and Procedures

HCUP Supplemental Files

Obtaining HCUP Data

Purchase HCUP data from the HCUP Central Distributor

Internet Citation: SEDD Database Documentation. Healthcare Cost and Utilization Project (HCUP). October 2020. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/state/sedddbdocumentation.jsp.

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Last modified 10/21/20