KID Database Documentation

The Kids' Inpatient Database (KID) is the largest publicly-available all-payer pediatric inpatient care database in the United States, containing data from two to three million hospital stays. Its large sample size is ideal for developing national and regional estimates and enables analyses of rare conditions, such as congenital anomalies, as well as uncommon treatments, such as organ transplantation. The KID has been produced every three years (1997, 2000, 2003, 2006, 2009, 2012). Hospital discharge data for 2015 contains a mix of ICD-9 and ICD-10 data (the first three quarters of 2015 contain ICD-9-CM data and the last quarter contains ICD-10-CM/PCS). Because of the complexities of analyzing a mixed data year, the KID was not released for 2015 but was instead released for 2016. The 2016 KID is comprised of ICD-10-CM/PCS data only.

The links below provide detailed documentation for the KID, from a high-level Overview to all the detailed specifications, restrictions, and resources necessary for researchers working and publishing with the KID.
Description of KID Database Restrictions on Use File Specifications and Load Programs Data Elements Additional Resources for Data Elements   ICD-10-CM/PCS Data Included in 2016 KID Information on Change to KID Design in 2000 Known Data Issues KID Supplemental Files HCUP Tools: Labels and Formats
  • Format Programs
    • DRG Formats Program (TXT file, 1.5 MB) Creates SAS formats to label the values of each DRG and MDC category
    • HCUP Formats Program (TXT file, 107 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, 8 KB) Creates SAS formats to label the values of HCUP Diagnosis and Procedure Groups data elements, including Clinical Classifications Software Refined (CCSR) 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, 12.2 MB) Creates SAS formats to label the values of ICD-10-CM Diagnoses and Procedures
    • Severity Formats Program (TXT file, 816 KB) Creates SAS formats to label the values of data elements in HCUP Severity Files
Obtaining HCUP Data

Internet Citation: KID Database Documentation. Healthcare Cost and Utilization Project (HCUP). April 2021. Agency for Healthcare Research and Quality, Rockville, MD.
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Last modified 4/23/21