Skip Navigation

Data Innovations - ICD-10-CM/PCS Resources
The International Classification of Diseases, Tenth Revision, Clinical Modification/Procedure Coding System (ICD-10-CM/PCS) Resources section provides information and educational materials for researchers using Healthcare Cost and Utilization Project (HCUP) and other administrative databases. The HCUP family of health care databases and related software tools and products is made possible by a Federal-State-Industry partnership sponsored by the Agency for Healthcare Research and Quality (AHRQ).
ICD-10-CM/PCS Resources

This Web page summarizes key issues for researchers using HCUP and other administrative databases that include ICD-10-CM/PCS coding. The page documents key differences in the structure of HCUP databases, provides general guidance and forewarning to users analyzing outcomes that may be affected by the transition to the ICD-10-CM/PCS coding system, and lists other related Web resources.

In October 2015, the United States transitioned to the ICD-10-CM diagnosis coding system for most inpatient and outpatient medical encounters and the ICD-10-PCS procedure coding system for inpatient hospital procedures. This transition is expected to have a direct impact on the reporting of medical services. In addition, health services research based on administrative databases will be affected as ICD-10-CM/PCS codes replace ICD-9-CM codes beginning in October 2015.


General Information about ICD-10-CM/PCS

HCUP Databases and ICD-10-CM/PCS Related Data Elements

Doing Analysis with ICD-10-CM/PCS Data

AHRQ-Sponsored Software Tools Using ICD-10-CM/PCS

Other Federal or State Web Resources with Information on ICD-10-CM/PCS

AHRQ welcomes suggestions for additional Federal and State ICD-10-CM/PCS Web Resources. Please e-mail us at

Internet Citation: ICD-10-CM/PCS Resources. Healthcare Cost and Utilization Project (HCUP). April 2018. Agency for Healthcare Research and Quality, Rockville, MD.
Are you having problems viewing or printing pages on this Website?
If you have comments, suggestions, and/or questions, please contact
Privacy Notice, Viewers & Players
Last modified 4/20/18