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NRD File Specifications


In most data years, the NRD is comprised of the core data file and three additional files, in comma-separated values (CSV) format: Hospital File, Severity Measures File, and Diagnosis and Procedure Groups File. The Diagnosis and Procedure Groups File is not available for data years 2016-2017. The following links provide file specifications for the NRD including the dataset name, number of records, and record layout.
 
2020 NRD

Core File Hospital File Severity Measure File Diagnosis and Procedure Groups File Return to Contents


2019 NRD

Core File Hospital File Severity Measure File Diagnosis and Procedure Groups File Return to Contents


2018 NRD

Core File Hospital File Severity Measure File Diagnosis and Procedure Groups File Return to Contents


2017 NRD

Core File Hospital File Severity Measure File Return to Contents


2016 NRD

Core File Hospital File Severity Measure File Return to Contents


2015 NRD

Core File Hospital File Severity Measure File for Discharge Quarters 1-3 (ICD-9-CM) Severity Measure File for Discharge Quarter 4 (ICD-10-CM/PCS) Diagnosis and Procedure Groups File for Discharge Quarters 1-3 (ICD-9-CM) Diagnosis and Procedure Groups File for Discharge Quarter 4 (ICD-10-CM/PCS) Return to Contents


2014 NRD

Core File Hospital File Severity Measure File Diagnosis and Procedure Groups File Return to Contents


2013 NRD

Core File Hospital File Severity Measure File Diagnosis and Procedure Groups File Return to Contents


2012 NRD

Core File Hospital File Severity Measure File Diagnosis and Procedure Groups File Return to Contents


2011 NRD

Core File Hospital File Severity Measure File Diagnosis and Procedure Groups File Return to Contents


2010 NRD

Core File Hospital File Severity Measure File Diagnosis and Procedure Groups File Return to Contents


Internet Citation: NRD File Specifications. Healthcare Cost and Utilization Project (HCUP). December 2022. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/nation/nrd/nrdfilespecs.jsp.
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Last modified 12/6/22