Each year of the NIS is comprised of the Core Data File and three or
more additional files, in ASCII text format. A Hospital Weights File
is always included. Severity Measures Files, Diagnosis and Procedure
Groups Files, and database 10% Sample files are also included,
depending on the year. The following links provide file
specifications for the NIS including the dataset name, number of
records, and record layout.
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2021 NIS Core File
2020 NIS Core File
2019 NIS Core File
2018 NIS Core File
2017 NIS Core File
2016 NIS Core File
2015 NIS Core File
2014 NIS Core File
2013 NIS Core File
2012 NIS Core File
2011 NIS Core File
2010 NIS Core File
2009 NIS Core File
2008 NIS Core File
2007 NIS Core File
2006 NIS Core File
2005 NIS Core File
2004 NIS Core File
2003 NIS Core File
2002 NIS Core File
2001 NIS Core File
2000 NIS Core File
1999 NIS - Version 2 Core File
1999 NIS - Version 1 Core File
1998 NIS - Version 2 Core File
1998 NIS - Version 1 Core File
1997 NIS
1996 NIS
1995 NIS
1994 NIS
1993 NIS
1992 - 1988 NIS
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Internet Citation: NIS File Specifications. Healthcare Cost and Utilization Project (HCUP). January 2024. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/nation/nis/nisfilespecs.jsp. |
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Last modified 01/31/24 |