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NASS Description of Data Elements
The Nationwide Ambulatory Surgery Sample (NASS) is a set of ambulatory surgery databases included in the HCUP family. These databases are created by AHRQ through a Federal-State-Industry partnership.
 
KEY_NASS - HCUP NASS record identifier
 
Documentation Sections:
General Notes
Uniform Values
General Notes
 

KEY_NASS is an HCUP record identifier created specifically for the NASS. Its purpose is to uniquely identify records so that the data elements from different NASS files can be combined. KEY_NASS does not link to other HCUP databases or to external databases.

KEY_NASS is a unique record identifier and cannot be used to track a person over time.

 
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Uniform Values
VariableDescriptionValueValue Description
KEY_NASSHCUP NASS record identifiernnnnnnnnHCUP NASS record identifier
 
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Internet Citation: HCUP NASS Description of Data Elements. Healthcare Cost and Utilization Project (HCUP). August 2019. Agency for Healthcare Research and Quality, Rockville, MD. www.hcup-us.ahrq.gov/db/vars/key_nass/nassnote.jsp.
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Last modified 8/14/19