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NASS Description of Data Elements

YEAR - Calendar year
Documentation Sections:
General Notes
Uniform Values
General Notes

The discharge year (YEAR) is always coded. In the 1988-1997 HCUP databases, YEAR is two-digits (e.g., if the discharge year is 1990, then YEAR = 90). Beginning in the 1998 HCUP databases, YEAR is four-digits (e.g., 1998).

Uniform Values
VariableDescriptionValueValue Description
YEARCalendar yearyy2-digit calendar year in 1988-1997 data
yyyy4-digit calendar year beginning with 1998 data

Internet Citation: HCUP NASS Description of Data Elements. Healthcare Cost and Utilization Project (HCUP). August 2019. Agency for Healthcare Research and Quality, Rockville, MD.
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Last modified 8/14/19