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NIS Description of Data Elements

SEQ_SID - HCUP SID sequence number

Documentation Sections:

The unique HCUP record number assigned to each discharge varies by year.

In the 1988-1993 data, the data element SEQ is on all HCUP databases.
In the 1994-1997 data,
- SEQ is only on the NIS.
- SEQ_SID is on the HCUP inpatient databases (SID and NIS), and
- SEQ_ASD is on the HCUP outpatient databases.
Beginning in the 1998 data, the data element KEY is used on all HCUP databases.

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Uniform Values

Variable	Description	Value	Value Description
SEQ_SID	HCUP SID sequence number	13(n)	Record sequence number in SID

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State Specific Notes

None

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Internet Citation: HCUP NIS Description of Data Elements. Healthcare Cost and Utilization Project (HCUP). September 2008. Agency for Healthcare Research and Quality, Rockville, MD. hcup-us.ahrq.gov/db/vars/seq_sid/nisnote.jsp.

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Last modified 9/17/08