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Central Distributor SASD: Description of Data Elements

SEQ_ASD - SASD sequence number
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes

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.
Uniform Values
VariableDescriptionValueValue Description
SEQ_ASDSASD sequence number13(n)Record sequence number in SASD
State Specific Notes



Internet Citation: HCUP Central Distributor SASD Description of Data Elements - All States. Healthcare Cost and Utilization Project (HCUP). May 2024. Agency for Healthcare Research and Quality, Rockville, MD.
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Last modified 5/22/24