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Central Distributor SID: Description of Data Elements

PRSYS - Procedure coding system
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes

PRSYS indicates the coding system for the procedures:

  • Almost all HCUP inpatient stays use ICD-9-CM procedure codes (PRSYS = 1)
  • If Physicians' Current Procedural Terminology (CPT) or HCFA Common Procedure Coding System (HCPCS) procedure codes are indicated (PRSYS = 2 or 3), then the procedure codes are set to missing (PRn = blank). CPT and HCPCS procedure codes could not be retained in the HCUP data because they are 5 characters, and the HCUP procedure fields (PRn) are 4 characters in length.
  • If the procedure coding system was not specified by the data source, then PRSYS is missing (PRSYS =l .)

The data element PRSYS was discontinued in 1998.

Uniform Values
VariableDescriptionValueValue Description
PRSYSProcedure coding system1ICD-9-CM
State Specific Notes



Internet Citation: HCUP Central Distributor SID Description of Data Elements - All States. Healthcare Cost and Utilization Project (HCUP). August 2008. Agency for Healthcare Research and Quality, Rockville, MD.
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Last modified 8/12/08