NPR - Number of ICD-9-CM procedures on this discharge
Documentation Sections:
General Notes
Uniform Values
State Specific Notes
General Notes

NPR indicates the total number of ICD-9-CM procedures (valid and invalid) coded on the discharge record. In assigning NPR, the first listed procedure is included in the count, even if it is blank, so long as there is an additional procedure present (see table below).

Value Description
0 No procedures are coded on the record.
1 Only the first listed procedure (PR1) is coded. All secondary procedures are blank.
2 One secondary procedure (PR2) is coded. The first listed procedure (PR1) may be coded or blank.
3 The second and third procedures (PR2 and PR3) are coded. The first listed procedure (PR1) may be coded or blank.

For data beginning in the fourth quarter of 2015, the count of procedures is stored in the data element I10_NPR to indicate the implementation of the ICD-10-CM/PCS coding system.

Uniform Values
VariableDescriptionValueValue Description
NPRNumber of ICD-9-CM procedures on this discharge0 - nnNumber of procedures
State Specific Notes


For 1995-1996 data only, some discharges have NPR greater than 0, and yet all procedure codes are missing. This is due to constraints of the HCUP processor in handling CPT and HCPCS codes. Pennsylvania reports ICD-9-CM procedure codes on most of their discharges, but some use CPT and HCPCS procedure codes. CPT and HCPCS procedure codes could not be retained in the HCUP data because they are 5 characters and the HCUP procedure fields are 4 characters in length. Discharges with CPT and HCPCS procedure codes were processed by HCUP as follows:

  • PRSYS identifies the procedure coding system as CPT or HCPCS.
  • NPR is the number of non-missing CPT or HCPCS procedure codes supplied by Pennsylvania.
  • The HCUP procedure codes are set to missing (PRn = blank).

In other years, CPT and HCPCS codes are either masked or were handled differently in other years. See the Pennsylvania note on procedures (PRn) for specific details.


Internet Citation: HCUP KID Description of Data Elements. Healthcare Cost and Utilization Project (HCUP). September 2008. Agency for Healthcare Research and Quality, Rockville, MD.
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Last modified 9/17/08