The data element PCLASS_ORPROC indicates whether a major operating room procedure was reported on the discharge record.

The presence of operating room procedures reported on a discharge record is determined using the Procedure Classes Refined for ICD-10-PCS. Each ICD-10-PCS procedure code on the record is classified into one of four procedure classes:

• Minor Diagnostic: Non-operating room procedures that are diagnostic (e.g., BW2800Z CT scan of head using high osmolar contrast)
• Minor Therapeutic - Non-operating room procedures that are therapeutic (e.g., 079030Z drainage of head lymphatic, percutaneous approach)
• Major Diagnostic - All procedures considered valid operating room procedures by the Diagnosis Related Group (DRG) grouper and that are performed for diagnostic reasons (e.g., 00B00ZX excision of brain, open approach, diagnostic)
• Major Therapeutic - All procedures considered valid operating room procedures by the Diagnosis Related Group (DRG) grouper and that are performed for therapeutic reasons (e.g., 021008W bypass coronary artery, one artery from aorta with zooplastic tissue, open approach).

If at least one major diagnostic or major therapeutic procedure is included on the record, then PCLASS_ORPROC is set to 1. More information on Procedure Class is available under Tools & Software on the HCUP-US website.

Prior to data year 2020, the major operating room procedure indicator is stored in the data element I10_ORPROC.