Max Rady College of Medicine

Concept: Surgery Dates

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Concept Description

Last Updated: 2001-11-01


    It is sometimes necessary to "fix" missing surgical procedure dates.

    There are 12 fields for surgical dates (DATE01-DATE12) that correspond to the 12 fields for surgical codes (SC01-SC12) on the hospital claims (from 1987 onward).

    • Surgical dates can be missing or set to zero, even when the corresponding surgical code is completed (eg. SC03 is completed but DATE03 is zero). This occurs when, for example, DATE03 is the same as either DATE02 (if DATE02 is not equal to zero) or DATE01.

    • Thus the previous date not equal to zero can be substituted. For example, if SC01-SC03 are completed, but only DATE01 is completed, DATE01 can be used for all three surgical procedures. If DATE01 is zero and there is a corresponding SC01, then the surgery date is the admittance date.

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  • Roos LL, Roos NP. "Large data bases and research on surgery." In: Rutkow IM; (ed). Socioeconomics of Surgery. St.Louis, MO: Mosby Co; 1989. 259-275.(View)
  • Roos LL, Roos NP, Sharp SM. Monitoring adverse outcomes of surgery using administrative data. Health Care Financing Review 1987;7:5-16. [Abstract] (View)

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Manitoba Centre for Health Policy
Community Health Sciences, Max Rady College of Medicine,
Rady Faculty of Health Sciences,
Room 408-727 McDermot Ave.
University of Manitoba
Winnipeg, MB R3E 3P5 Canada