Notes:

To meet the NHSN definitions, infections must be validated using the hospital acquired infection (HAI) standards \cite{28675796}.

Data Collection:

All NHSN abdominal hysterectomy operative procedures require infection surveillance for 30 days following the procedure date. Operative procedures are defined by ICD and CPT codes.
Colon SSIs can be displayed as a Standardized Infection Ratios (SIR) using the following formula:
Expected infections are calculated by NHSN and available by location (unit type) from the baseline period.