Standardised infection ratio (SIR) and Adjusted Ranking Metric (ARM) of hospital-onset CDI Laboratory-identified events (LabID events) among all inpatients in the facility.

Total number of observed hospital-onset incident CDI LabID events among all inpatients in the facility.

Total number of predicted hospital-onset CDI LabID events, calculated using the facility's number of inpatient days, facility type, CDI event reporting from Emergency Department and 24 hour observation units, bed size, ICU bed size, affiliation with medical school, microbiological test method used to identify C. difficile, and community-onset CDI admission prevalence rate.

Data from patients who are not assigned to an inpatient bed are excluded from the denominator counts, including outpatient clinics, 24-hour observation units, and emergency department visits. Inpatient rehab locations and inpatient psychiatric locations that have their own Centers for Medicare and Medicaid Services (CMS) Certification Number (CCN) are excluded. Additionally, data from NICU, SCN, babies in LDRP, well-baby nurseries, or well-baby clinics are excluded from the denominator count.

See denominator for risk adjustment details.

By hospital and state.

Hospital information submitted to the National Healthcare Safety Network (NHSN)

HAC Reduction Program data is displayed at data.cms.gov

www.cms.gov/medicare/payment/prospective-payment-systems/acute-inpatient-pps/hospital-acquired-condition-reduction-program-hacrp

p4qm.org/measures/1717