Notes:

To meet the NHSN definitions, infections must be validated using the hospital acquired infection (HAI) standards \cite{00021}. Infection rates  can  be  stratified  by  unit  types  further  defined  by  CDC \cite{00022}. Infections  that  were  present  on  admission (POA) are not considered HAIs and not counted.
Data Collection:
CDiff and patient days can be collected through surveillance (at least once per month) or gathered through electronicdocumentation.   Infections   must   be   monitored   according   to   NHSN   surveillance   definitions.   Denominators documented electronically must match manual counts (+/- 5%) for a 3 month validation period.

Settings:

Infection  Surveillance  will  occur  in  any  inpatient  location  where  denominator  data  can  be  collected,  which  may include  critical/intensive  care  units  (ICU),  specialty  care  areas  (SCA),  step-down  units,  wards,  and  chronic  care units.  Surveillance  will  NOT  be  performed  in  Neonatal  Intensive  Care  Units  (NICU),  Specialty  Care  Nurseries (SCN),  babies  in  LDRP,  or  well-baby  nurseries.  If  LDRP  locations  are  being  monitored,  baby  counts  must  be removed.

Mortality (will be calculated by the Patient Safety Movement Foundation:

The PSMF, when available, will use the mortality rates associated with Hospital Acquired Conditions targeted in the Partnership for Patient's grant funded Hospital Engagement Networks (HEN). The program targeted 10 hospital acquired conditions to reduce medical harm and costs of care. "At the outset of the PfP initiative, HHS agencies contributed their expertise to developing a measurement strategy by which to track national progress in patient safety--both in general and specifically related to the preventable HACs being addressed by the PfP. In conjunction with CMS's overall leadership of the PfP, AHRQ has helped coordinate development and use of the national measurement strategy. The results using this national measurement strategy have been referred to as the "AHRQ National Scorecard," which provides summary data on the national HAC rate \cite{ahrq2016}. Based on these data the estimated additional inpatient mortality for CDI is 0.014 (14 per 1000 events).