Understanding the SNF Healthcare Acquired Infection Quality Measure

October 9, 2025
Clinical
This article originally appeared on:

The Quality Measure for SNF Healthcare-Associated Infections (HAI) Requiring Hospitalization evaluates the risk standardized rate of Healthcare-Associated Infections acquired in the SNF resulting in hospitalization. This Claims Based Measure is part of the Quality Reporting Program (QRP). It further impacts Care Compare.  

Eligible SNF Medicare Part A stays for the collection period are identified by reviewing final Medicare Part A Fee for Service claims and matching beneficiary and facility identifying data.  The collection period for this measure is a Calendar Year (CY).

 

SNF stays are excluded from the measure if the following is true:

·      Resident was under 18 years of age at start of stay

·      Length of stay in SNF was less than 4 days

·      Resident was NOT continuously enrolled in Medicare Part A during the SNF stay,365 days prior to the measure period, and 3 days after the end of the SNF stay

·      Resident was NOT discharged from an acute facility within 30 days prior to SNF admission

·      Resident discharged from SNF to federal hospital

·      Care received outside the 50 states, District of Columbia or Puerto Rico, and U.S. Territories

·      Medicare did not pay for the SNF stay

·      Data missing on variables used in measure construction or risk adjustment

·      Stay occurred in a Critical Access Hospital (CAH) swing bed

CMS does provide a list of ICD-10 codes for HAIs on the SNF QRP webpage under downloads within the SNF QRP Claims Based Measure Supplemental Files.   There are close to 800 ICD-10 codes listed.

   

The measure calculation accounts for an incubation window.  This window begins on or after the fourth day of the SNF stay and within 3 days of SNF discharge.  If a measure is marked as present on admission (POA) on the Inpatient (IP) Hospital claim and the ICD-10 code is on the SNF QRP Claims Based Measure Supplemental Codes workbook, it is included in the numerator.  There is also a 14-day repeat infection timeframe (RIT) to exclude preexisting infections.

·      If the number of days between IP stays is <14 days, search for HAI related conditions in prior IP stay

      - If one is found, exclude stay

       - If one is not found, include stay

·      If the number of days between IP stays is >14 days, include stay

 

This measure is risk-adjusted.  The covariates for risk-adjustment are as follows:

·      Age and sex categories

·      Original reason for Medicare entitlement

·      Surgical procedure categories from prior proximal acute care stay

·      Dialysis, without ESRD, during prior proximal acute care stay

·      Principal diagnosis of prior proximal acute care stay

·      Length of prior proximal acute care stay

·      Number of IP stays in prior 365 days prior to SNF admission – excludes IP stay prior to admission

·      Utilization of intensive care unit (ICU) or cardiac care unit (CCU) during prior proximal acute care stay

 

For this measure, a National Observed Rate is determined as well as a Provider-level final score.  This Claims Based Measure affects the QRP, as stated above, and as such impacts the Annual Percentage Update (APU).  The APU can lead to an up to 2% reduction with poor performance.

 

An Interdisciplinary Team approach should be utilized to address issues related to infection prevention including:

·      Perform infection control assessments and identify areas to be addressed

·      Make infection prevention a critical element of a Quality Improvement Plan utilizing data analysis and evidence-based prevention strategies

·      Train and educate staff, volunteers, residents, and families about infection prevention, including handwashing, PPE use, and various infection prevention precautions

·      Complete staff competencies on a regular basis, including planned and unplanned checks, for continued educational purposes

·      Develop outbreak management and response planning

·      Use data analysis of infection rates and outbreaks to develop infection surveillance systems

·      Offer updates to staff, residents, and families regarding infection prevention policies and safety measure

·      Involve leadership in communication of infection prevention

 

There are numerous resources available related to infection prevention and control:

·     NACCHO

·     Infection Control for Healthcare Providers | Infection Control | CDC

·     Infection Prevention and Control Resource Center | Joint Commission

 

To learn more about the Quality Reporting Program, go to Skilled Nursing Facility (SNF) Quality Reporting Program (QRP) | CMS.