**README: Bacteremia and Fungemia Surveillance Module: Hospital Onset Bacteremia**



Last Updated: 4.27.2026



The folder contains materials related to CDC's National Healthcare Safety Networks (NHSN) Bacteremia and Fungemia Surveillance Module for Fast Healthcare Interoperability Reporting (FHIR®).



In addition to the contents below, facilities that are interested in comprehensive data submission practices for the NHSN Digital Quality Measures (dQMs) should reference the NHSN FHIR® ACH dQM Implementation Guide (IG). This IG contains specific measure profiles, including bacteremia and fungemia, for tailored data submissions to NHSN. The ACH dQM IG can be accessed here, ( https://www.cdc.gov/nhsn/fhirportal/dqm/ig/). Details about the Hospital Onset- Bacteremia (HOB) clinical quality language (CQL), and monthly initial population descriptions and JavaScript Object Notation (JSON) files can be found (https://www.cdc.gov/nhsn/fhirportal/dqm/ig/Measure-NHSNAcuteCareHospitalMonthlyInitialPopulation.html). The IG that is currently is use for NHSN dQM reporting is available by selecting the link above. Older versions of the IG can be found in the Publication (Version) History Page found here, https://hl7.org/fhir/us/nhsn-dqm/history.html



Contents



This ZIP folder includes the following files:



1. Medication-related Hospital Onset Bacteremia Flow Diagram (pdf)-- Visual depiction of the logic that identifies the inclusion and exclusion criteria to meet the initial population and denominator requirements for HOB.

2\. Bacteremia and Fungemia Surveillance Module Protocol (pdf)-- Maintained by CDC, the Bacteremia and Fungemia Surveillance Module Protocol that includes the HOB definitions and reporting criteria.



3\. Bacteremia and Fungemia Value Set Package (xlsx)--Subset of concepts from the code systems used in the concepts to make up the Bacteremia and Fungemia Surveillance module.



4\. FHIR data element-to-metric mapping (xlsx)--Coming soon.

