Quality Measure Implementation Guide
2.0.0-ballot - STU 2 Ballot

Quality Measure Implementation Guide - Downloaded Version null See the Directory of published versions

## Library: CAUTI Rate (Experimental)

Official URL: http://hl7.org/fhir/uv/cqm/Library/CAUTIRate | Version: 2.0.0-ballot | Highlight text changes?
Standards status: Informative Draft as of 2026-04-07 | Maturity Level: 1 | Computable Name: CAUTIRate
Other Identifiers: OID:2.16.840.1.113883.4.642.40.61.28.40

DRAFT population criteria and continuous-variable functions used in the calculation of NHSN Catheter-associated Urinary Tract Infection Rates measure.

Metadata
Title | CAUTI Rate
Version | 2.0.0-ballot
Identifier | urn:oid:2.16.840.1.113883.4.642.40.61.28.40
Status | Draft
Experimental | true
Jurisdiction | 001 from http://unstats.un.org/unsd/methods/m49/m49.htm
Topic | FHIR
Topic | CQL
Steward (Publisher) | HL7 International / Clinical Quality Information
Description | DRAFT population criteria and continuous-variable functions used in the calculation of NHSN Catheter-associated Urinary Tract Infection Rates measure.
Type | logic-library from http://terminology.hl7.org/CodeSystem/library-type
Dependency | Description: Library FHIRHelpers Resource: http://hl7.org/fhir/uv/cql/Library/FHIRHelpers|4.0.1 Canonical URL: `http://hl7.org/fhir/uv/cql/Library/FHIRHelpers|4.0.1`
Dependency | Description: Library FHIRCommon Resource: http://hl7.org/fhir/uv/cql/Library/FHIRCommon|2.0.0 Canonical URL: `http://hl7.org/fhir/uv/cql/Library/FHIRCommon|2.0.0`
Dependency | Description: Library Elements Resource: CAUTI Elements Canonical URL: `http://hl7.org/fhir/uv/cqm/Library/CAUTIElements`
Data Requirement | Type: Location Profile(s): Location
Parameters
Name | Use | Card. | Type | Documentation
Measurement Period | In | 0..1 | Period |
Patient | Out | 0..1 | Patient |
Denominator Initial Population | Out | 0..* | Location |
Denominator | Out | 0..* | Location |
Numerator Initial Population | Out | 0..1 | boolean |
Numerator | Out | 0..1 | boolean |
Library Content
CQL Content |
    /*
    @description: Demonstrates Catheter-Associated Urinary Tract Infection Rate as a location-based ratio of continuous variables measure
    @comment: (Number of CAUTIs per location / Number of Urinary Catheter Days per location) * 1000
    @seealso: https://github.com/cqframework/CQL-Formatting-and-Usage-Wiki/blob/master/Source/Cooking%20With%20CQL/93/CAUTI.md
    */
    library CAUTIRate

    using FHIR version '4.0.1'

    include hl7.fhir.uv.cql.FHIRHelpers version '4.0.1' called FHIRHelpers
    include hl7.fhir.uv.cql.FHIRCommon version '2.0.0' called FHIRCommon

    include CAUTIElements called Elements

    parameter "Measurement Period" Interval<DateTime>
      default Interval[@2026-01-01T00:00:00, @2026-12-31T23:59:59]

    context Patient

    define "Denominator Initial Population":
      [Location] L
        with Elements."Encounter During Measurement Period" E
         such that E.location.location.references(L)

    define "Denominator":
      "Denominator Initial Population"

    define function "Denominator Observation"():
      Sum(
        Elements."Catheter Usage During Measurement Period" Usage
          return all duration in days of Usage
      )

    define "Numerator Initial Population":
      exists (Elements."Encounter During Measurement Period")

    define "Numerator":
      "Numerator Initial Population"

    define function "Numerator Observation"():
      Count(Elements."Catheter-Associated UTI")
ELM XML Content |
    Encoded data
ELM JSON Content |
    Encoded data
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