Quality Measure Implementation Guide
5.0.0 - STU5 United States of America flag

Quality Measure Implementation Guide, published by HL7 International / Clinical Quality Information. This guide is not an authorized publication; it is the continuous build for version 5.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/cqf-measures/ and changes regularly. See the Directory of published versions

Extension: CQFM Aggregate Method

Official URL: http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-aggregateMethod Version: 2.0.0
Active as of 2025-08-26 Computable Name: CQFMAggregateMethod

Specifies which method to be used to aggregate the measure observation values.

For continuous variable measures, the measure observation definition needs to be able to specify how the observations should be aggregated.

Context of Use

Usage info

Usages:

You can also check for usages in the FHIR IG Statistics

Formal Views of Extension Content

Description of Profiles, Differentials, Snapshots, and how the XML and JSON presentations work.

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension Aggregate with
... url 1..1 uri "http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-aggregateMethod"
... value[x] 0..1 code Value of extension
Binding: Measure Aggregate Method (preferred): Aggregation method for a measure (e.g. sum, average, median, minimum, maximum, count)

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension Aggregate with
... id 0..1 string Unique id for inter-element referencing
... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
... url 1..1 uri "http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-aggregateMethod"

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type code: Specifies which method to be used to aggregate the measure observation values.

Differential View

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension Aggregate with
... url 1..1 uri "http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-aggregateMethod"
... value[x] 0..1 code Value of extension
Binding: Measure Aggregate Method (preferred): Aggregation method for a measure (e.g. sum, average, median, minimum, maximum, count)

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension 0..1 Extension Aggregate with
... id 0..1 string Unique id for inter-element referencing
... extension 0..* Extension Additional content defined by implementations
Slice: Unordered, Open by value:url
... url 1..1 uri "http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-aggregateMethod"

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type code: Specifies which method to be used to aggregate the measure observation values.

 

Other representations of profile: CSV, Excel, Schematron

Terminology Bindings

PathConformanceValueSetURI
Extension.value[x]preferredMeasureAggregateMethod
http://terminology.hl7.org/ValueSet/measure-aggregate-method

Constraints

IdGradePath(s)DetailsRequirements
ele-1error**ALL** elementsAll FHIR elements must have a @value or children
: hasValue() or (children().count() > id.count())
ext-1error**ALL** extensionsMust have either extensions or value[x], not both
: extension.exists() != value.exists()