Quality Measure Implementation Guide
1.0.0 - STU 1 International flag

This page is part of the Quality Measure Implementation Guide (v1.0.0: STU 1) based on FHIR (HL7® FHIR® Standard) R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions

Extension: CQM Population Basis

Official URL: http://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-populationBasis Version: 1.0.0
Standards status: Trial-use Maturity Level: 4 Computable Name: CQMPopulationBasis
Other Identifiers: OID:2.16.840.1.113883.4.642.40.61.42.21

The population basis specifies the type of elements in the population. For a subject-based measure, this is boolean (because the subject and the population basis are the same, and the population criteria define yes/no values for each individual in the population). For measures that have a population basis that is different than the subject, this element specifies the type of the population basis. For example, an encounter-based measure has a subject of Patient and a population basis of Encounter, and the population criteria all return lists of Encounters. Note that the subject of a measure can be found in the element subject[x].

A measure specification needs to be able to specify the expected result type of each population criteria. This value SHALL be consistent with the result type of all population-level criteria in the measure.

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 C 0..* Extension What type of population
Constraints: popBasis-1
... url 1..1 uri "http://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-populationBasis"
... value[x] 0..1 Value of extension
Binding: FHIRAllTypes (required): The type of elements in the population
.... valueCode code
.... valueDataRequirement DataRequirement

doco Documentation for this format
NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension C 0..* Extension What type of population
Constraints: popBasis-1
... 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/uv/cqm/StructureDefinition/cqm-populationBasis"
.... valueCode code
.... valueDataRequirement DataRequirement

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type code, DataRequirement: The population basis specifies the type of elements in the population. For a subject-based measure, this is boolean (because the subject and the population basis are the same, and the population criteria define yes/no values for each individual in the population). For measures that have a population basis that is different than the subject, this element specifies the type of the population basis. For example, an encounter-based measure has a subject of Patient and a population basis of Encounter, and the population criteria all return lists of Encounters. Note that the subject of a measure can be found in the element subject[x].

Maturity: 4

Differential View

This structure is derived from Extension

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension C 0..* Extension What type of population
Constraints: popBasis-1
... url 1..1 uri "http://hl7.org/fhir/uv/cqm/StructureDefinition/cqm-populationBasis"
... value[x] 0..1 Value of extension
Binding: FHIRAllTypes (required): The type of elements in the population
.... valueCode code
.... valueDataRequirement DataRequirement

doco Documentation for this format

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: Filtersdoco
.. Extension C 0..* Extension What type of population
Constraints: popBasis-1
... 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/uv/cqm/StructureDefinition/cqm-populationBasis"
.... valueCode code
.... valueDataRequirement DataRequirement

doco Documentation for this format

This structure is derived from Extension

Summary

Simple Extension with the type code, DataRequirement: The population basis specifies the type of elements in the population. For a subject-based measure, this is boolean (because the subject and the population basis are the same, and the population criteria define yes/no values for each individual in the population). For measures that have a population basis that is different than the subject, this element specifies the type of the population basis. For example, an encounter-based measure has a subject of Patient and a population basis of Encounter, and the population criteria all return lists of Encounters. Note that the subject of a measure can be found in the element subject[x].

Maturity: 4

 

Other representations of profile: CSV, Excel, Schematron

Terminology Bindings

PathConformanceValueSetURI
Extension.value[x]requiredFHIRAllTypes
http://hl7.org/fhir/ValueSet/all-types
From the FHIR Standard

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()
popBasis-1errorExtensionIf DataRequirement.type is present, it may only contain the elements 'profile' and 'codeFilter'.
: value.exists() and value.is(DataRequirement) implies ( value.as(DataRequirement).type.exists() and value.as(DataRequirement).limit.empty() and value.as(DataRequirement).sort.empty() and value.as(DataRequirement).dateFilter.empty() and value.as(DataRequirement).subject.empty() and value.as(DataRequirement).mustSupport.empty())