OneAquaHealth Project
0.1.0-ci-build - ci-build 150

OneAquaHealth Project, published by OneAquaHealth Project. This guide is not an authorized publication; it is the continuous build for version 0.1.0-ci-build built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7-eu/oah/ and changes regularly. See the Directory of published versions

Resource Profile: Group: OAH Cohort

Official URL: http://hl7.eu/fhir/ig/oah/StructureDefinition/group-oah Version: 0.1.0-ci-build
Draft as of 2026-10-27 Computable Name: GroupOah

Profile for OneAquaHealth person cohorts defined by inclusion and exclusion criteria (for example, age or sex).

Usages:

You can also check for usages in the FHIR IG Statistics

Formal Views of Profile Content

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

NameFlagsCard.TypeDescription & Constraints    Filter: doco
Group C 0..* Group Group of multiple entities
Constraints: grp-1
Group.implicitRules This element is a modifier element. This element is included in summaries. 0..1 uri A set of rules under which this content was created
Group.modifierExtension This element is a modifier element. 0..* Extension Extensions that cannot be ignored
Group.type This element is included in summaries. 1..1 code person | animal | practitioner | device | medication | substance
Binding: GroupType (required): Types of resources that are part of group.
Required Pattern: person (extensions allowed)
Group.actual This element is included in summaries. C 1..1 boolean Descriptive or actual
Required Pattern: false (extensions allowed)
Group.characteristic 1..* BackboneElement Inclusion and exclusion criteria for the cohort.
Group.characteristic.modifierExtension This element is a modifier element. This element is included in summaries. 0..* Extension Extensions that cannot be ignored even if unrecognized
Group.characteristic.code 1..1 CodeableConcept Kind of characteristic
Binding: OAH Cohort Characteristic Code (extensible)
Group.characteristic.value[x] 1..1 Value held by characteristic
Binding Description: (example): Value of descriptive member characteristic; e.g. red, male, pneumonia, Caucasian, etc.
Group.characteristic.value[x].valueCodeableConcept CodeableConcept
Group.characteristic.value[x].valueBoolean boolean
Group.characteristic.value[x].valueQuantity Quantity
Group.characteristic.value[x].valueRange Range
Group.characteristic.value[x].valueReference Reference(Location)
Group.characteristic.exclude 1..1 boolean True for exclusion criteria; false for inclusion.

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Group.type Base required GroupType 📍4.0.1 FHIR Std.
Group.characteristic.​code Base extensible OAH Cohort Characteristic Code 📦0.1.0-ci-build This IG
Group.characteristic.​value[x] Base example Not State Unknown

Constraints

Id Grade Path(s) Description Expression
dom-2 error Group If the resource is contained in another resource, it SHALL NOT contain nested Resources contained.contained.empty()
dom-3 error Group If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4 error Group If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5 error Group If a resource is contained in another resource, it SHALL NOT have a security label contained.meta.security.empty()
dom-6 best practice Group A resource should have narrative for robust management text.`div`.exists()
ele-1 error **ALL** elements All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1 error **ALL** extensions Must have either extensions or value[x], not both extension.exists() != value.exists()
grp-1 error Group Can only have members if group is "actual" member.empty() or (actual = true)

This structure is derived from Group

NameFlagsCard.TypeDescription & Constraints    Filter: doco
Group 0..* Group Group of multiple entities
Group.type 1..1 code person | animal | practitioner | device | medication | substance
Required Pattern: person (extensions allowed)
Group.actual 1..1 boolean Descriptive or actual
Required Pattern: false (extensions allowed)
Group.characteristic 1..* BackboneElement Inclusion and exclusion criteria for the cohort.
Group.characteristic.code 1..1 CodeableConcept Kind of characteristic
Binding: OAH Cohort Characteristic Code (extensible)
Group.characteristic.value[x] 1..1 Value held by characteristic
Group.characteristic.value[x].valueCodeableConcept CodeableConcept
Group.characteristic.value[x].valueBoolean boolean
Group.characteristic.value[x].valueQuantity Quantity
Group.characteristic.value[x].valueRange Range
Group.characteristic.value[x].valueReference Reference(Location)
Group.characteristic.exclude 1..1 boolean True for exclusion criteria; false for inclusion.

doco Documentation for this format

Terminology Bindings (Differential)

Path Status Usage ValueSet Version Source
Group.characteristic.​code Base extensible OAH Cohort Characteristic Code 📦0.1.0-ci-build This IG
NameFlagsCard.TypeDescription & Constraints    Filter: doco
Group C 0..* Group Group of multiple entities
Constraints: grp-1
Group.id This element is included in summaries. 0..1 id Logical id of this artifact
Group.meta This element is included in summaries. 0..1 Meta Metadata about the resource
Group.implicitRules This element is a modifier element. This element is included in summaries. 0..1 uri A set of rules under which this content was created
Group.language 0..1 code Language of the resource content
Binding: CommonLanguages (preferred): A human language.
Additional BindingsPurpose
AllLanguages Max Binding
Group.text 0..1 Narrative Text summary of the resource, for human interpretation
This profile does not constrain the narrative in regard to content, language, or traceability to data elements
Group.contained 0..* Resource Contained, inline Resources
Group.extension 0..* Extension Additional content defined by implementations
Group.modifierExtension This element is a modifier element. 0..* Extension Extensions that cannot be ignored
Group.identifier This element is included in summaries. 0..* Identifier Unique id
Group.active This element is included in summaries. 0..1 boolean Whether this group's record is in active use
Group.type This element is included in summaries. 1..1 code person | animal | practitioner | device | medication | substance
Binding: GroupType (required): Types of resources that are part of group.
Required Pattern: person (extensions allowed)
Group.actual This element is included in summaries. C 1..1 boolean Descriptive or actual
Required Pattern: false (extensions allowed)
Group.code This element is included in summaries. 0..1 CodeableConcept Kind of Group members
Binding Description: (example): Kind of particular resource; e.g. cow, syringe, lake, etc.
Group.name This element is included in summaries. 0..1 string Label for Group
Group.quantity This element is included in summaries. 0..1 unsignedInt Number of members
Group.managingEntity This element is included in summaries. 0..1 Reference(Organization | RelatedPerson | Practitioner | PractitionerRole) Entity that is the custodian of the Group's definition
Group.characteristic 1..* BackboneElement Inclusion and exclusion criteria for the cohort.
Group.characteristic.id 0..1 string Unique id for inter-element referencing
Group.characteristic.extension 0..* Extension Additional content defined by implementations
Group.characteristic.modifierExtension This element is a modifier element. This element is included in summaries. 0..* Extension Extensions that cannot be ignored even if unrecognized
Group.characteristic.code 1..1 CodeableConcept Kind of characteristic
Binding: OAH Cohort Characteristic Code (extensible)
Group.characteristic.value[x] 1..1 Value held by characteristic
Binding Description: (example): Value of descriptive member characteristic; e.g. red, male, pneumonia, Caucasian, etc.
Group.characteristic.value[x].valueCodeableConcept CodeableConcept
Group.characteristic.value[x].valueBoolean boolean
Group.characteristic.value[x].valueQuantity Quantity
Group.characteristic.value[x].valueRange Range
Group.characteristic.value[x].valueReference Reference(Location)
Group.characteristic.exclude 1..1 boolean True for exclusion criteria; false for inclusion.
Group.characteristic.period 0..1 Period Period over which characteristic is tested

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Group.language Base preferred Common Languages 📍4.0.1 FHIR Std.
Group.type Base required GroupType 📍4.0.1 FHIR Std.
Group.code Base example Not State Unknown
Group.characteristic.​code Base extensible OAH Cohort Characteristic Code 📦0.1.0-ci-build This IG
Group.characteristic.​value[x] Base example Not State Unknown

Constraints

Id Grade Path(s) Description Expression
dom-2 error Group If the resource is contained in another resource, it SHALL NOT contain nested Resources contained.contained.empty()
dom-3 error Group If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4 error Group If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5 error Group If a resource is contained in another resource, it SHALL NOT have a security label contained.meta.security.empty()
dom-6 best practice Group A resource should have narrative for robust management text.`div`.exists()
ele-1 error **ALL** elements All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1 error **ALL** extensions Must have either extensions or value[x], not both extension.exists() != value.exists()
grp-1 error Group Can only have members if group is "actual" member.empty() or (actual = true)

This structure is derived from Group

Summary

Mandatory: 1 element
Prohibited: 1 element

Key Elements View

NameFlagsCard.TypeDescription & Constraints    Filter: doco
Group C 0..* Group Group of multiple entities
Constraints: grp-1
Group.implicitRules This element is a modifier element. This element is included in summaries. 0..1 uri A set of rules under which this content was created
Group.modifierExtension This element is a modifier element. 0..* Extension Extensions that cannot be ignored
Group.type This element is included in summaries. 1..1 code person | animal | practitioner | device | medication | substance
Binding: GroupType (required): Types of resources that are part of group.
Required Pattern: person (extensions allowed)
Group.actual This element is included in summaries. C 1..1 boolean Descriptive or actual
Required Pattern: false (extensions allowed)
Group.characteristic 1..* BackboneElement Inclusion and exclusion criteria for the cohort.
Group.characteristic.modifierExtension This element is a modifier element. This element is included in summaries. 0..* Extension Extensions that cannot be ignored even if unrecognized
Group.characteristic.code 1..1 CodeableConcept Kind of characteristic
Binding: OAH Cohort Characteristic Code (extensible)
Group.characteristic.value[x] 1..1 Value held by characteristic
Binding Description: (example): Value of descriptive member characteristic; e.g. red, male, pneumonia, Caucasian, etc.
Group.characteristic.value[x].valueCodeableConcept CodeableConcept
Group.characteristic.value[x].valueBoolean boolean
Group.characteristic.value[x].valueQuantity Quantity
Group.characteristic.value[x].valueRange Range
Group.characteristic.value[x].valueReference Reference(Location)
Group.characteristic.exclude 1..1 boolean True for exclusion criteria; false for inclusion.

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Group.type Base required GroupType 📍4.0.1 FHIR Std.
Group.characteristic.​code Base extensible OAH Cohort Characteristic Code 📦0.1.0-ci-build This IG
Group.characteristic.​value[x] Base example Not State Unknown

Constraints

Id Grade Path(s) Description Expression
dom-2 error Group If the resource is contained in another resource, it SHALL NOT contain nested Resources contained.contained.empty()
dom-3 error Group If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4 error Group If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5 error Group If a resource is contained in another resource, it SHALL NOT have a security label contained.meta.security.empty()
dom-6 best practice Group A resource should have narrative for robust management text.`div`.exists()
ele-1 error **ALL** elements All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1 error **ALL** extensions Must have either extensions or value[x], not both extension.exists() != value.exists()
grp-1 error Group Can only have members if group is "actual" member.empty() or (actual = true)

Differential View

This structure is derived from Group

NameFlagsCard.TypeDescription & Constraints    Filter: doco
Group 0..* Group Group of multiple entities
Group.type 1..1 code person | animal | practitioner | device | medication | substance
Required Pattern: person (extensions allowed)
Group.actual 1..1 boolean Descriptive or actual
Required Pattern: false (extensions allowed)
Group.characteristic 1..* BackboneElement Inclusion and exclusion criteria for the cohort.
Group.characteristic.code 1..1 CodeableConcept Kind of characteristic
Binding: OAH Cohort Characteristic Code (extensible)
Group.characteristic.value[x] 1..1 Value held by characteristic
Group.characteristic.value[x].valueCodeableConcept CodeableConcept
Group.characteristic.value[x].valueBoolean boolean
Group.characteristic.value[x].valueQuantity Quantity
Group.characteristic.value[x].valueRange Range
Group.characteristic.value[x].valueReference Reference(Location)
Group.characteristic.exclude 1..1 boolean True for exclusion criteria; false for inclusion.
Group.member 0..0 Who or what is in group

doco Documentation for this format

Terminology Bindings (Differential)

Path Status Usage ValueSet Version Source
Group.characteristic.​code Base extensible OAH Cohort Characteristic Code 📦0.1.0-ci-build This IG

Snapshot View

NameFlagsCard.TypeDescription & Constraints    Filter: doco
Group C 0..* Group Group of multiple entities
Constraints: grp-1
Group.id This element is included in summaries. 0..1 id Logical id of this artifact
Group.meta This element is included in summaries. 0..1 Meta Metadata about the resource
Group.implicitRules This element is a modifier element. This element is included in summaries. 0..1 uri A set of rules under which this content was created
Group.language 0..1 code Language of the resource content
Binding: CommonLanguages (preferred): A human language.
Additional BindingsPurpose
AllLanguages Max Binding
Group.text 0..1 Narrative Text summary of the resource, for human interpretation
This profile does not constrain the narrative in regard to content, language, or traceability to data elements
Group.contained 0..* Resource Contained, inline Resources
Group.extension 0..* Extension Additional content defined by implementations
Group.modifierExtension This element is a modifier element. 0..* Extension Extensions that cannot be ignored
Group.identifier This element is included in summaries. 0..* Identifier Unique id
Group.active This element is included in summaries. 0..1 boolean Whether this group's record is in active use
Group.type This element is included in summaries. 1..1 code person | animal | practitioner | device | medication | substance
Binding: GroupType (required): Types of resources that are part of group.
Required Pattern: person (extensions allowed)
Group.actual This element is included in summaries. C 1..1 boolean Descriptive or actual
Required Pattern: false (extensions allowed)
Group.code This element is included in summaries. 0..1 CodeableConcept Kind of Group members
Binding Description: (example): Kind of particular resource; e.g. cow, syringe, lake, etc.
Group.name This element is included in summaries. 0..1 string Label for Group
Group.quantity This element is included in summaries. 0..1 unsignedInt Number of members
Group.managingEntity This element is included in summaries. 0..1 Reference(Organization | RelatedPerson | Practitioner | PractitionerRole) Entity that is the custodian of the Group's definition
Group.characteristic 1..* BackboneElement Inclusion and exclusion criteria for the cohort.
Group.characteristic.id 0..1 string Unique id for inter-element referencing
Group.characteristic.extension 0..* Extension Additional content defined by implementations
Group.characteristic.modifierExtension This element is a modifier element. This element is included in summaries. 0..* Extension Extensions that cannot be ignored even if unrecognized
Group.characteristic.code 1..1 CodeableConcept Kind of characteristic
Binding: OAH Cohort Characteristic Code (extensible)
Group.characteristic.value[x] 1..1 Value held by characteristic
Binding Description: (example): Value of descriptive member characteristic; e.g. red, male, pneumonia, Caucasian, etc.
Group.characteristic.value[x].valueCodeableConcept CodeableConcept
Group.characteristic.value[x].valueBoolean boolean
Group.characteristic.value[x].valueQuantity Quantity
Group.characteristic.value[x].valueRange Range
Group.characteristic.value[x].valueReference Reference(Location)
Group.characteristic.exclude 1..1 boolean True for exclusion criteria; false for inclusion.
Group.characteristic.period 0..1 Period Period over which characteristic is tested

doco Documentation for this format

Terminology Bindings

Path Status Usage ValueSet Version Source
Group.language Base preferred Common Languages 📍4.0.1 FHIR Std.
Group.type Base required GroupType 📍4.0.1 FHIR Std.
Group.code Base example Not State Unknown
Group.characteristic.​code Base extensible OAH Cohort Characteristic Code 📦0.1.0-ci-build This IG
Group.characteristic.​value[x] Base example Not State Unknown

Constraints

Id Grade Path(s) Description Expression
dom-2 error Group If the resource is contained in another resource, it SHALL NOT contain nested Resources contained.contained.empty()
dom-3 error Group If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4 error Group If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5 error Group If a resource is contained in another resource, it SHALL NOT have a security label contained.meta.security.empty()
dom-6 best practice Group A resource should have narrative for robust management text.`div`.exists()
ele-1 error **ALL** elements All FHIR elements must have a @value or children hasValue() or (children().count() > id.count())
ext-1 error **ALL** extensions Must have either extensions or value[x], not both extension.exists() != value.exists()
grp-1 error Group Can only have members if group is "actual" member.empty() or (actual = true)

This structure is derived from Group

Summary

Mandatory: 1 element
Prohibited: 1 element

 

Other representations of profile: CSV, Excel, Schematron