Guidance

This profile represents a PICO Question – a structured definition of the clinical question in the context of guidelines and recommendations using the Population, Intervention, Comparator, and Outcome (PICO) framework.

Overview

PICO questions are fundamental to evidence-based medicine and guideline development. They structure clinical questions in a way that facilitates systematic literature searches and evidence evaluation.

Key Elements

Question Code

The code element identifies this as a PICO question:

* code = $cs-pico#pico-question

Combination Method

All characteristics must be present together (logical AND):

* combinationMethod = $cs-group-characteristic-combination#all-of

PICO Characteristics

The profile provides slices for each PICO component:

Population (P) – Who is affected?

* characteristic[population]
  * code = $cs-pico#population
  * valueReference = Reference(PopulationDefinition)

Intervention (I) – What is being evaluated?

* characteristic[intervention]
  * code = $cs-pico#intervention
  * valueReference = Reference(InterventionDefinition)

Comparator (C) – What is the alternative?

* characteristic[comparator]
  * code = $cs-pico#comparator
  * valueReference = Reference(ComparatorDefinition)

Outcome (O) – What are the relevant outcomes? (can have multiple)

* characteristic[outcome]
  * code = $cs-pico#outcome
  * valueReference = Reference(OutcomeDefinition)

Value Types

Each characteristic supports multiple value types:

• CodeableConcept – Coded values
• Reference – References to detailed definitions
• Expression – Formal expressions

Linking to Recommendations

PICO questions can be linked to recommendations using the relatesTo[picoQuestion] slice in the Recommendation profile:

// In the Recommendation instance:
* relatesTo[picoQuestion]
  * type = #derived-from
  * targetReference = Reference(MyPICOQuestion)

Example Usage

Instance: PICOQuestionExample
InstanceOf: pico-question
Usage: #example
* characteristic[population]
  * code = $cs-pico#population
  * valueReference = Reference(AdultPatientPopulation)
* characteristic[intervention]
  * code = $cs-pico#intervention
  * valueReference = Reference(DrugAIntervention)
* characteristic[comparator]
  * code = $cs-pico#comparator
  * valueReference = Reference(PlaceboComparator)
* characteristic[outcome][+]
  * code = $cs-pico#outcome
  * valueReference = Reference(MortalityOutcome)
* characteristic[outcome][+]
  * code = $cs-pico#outcome
  * valueReference = Reference(QualityOfLifeOutcome)

This profile of a FHIR Group is derived from the conceptual-cohort-definition FHIR resource.

• Key Elements Table
• Differential Table
• Snapshot Table
• Statistics/References
• All

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Group	C	0..*	ConceptualCohortDefinition	Group of multiple entities Interfaces Implemented: CanonicalResource Constraints: cnl-2
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
contained		0..*	Resource	Contained, inline Resources
Slices for extension				Content/Rules for all slices
extension:author		0..*	ContactDetail	Who authored the artifact URL: http://hl7.org/fhir/StructureDefinition/artifact-author
extension:recorder		0..*	ContactDetail	Who entered the data URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/artifact-recorder
extension:citeAs		0..1	markdown	Citation for this Resource URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/cite-as
extension:relatesTo		0..*	(Complex)	Related artifact URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to
extension:RelatesToWithQuotation		0..*	(Complex)	Related artifact with quoted portion URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to-with-quotation
extension:characteristicExpression		0..1	Expression	Criteria for group membership URL: http://hl7.org/fhir/StructureDefinition/characteristicExpression
extension:publicationStatus		0..1	CodeableConcept	Publication status URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/artifact-publication-status Binding: Cited Artifact Status Type (preferred)
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored
status	?!Σ	0..1	code	draft | active | retired | unknown Binding: PublicationStatus (required): The lifecycle status of an artifact.
membership	Σ	1..1	code	definitional | conceptual | enumerated Binding: GroupMembershipBasis (required): The basis for membership in a group Required Pattern: conceptual
code	Σ	0..1	CodeableConcept	Use of the Group (and by implication, kind of members) Binding: GroupCode (extensible): A code that describes the kind of group, which usually dictates what kind if entities can be in the group. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: pico-question
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
combinationMethod	?!Σ	0..1	code	all-of | any-of | at-least | at-most | except-subset Binding: GroupCharacteristicCombination (required) Required Pattern: all-of
Slices for characteristic	Σ	0..*	BackboneElement	Include / Exclude group members by Trait Slice: Unordered, Open by value:code
characteristic:All Slices				Content/Rules for all slices
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc.
value[x]	Σ	1..1		Value held by characteristic
valueCodeableConcept			CodeableConcept
valueBoolean			boolean
valueQuantity			Quantity
valueRange			Range
valueReference			Reference(Any)
valueUri			uri
valueExpression			Expression
exclude	Σ	1..1	boolean	Group includes or excludes
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
characteristic:population	Σ	0..1	BackboneElement	Include / Exclude group members by Trait
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: population
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Population)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
characteristic:intervention	Σ	0..1	BackboneElement	Include / Exclude group members by Trait
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: intervention
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Intervention)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
characteristic:comparator	Σ	0..1	BackboneElement	Include / Exclude group members by Trait
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: comparator
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Comparator)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
characteristic:outcome	Σ	0..*	BackboneElement	Include / Exclude group members by Trait
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: outcome
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Outcome)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Group.status	Base	required	PublicationStatus	📍6.0.0-ballot3	FHIR Std.
Group.membership	Base	required	Group Membership Basis	📍6.0.0-ballot3	FHIR Std.
Group.code	Base	extensible	Group Code	📍6.0.0-ballot3	FHIR Std.
Group.combinationMethod	Base	required	Group Characteristic Combination	📍6.0.0-ballot3	FHIR Std.
Group.characteristic.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:population.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:population.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:intervention.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:intervention.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:comparator.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:comparator.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:outcome.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:outcome.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.

Constraints

Id	Grade	Path(s)	Description	Expression
cnl-2	error	Group	Group.type SHALL be defined if Group.membership is either 'definitional' or 'enumerated'	Group.type.exists() or (Group.membership = 'conceptual')
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()

This structure is derived from ConceptualCohortDefinition

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Group		0..*	ConceptualCohortDefinition	Group of multiple entities Interfaces Implemented: CanonicalResource
code		0..1	CodeableConcept	Use of the Group (and by implication, kind of members) Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
code		1..1	code	Symbol in syntax defined by the system Fixed Value: pico-question
combinationMethod		0..1	code	all-of | any-of | at-least | at-most | except-subset Required Pattern: all-of
Slices for characteristic		0..*	BackboneElement	Include / Exclude group members by Trait Slice: Unordered, Open by value:code
characteristic:population		0..1	BackboneElement	Include / Exclude group members by Trait
code		1..1	CodeableConcept	Kind of characteristic Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
code		1..1	code	Symbol in syntax defined by the system Fixed Value: population
Slices for value[x]		1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference		0..1	Reference(Conceptual Cohort Definition Population)	Value held by characteristic
characteristic:intervention		0..1	BackboneElement	Include / Exclude group members by Trait
code		1..1	CodeableConcept	Kind of characteristic Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
code		1..1	code	Symbol in syntax defined by the system Fixed Value: intervention
Slices for value[x]		1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference		0..1	Reference(Conceptual Cohort Definition Intervention)	Value held by characteristic
characteristic:comparator		0..1	BackboneElement	Include / Exclude group members by Trait
code		1..1	CodeableConcept	Kind of characteristic Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
code		1..1	code	Symbol in syntax defined by the system Fixed Value: comparator
Slices for value[x]		1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference		0..1	Reference(Conceptual Cohort Definition Comparator)	Value held by characteristic
characteristic:outcome		0..*	BackboneElement	Include / Exclude group members by Trait
code		1..1	CodeableConcept	Kind of characteristic Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
code		1..1	code	Symbol in syntax defined by the system Fixed Value: outcome
Slices for value[x]		1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference		0..1	Reference(Conceptual Cohort Definition Outcome)	Value held by characteristic
Documentation for this format

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Group	C	0..*	ConceptualCohortDefinition	Group of multiple entities Interfaces Implemented: CanonicalResource Constraints: cnl-2
id	Σ	0..1	id	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: AllLanguages (required): IETF language tag for a human language Additional Bindings Purpose CommonLanguages Starter
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
contained		0..*	Resource	Contained, inline Resources
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
extension:author		0..*	ContactDetail	Who authored the artifact URL: http://hl7.org/fhir/StructureDefinition/artifact-author
extension:recorder		0..*	ContactDetail	Who entered the data URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/artifact-recorder
extension:citeAs		0..1	markdown	Citation for this Resource URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/cite-as
extension:relatesTo		0..*	(Complex)	Related artifact URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to
extension:RelatesToWithQuotation		0..*	(Complex)	Related artifact with quoted portion URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to-with-quotation
extension:characteristicExpression		0..1	Expression	Criteria for group membership URL: http://hl7.org/fhir/StructureDefinition/characteristicExpression
extension:publicationStatus		0..1	CodeableConcept	Publication status URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/artifact-publication-status Binding: Cited Artifact Status Type (preferred)
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored
url	ΣC	0..1	uri	Canonical identifier for this Group, represented as an absolute URI (globally unique) Constraints: cnl-1
identifier	Σ	0..*	Identifier	Business Identifier for this Group
version	Σ	0..1	string	Business version of the Group
versionAlgorithm[x]	Σ	0..1		How to compare versions Binding: VersionAlgorithm (extensible)
versionAlgorithmString			string
versionAlgorithmCoding			Coding
name	Σ	0..1	string	Label for Group
title	Σ	0..1	string	Name for this Group (human friendly)
status	?!Σ	0..1	code	draft | active | retired | unknown Binding: PublicationStatus (required): The lifecycle status of an artifact.
experimental	Σ	0..1	boolean	For testing only - never for real usage
date	Σ	0..1	dateTime	Date last changed
publisher	Σ	0..1	string	Name of the publisher/steward (organization or individual)
contact	Σ	0..*	ContactDetail	Contact details for the publisher
description		0..1	markdown	Natural language description of the group
useContext	Σ	0..*	UsageContext	The context that the content is intended to support
purpose		0..1	markdown	Why this Group is defined
copyright		0..1	markdown	Use and/or publishing restrictions
copyrightLabel		0..1	string	Copyright holder and year(s)
type	Σ	0..1	code	person | animal | practitioner | device | careteam | healthcareservice | location | organization | relatedperson | specimen | medication | substance | biologicallyDerivedProduct | nutritionProduct Binding: GroupType (required): Types of resources that are part of group.
membership	Σ	1..1	code	definitional | conceptual | enumerated Binding: GroupMembershipBasis (required): The basis for membership in a group Required Pattern: conceptual
code	Σ	0..1	CodeableConcept	Use of the Group (and by implication, kind of members) Binding: GroupCode (extensible): A code that describes the kind of group, which usually dictates what kind if entities can be in the group. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: pico-question
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
managingEntity	Σ	0..1	Reference(Organization | RelatedPerson | Practitioner | PractitionerRole)	Entity that is the custodian of the Group's definition
combinationMethod	?!Σ	0..1	code	all-of | any-of | at-least | at-most | except-subset Binding: GroupCharacteristicCombination (required) Required Pattern: all-of
combinationThreshold		0..1	positiveInt	Provides the value of "n" when "at-least" or "at-most" codes are used
Slices for characteristic	Σ	0..*	BackboneElement	Include / Exclude group members by Trait Slice: Unordered, Open by value:code
characteristic:All Slices				Content/Rules for all slices
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc.
value[x]	Σ	1..1		Value held by characteristic
valueCodeableConcept			CodeableConcept
valueBoolean			boolean
valueQuantity			Quantity
valueRange			Range
valueReference			Reference(Any)
valueUri			uri
valueExpression			Expression
exclude	Σ	1..1	boolean	Group includes or excludes
description		0..1	markdown	Natural language description of the characteristic
method		0..*	CodeableConcept	Method for how the characteristic value was determined Binding: DefinitionMethod (example)
determinedBy[x]		0..1		Defines the characteristic
determinedByReference			Reference(Device | DeviceDefinition | DeviceMetric)
determinedByExpression			Expression
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
instances[x]	C	0..1		Number of occurrences meeting the characteristic Constraints: grp-1
instancesUnsignedInt			unsignedInt
instancesRange			Range
duration[x]		0..1		Length of time in which the characteristic is met
durationDuration			Duration
durationRange			Range
period		0..1	Period	Period over which characteristic is tested
timing		0..*	RelativeTime	Timing in which the characteristic is determined
characteristic:population	Σ	0..1	BackboneElement	Include / Exclude group members by Trait
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: population
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Population)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
description		0..1	markdown	Natural language description of the characteristic
method		0..*	CodeableConcept	Method for how the characteristic value was determined Binding: DefinitionMethod (example)
determinedBy[x]		0..1		Defines the characteristic
determinedByReference			Reference(Device | DeviceDefinition | DeviceMetric)
determinedByExpression			Expression
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
instances[x]	C	0..1		Number of occurrences meeting the characteristic Constraints: grp-1
instancesUnsignedInt			unsignedInt
instancesRange			Range
duration[x]		0..1		Length of time in which the characteristic is met
durationDuration			Duration
durationRange			Range
period		0..1	Period	Period over which characteristic is tested
timing		0..*	RelativeTime	Timing in which the characteristic is determined
characteristic:intervention	Σ	0..1	BackboneElement	Include / Exclude group members by Trait
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: intervention
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Intervention)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
description		0..1	markdown	Natural language description of the characteristic
method		0..*	CodeableConcept	Method for how the characteristic value was determined Binding: DefinitionMethod (example)
determinedBy[x]		0..1		Defines the characteristic
determinedByReference			Reference(Device | DeviceDefinition | DeviceMetric)
determinedByExpression			Expression
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
instances[x]	C	0..1		Number of occurrences meeting the characteristic Constraints: grp-1
instancesUnsignedInt			unsignedInt
instancesRange			Range
duration[x]		0..1		Length of time in which the characteristic is met
durationDuration			Duration
durationRange			Range
period		0..1	Period	Period over which characteristic is tested
timing		0..*	RelativeTime	Timing in which the characteristic is determined
characteristic:comparator	Σ	0..1	BackboneElement	Include / Exclude group members by Trait
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: comparator
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Comparator)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
description		0..1	markdown	Natural language description of the characteristic
method		0..*	CodeableConcept	Method for how the characteristic value was determined Binding: DefinitionMethod (example)
determinedBy[x]		0..1		Defines the characteristic
determinedByReference			Reference(Device | DeviceDefinition | DeviceMetric)
determinedByExpression			Expression
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
instances[x]	C	0..1		Number of occurrences meeting the characteristic Constraints: grp-1
instancesUnsignedInt			unsignedInt
instancesRange			Range
duration[x]		0..1		Length of time in which the characteristic is met
durationDuration			Duration
durationRange			Range
period		0..1	Period	Period over which characteristic is tested
timing		0..*	RelativeTime	Timing in which the characteristic is determined
characteristic:outcome	Σ	0..*	BackboneElement	Include / Exclude group members by Trait
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: outcome
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Outcome)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
description		0..1	markdown	Natural language description of the characteristic
method		0..*	CodeableConcept	Method for how the characteristic value was determined Binding: DefinitionMethod (example)
determinedBy[x]		0..1		Defines the characteristic
determinedByReference			Reference(Device | DeviceDefinition | DeviceMetric)
determinedByExpression			Expression
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
instances[x]	C	0..1		Number of occurrences meeting the characteristic Constraints: grp-1
instancesUnsignedInt			unsignedInt
instancesRange			Range
duration[x]		0..1		Length of time in which the characteristic is met
durationDuration			Duration
durationRange			Range
period		0..1	Period	Period over which characteristic is tested
timing		0..*	RelativeTime	Timing in which the characteristic is determined
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Group.language	Base	required	All Languages	📍6.0.0-ballot3	FHIR Std.
Group.versionAlgorithm[x]	Base	extensible	Version Algorithm	📍6.0.0-ballot3	FHIR Std.
Group.status	Base	required	PublicationStatus	📍6.0.0-ballot3	FHIR Std.
Group.type	Base	required	Group Type	📍6.0.0-ballot3	FHIR Std.
Group.membership	Base	required	Group Membership Basis	📍6.0.0-ballot3	FHIR Std.
Group.code	Base	extensible	Group Code	📍6.0.0-ballot3	FHIR Std.
Group.combinationMethod	Base	required	Group Characteristic Combination	📍6.0.0-ballot3	FHIR Std.
Group.characteristic.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic.​method	Base	example	Definition Method	📍6.0.0-ballot3	FHIR Std.
Group.characteristic.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:population.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:population.​method	Base	example	Definition Method	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:population.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:intervention.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:intervention.​method	Base	example	Definition Method	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:intervention.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:comparator.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:comparator.​method	Base	example	Definition Method	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:comparator.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:outcome.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:outcome.​method	Base	example	Definition Method	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:outcome.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.member.involvement	Base	example	Group Involvement	📍6.0.0-ballot3	FHIR Std.

Constraints

Id	Grade	Path(s)	Description	Expression
cnl-1	warning	Group.url	URL should not contain | or # - these characters make processing canonical references problematic	exists() implies matches('^[^|# ]+$')
cnl-2	error	Group	Group.type SHALL be defined if Group.membership is either 'definitional' or 'enumerated'	Group.type.exists() or (Group.membership = 'conceptual')
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children	hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both	extension.exists() != value.exists()
grp-1	error	Group.characteristic.instances[x], Group.characteristic:population.instances[x], Group.characteristic:intervention.instances[x], Group.characteristic:comparator.instances[x], Group.characteristic:outcome.instances[x]	Ranges have to be positive	($this is Range) implies ((low.empty() or ((low.code.exists() or low.value.empty()) and (low.system.empty() or low.system = %ucum) and (low.code.empty() or low.code = '1') and (low.value.empty() or low.value.hasValue().not() or low.value.toString().contains('.').not()) and (low.value.empty() or low.value.hasValue().not() or low.value >= 0))) and (high.empty() or ((high.code.exists() or high.value.empty()) and (high.system.empty() or high.system = %ucum) and (high.code.empty() or high.code = '1') and (high.value.empty() or high.value.hasValue().not() or high.value.toString().contains('.').not()) and (high.value.empty() or high.value.hasValue().not() or high.value >= 0))))

Key Elements View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Group	C	0..*	ConceptualCohortDefinition	Group of multiple entities Interfaces Implemented: CanonicalResource Constraints: cnl-2
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
contained		0..*	Resource	Contained, inline Resources
Slices for extension				Content/Rules for all slices
extension:author		0..*	ContactDetail	Who authored the artifact URL: http://hl7.org/fhir/StructureDefinition/artifact-author
extension:recorder		0..*	ContactDetail	Who entered the data URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/artifact-recorder
extension:citeAs		0..1	markdown	Citation for this Resource URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/cite-as
extension:relatesTo		0..*	(Complex)	Related artifact URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to
extension:RelatesToWithQuotation		0..*	(Complex)	Related artifact with quoted portion URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to-with-quotation
extension:characteristicExpression		0..1	Expression	Criteria for group membership URL: http://hl7.org/fhir/StructureDefinition/characteristicExpression
extension:publicationStatus		0..1	CodeableConcept	Publication status URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/artifact-publication-status Binding: Cited Artifact Status Type (preferred)
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored
status	?!Σ	0..1	code	draft | active | retired | unknown Binding: PublicationStatus (required): The lifecycle status of an artifact.
membership	Σ	1..1	code	definitional | conceptual | enumerated Binding: GroupMembershipBasis (required): The basis for membership in a group Required Pattern: conceptual
code	Σ	0..1	CodeableConcept	Use of the Group (and by implication, kind of members) Binding: GroupCode (extensible): A code that describes the kind of group, which usually dictates what kind if entities can be in the group. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: pico-question
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
combinationMethod	?!Σ	0..1	code	all-of | any-of | at-least | at-most | except-subset Binding: GroupCharacteristicCombination (required) Required Pattern: all-of
Slices for characteristic	Σ	0..*	BackboneElement	Include / Exclude group members by Trait Slice: Unordered, Open by value:code
characteristic:All Slices				Content/Rules for all slices
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc.
value[x]	Σ	1..1		Value held by characteristic
valueCodeableConcept			CodeableConcept
valueBoolean			boolean
valueQuantity			Quantity
valueRange			Range
valueReference			Reference(Any)
valueUri			uri
valueExpression			Expression
exclude	Σ	1..1	boolean	Group includes or excludes
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
characteristic:population	Σ	0..1	BackboneElement	Include / Exclude group members by Trait
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: population
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Population)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
characteristic:intervention	Σ	0..1	BackboneElement	Include / Exclude group members by Trait
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: intervention
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Intervention)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
characteristic:comparator	Σ	0..1	BackboneElement	Include / Exclude group members by Trait
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: comparator
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Comparator)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
characteristic:outcome	Σ	0..*	BackboneElement	Include / Exclude group members by Trait
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: outcome
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Outcome)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Group.status	Base	required	PublicationStatus	📍6.0.0-ballot3	FHIR Std.
Group.membership	Base	required	Group Membership Basis	📍6.0.0-ballot3	FHIR Std.
Group.code	Base	extensible	Group Code	📍6.0.0-ballot3	FHIR Std.
Group.combinationMethod	Base	required	Group Characteristic Combination	📍6.0.0-ballot3	FHIR Std.
Group.characteristic.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:population.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:population.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:intervention.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:intervention.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:comparator.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:comparator.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:outcome.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:outcome.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.

Constraints

Id	Grade	Path(s)	Description	Expression
cnl-2	error	Group	Group.type SHALL be defined if Group.membership is either 'definitional' or 'enumerated'	Group.type.exists() or (Group.membership = 'conceptual')
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()

Differential View

This structure is derived from ConceptualCohortDefinition

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Group		0..*	ConceptualCohortDefinition	Group of multiple entities Interfaces Implemented: CanonicalResource
code		0..1	CodeableConcept	Use of the Group (and by implication, kind of members) Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
code		1..1	code	Symbol in syntax defined by the system Fixed Value: pico-question
combinationMethod		0..1	code	all-of | any-of | at-least | at-most | except-subset Required Pattern: all-of
Slices for characteristic		0..*	BackboneElement	Include / Exclude group members by Trait Slice: Unordered, Open by value:code
characteristic:population		0..1	BackboneElement	Include / Exclude group members by Trait
code		1..1	CodeableConcept	Kind of characteristic Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
code		1..1	code	Symbol in syntax defined by the system Fixed Value: population
Slices for value[x]		1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference		0..1	Reference(Conceptual Cohort Definition Population)	Value held by characteristic
characteristic:intervention		0..1	BackboneElement	Include / Exclude group members by Trait
code		1..1	CodeableConcept	Kind of characteristic Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
code		1..1	code	Symbol in syntax defined by the system Fixed Value: intervention
Slices for value[x]		1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference		0..1	Reference(Conceptual Cohort Definition Intervention)	Value held by characteristic
characteristic:comparator		0..1	BackboneElement	Include / Exclude group members by Trait
code		1..1	CodeableConcept	Kind of characteristic Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
code		1..1	code	Symbol in syntax defined by the system Fixed Value: comparator
Slices for value[x]		1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference		0..1	Reference(Conceptual Cohort Definition Comparator)	Value held by characteristic
characteristic:outcome		0..*	BackboneElement	Include / Exclude group members by Trait
code		1..1	CodeableConcept	Kind of characteristic Required Pattern: At least the following
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
code		1..1	code	Symbol in syntax defined by the system Fixed Value: outcome
Slices for value[x]		1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference		0..1	Reference(Conceptual Cohort Definition Outcome)	Value held by characteristic
Documentation for this format

Snapshot View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
Group	C	0..*	ConceptualCohortDefinition	Group of multiple entities Interfaces Implemented: CanonicalResource Constraints: cnl-2
id	Σ	0..1	id	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: AllLanguages (required): IETF language tag for a human language Additional Bindings Purpose CommonLanguages Starter
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
contained		0..*	Resource	Contained, inline Resources
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
extension:author		0..*	ContactDetail	Who authored the artifact URL: http://hl7.org/fhir/StructureDefinition/artifact-author
extension:recorder		0..*	ContactDetail	Who entered the data URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/artifact-recorder
extension:citeAs		0..1	markdown	Citation for this Resource URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/cite-as
extension:relatesTo		0..*	(Complex)	Related artifact URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to
extension:RelatesToWithQuotation		0..*	(Complex)	Related artifact with quoted portion URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/relates-to-with-quotation
extension:characteristicExpression		0..1	Expression	Criteria for group membership URL: http://hl7.org/fhir/StructureDefinition/characteristicExpression
extension:publicationStatus		0..1	CodeableConcept	Publication status URL: http://hl7.org/fhir/uv/ebm/StructureDefinition/artifact-publication-status Binding: Cited Artifact Status Type (preferred)
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored
url	ΣC	0..1	uri	Canonical identifier for this Group, represented as an absolute URI (globally unique) Constraints: cnl-1
identifier	Σ	0..*	Identifier	Business Identifier for this Group
version	Σ	0..1	string	Business version of the Group
versionAlgorithm[x]	Σ	0..1		How to compare versions Binding: VersionAlgorithm (extensible)
versionAlgorithmString			string
versionAlgorithmCoding			Coding
name	Σ	0..1	string	Label for Group
title	Σ	0..1	string	Name for this Group (human friendly)
status	?!Σ	0..1	code	draft | active | retired | unknown Binding: PublicationStatus (required): The lifecycle status of an artifact.
experimental	Σ	0..1	boolean	For testing only - never for real usage
date	Σ	0..1	dateTime	Date last changed
publisher	Σ	0..1	string	Name of the publisher/steward (organization or individual)
contact	Σ	0..*	ContactDetail	Contact details for the publisher
description		0..1	markdown	Natural language description of the group
useContext	Σ	0..*	UsageContext	The context that the content is intended to support
purpose		0..1	markdown	Why this Group is defined
copyright		0..1	markdown	Use and/or publishing restrictions
copyrightLabel		0..1	string	Copyright holder and year(s)
type	Σ	0..1	code	person | animal | practitioner | device | careteam | healthcareservice | location | organization | relatedperson | specimen | medication | substance | biologicallyDerivedProduct | nutritionProduct Binding: GroupType (required): Types of resources that are part of group.
membership	Σ	1..1	code	definitional | conceptual | enumerated Binding: GroupMembershipBasis (required): The basis for membership in a group Required Pattern: conceptual
code	Σ	0..1	CodeableConcept	Use of the Group (and by implication, kind of members) Binding: GroupCode (extensible): A code that describes the kind of group, which usually dictates what kind if entities can be in the group. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: pico-question
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
managingEntity	Σ	0..1	Reference(Organization | RelatedPerson | Practitioner | PractitionerRole)	Entity that is the custodian of the Group's definition
combinationMethod	?!Σ	0..1	code	all-of | any-of | at-least | at-most | except-subset Binding: GroupCharacteristicCombination (required) Required Pattern: all-of
combinationThreshold		0..1	positiveInt	Provides the value of "n" when "at-least" or "at-most" codes are used
Slices for characteristic	Σ	0..*	BackboneElement	Include / Exclude group members by Trait Slice: Unordered, Open by value:code
characteristic:All Slices				Content/Rules for all slices
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc.
value[x]	Σ	1..1		Value held by characteristic
valueCodeableConcept			CodeableConcept
valueBoolean			boolean
valueQuantity			Quantity
valueRange			Range
valueReference			Reference(Any)
valueUri			uri
valueExpression			Expression
exclude	Σ	1..1	boolean	Group includes or excludes
description		0..1	markdown	Natural language description of the characteristic
method		0..*	CodeableConcept	Method for how the characteristic value was determined Binding: DefinitionMethod (example)
determinedBy[x]		0..1		Defines the characteristic
determinedByReference			Reference(Device | DeviceDefinition | DeviceMetric)
determinedByExpression			Expression
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
instances[x]	C	0..1		Number of occurrences meeting the characteristic Constraints: grp-1
instancesUnsignedInt			unsignedInt
instancesRange			Range
duration[x]		0..1		Length of time in which the characteristic is met
durationDuration			Duration
durationRange			Range
period		0..1	Period	Period over which characteristic is tested
timing		0..*	RelativeTime	Timing in which the characteristic is determined
characteristic:population	Σ	0..1	BackboneElement	Include / Exclude group members by Trait
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: population
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Population)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
description		0..1	markdown	Natural language description of the characteristic
method		0..*	CodeableConcept	Method for how the characteristic value was determined Binding: DefinitionMethod (example)
determinedBy[x]		0..1		Defines the characteristic
determinedByReference			Reference(Device | DeviceDefinition | DeviceMetric)
determinedByExpression			Expression
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
instances[x]	C	0..1		Number of occurrences meeting the characteristic Constraints: grp-1
instancesUnsignedInt			unsignedInt
instancesRange			Range
duration[x]		0..1		Length of time in which the characteristic is met
durationDuration			Duration
durationRange			Range
period		0..1	Period	Period over which characteristic is tested
timing		0..*	RelativeTime	Timing in which the characteristic is determined
characteristic:intervention	Σ	0..1	BackboneElement	Include / Exclude group members by Trait
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: intervention
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Intervention)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
description		0..1	markdown	Natural language description of the characteristic
method		0..*	CodeableConcept	Method for how the characteristic value was determined Binding: DefinitionMethod (example)
determinedBy[x]		0..1		Defines the characteristic
determinedByReference			Reference(Device | DeviceDefinition | DeviceMetric)
determinedByExpression			Expression
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
instances[x]	C	0..1		Number of occurrences meeting the characteristic Constraints: grp-1
instancesUnsignedInt			unsignedInt
instancesRange			Range
duration[x]		0..1		Length of time in which the characteristic is met
durationDuration			Duration
durationRange			Range
period		0..1	Period	Period over which characteristic is tested
timing		0..*	RelativeTime	Timing in which the characteristic is determined
characteristic:comparator	Σ	0..1	BackboneElement	Include / Exclude group members by Trait
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: comparator
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Comparator)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
description		0..1	markdown	Natural language description of the characteristic
method		0..*	CodeableConcept	Method for how the characteristic value was determined Binding: DefinitionMethod (example)
determinedBy[x]		0..1		Defines the characteristic
determinedByReference			Reference(Device | DeviceDefinition | DeviceMetric)
determinedByExpression			Expression
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
instances[x]	C	0..1		Number of occurrences meeting the characteristic Constraints: grp-1
instancesUnsignedInt			unsignedInt
instancesRange			Range
duration[x]		0..1		Length of time in which the characteristic is met
durationDuration			Duration
durationRange			Range
period		0..1	Period	Period over which characteristic is tested
timing		0..*	RelativeTime	Timing in which the characteristic is determined
characteristic:outcome	Σ	0..*	BackboneElement	Include / Exclude group members by Trait
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	CodeableConcept	Kind of characteristic Binding: ExampleCharacteristicCodes (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc. Required Pattern: At least the following
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
coding		1..*	Coding	Code defined by a terminology system Fixed Value: (Complex)
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
system		1..1	uri	Identity of the terminology system Fixed Value: http://fhir.awmf.org/awmf.ig/CodeSystem/cs-pico
version		0..1	string	Version of the system - if relevant
code		1..1	code	Symbol in syntax defined by the system Fixed Value: outcome
display		0..1	string	Representation defined by the system
userSelected		0..1	boolean	If this coding was chosen directly by the user
text		0..1	string	Plain text representation of the concept
Slices for value[x]	Σ	1..1		Value held by characteristic Slice: Unordered, Open by type:$this
valueCodeableConcept			CodeableConcept
valueReference			Reference(Any)
valueExpression			Expression
value[x]:valueReference	Σ	0..1	Reference(Conceptual Cohort Definition Outcome)	Value held by characteristic
exclude	Σ	1..1	boolean	Group includes or excludes
description		0..1	markdown	Natural language description of the characteristic
method		0..*	CodeableConcept	Method for how the characteristic value was determined Binding: DefinitionMethod (example)
determinedBy[x]		0..1		Defines the characteristic
determinedByReference			Reference(Device | DeviceDefinition | DeviceMetric)
determinedByExpression			Expression
offset	?!Σ	0..1	CodeableConcept	Reference point for comparison Binding: CharacteristicOffset (example)
instances[x]	C	0..1		Number of occurrences meeting the characteristic Constraints: grp-1
instancesUnsignedInt			unsignedInt
instancesRange			Range
duration[x]		0..1		Length of time in which the characteristic is met
durationDuration			Duration
durationRange			Range
period		0..1	Period	Period over which characteristic is tested
timing		0..*	RelativeTime	Timing in which the characteristic is determined
Documentation for this format

Terminology Bindings

Path	Status	Usage	ValueSet	Version	Source
Group.language	Base	required	All Languages	📍6.0.0-ballot3	FHIR Std.
Group.versionAlgorithm[x]	Base	extensible	Version Algorithm	📍6.0.0-ballot3	FHIR Std.
Group.status	Base	required	PublicationStatus	📍6.0.0-ballot3	FHIR Std.
Group.type	Base	required	Group Type	📍6.0.0-ballot3	FHIR Std.
Group.membership	Base	required	Group Membership Basis	📍6.0.0-ballot3	FHIR Std.
Group.code	Base	extensible	Group Code	📍6.0.0-ballot3	FHIR Std.
Group.combinationMethod	Base	required	Group Characteristic Combination	📍6.0.0-ballot3	FHIR Std.
Group.characteristic.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic.​method	Base	example	Definition Method	📍6.0.0-ballot3	FHIR Std.
Group.characteristic.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:population.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:population.​method	Base	example	Definition Method	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:population.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:intervention.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:intervention.​method	Base	example	Definition Method	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:intervention.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:comparator.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:comparator.​method	Base	example	Definition Method	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:comparator.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:outcome.​code	Base	example	Example Characterist ic Codes	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:outcome.​method	Base	example	Definition Method	📍6.0.0-ballot3	FHIR Std.
Group.characteristic:outcome.​offset	Base	example	Characteristic Offset	📍6.0.0-ballot3	FHIR Std.
Group.member.involvement	Base	example	Group Involvement	📍6.0.0-ballot3	FHIR Std.

Constraints

Id	Grade	Path(s)	Description	Expression
cnl-1	warning	Group.url	URL should not contain | or # - these characters make processing canonical references problematic	exists() implies matches('^[^|# ]+$')
cnl-2	error	Group	Group.type SHALL be defined if Group.membership is either 'definitional' or 'enumerated'	Group.type.exists() or (Group.membership = 'conceptual')
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children	hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both	extension.exists() != value.exists()
grp-1	error	Group.characteristic.instances[x], Group.characteristic:population.instances[x], Group.characteristic:intervention.instances[x], Group.characteristic:comparator.instances[x], Group.characteristic:outcome.instances[x]	Ranges have to be positive	($this is Range) implies ((low.empty() or ((low.code.exists() or low.value.empty()) and (low.system.empty() or low.system = %ucum) and (low.code.empty() or low.code = '1') and (low.value.empty() or low.value.hasValue().not() or low.value.toString().contains('.').not()) and (low.value.empty() or low.value.hasValue().not() or low.value >= 0))) and (high.empty() or ((high.code.exists() or high.value.empty()) and (high.system.empty() or high.system = %ucum) and (high.code.empty() or high.code = '1') and (high.value.empty() or high.value.hasValue().not() or high.value.toString().contains('.').not()) and (high.value.empty() or high.value.hasValue().not() or high.value >= 0))))

This structure is derived from ConceptualCohortDefinition

Summary

Structures

This structure refers to these other structures:

• Conceptual Cohort Definition Population (http://fhir.awmf.org/awmf.ig/StructureDefinition/conceptual-cohort-definition-population)
• Conceptual Cohort Definition Intervention (http://fhir.awmf.org/awmf.ig/StructureDefinition/conceptual-cohort-definition-intervention)
• Conceptual Cohort Definition Comparator (http://fhir.awmf.org/awmf.ig/StructureDefinition/conceptual-cohort-definition-comparator)
• Conceptual Cohort Definition Outcome (http://fhir.awmf.org/awmf.ig/StructureDefinition/conceptual-cohort-definition-outcome)

Slices

This structure defines the following Slices:

• The element 1 is sliced based on the value of Group.characteristic
• The element 1 is sliced based on the value of Group.characteristic.value[x]