Key Guidelines

Study Family describes a group of Participants that are related. This is not an expression of all individuals in a “family”, but a tool to identify “family members of interest” that were studied. For example, a family trio in a rare disease study does not exclude the existence of other siblings. Family Studies do not require much detail, but there are often attributes of those families that may be of use to researchers.

Added Profile Restrictions

In order to ensure that our resources are interoperable across studies, we have employed a number of restrictions that should make consuming Patient resources more consistent.

• ID should be a globally unique identifier associated with the family.

Recommended Practices

TODO: Write Recommended Practices

FHIR Mappings

The following fields from the shared data model are to be mapped into the NCPI Participant as shown below:

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

This structure is derived from Group

Name	Flags	Card.	Type	Description & Constraints
Group		0..*	Group	Group of multiple entities
id		1..1	id	ParticipantID - Unique participant identifier. System identifier used for internal references.
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
family-type		0..1	CodeableConcept	Describes the 'type' of study family, eg, trio. URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-type Binding: Family Types Codes (extensible)
description		0..1	markdown	Free text describing the study family, such as potential inheritance or details about consanguinity URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/description
consanguinity		0..1	CodeableConcept	Is there known or suspected consanguinity in this study family? URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/consanguinity Binding: Consanguinity Value Codes (extensible)
study-family-focus		0..1	CodeableConcept	What is this study family investigating? EG, a specific condition URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/study-family-focus
identifier		0..*	Identifier	External IDs for this participant. Requires scoping.
member		1..*	BackboneElement	Who or what is in group
entity		1..1	Reference(NCPI Participant)	The participant we are describing.
Slices for extension				Content/Rules for all slices
family-role		0..1	CodeableConcept	The role this individual has in the family, specifically with respect to a proband or index participant URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-role Binding: FamilyMember (extensible)
Documentation for this format

Name	Flags	Card.	Type	Description & Constraints
Group	C	0..*	Group	Group of multiple entities grp-1: Can only have members if group is "actual"
id	Σ	1..1	id	ParticipantID - Unique participant identifier. System identifier used for internal references.
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
family-type		0..1	CodeableConcept	Describes the 'type' of study family, eg, trio. URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-type Binding: Family Types Codes (extensible)
description		0..1	markdown	Free text describing the study family, such as potential inheritance or details about consanguinity URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/description
consanguinity		0..1	CodeableConcept	Is there known or suspected consanguinity in this study family? URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/consanguinity Binding: Consanguinity Value Codes (extensible)
study-family-focus		0..1	CodeableConcept	What is this study family investigating? EG, a specific condition URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/study-family-focus
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier	Σ	0..*	Identifier	External IDs for this participant. Requires scoping.
type	Σ	1..1	code	person | animal | practitioner | device | medication | substance Binding: GroupType (required): Types of resources that are part of group.
actual	ΣC	1..1	boolean	Descriptive or actual
member	C	1..*	BackboneElement	Who or what is in group
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
entity		1..1	Reference(NCPI Participant)	The participant we are describing.
Slices for extension				Content/Rules for all slices
family-role		0..1	CodeableConcept	The role this individual has in the family, specifically with respect to a proband or index participant URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-role Binding: FamilyMember (extensible)
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
Group.type	required	GroupType http://hl7.org/fhir/ValueSet/group-type|4.3.0 from the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
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.exists() and ('#'+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(uri) = '#').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)

Name	Flags	Card.	Type	Description & Constraints
Group	C	0..*	Group	Group of multiple entities grp-1: Can only have members if group is "actual"
id	Σ	1..1	id	ParticipantID - Unique participant identifier. System identifier used for internal references.
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: CommonLanguages (preferred): IETF language tag Additional Bindings Purpose AllLanguages Max Binding
text		0..1	Narrative	Text summary of the resource, for human interpretation
contained		0..*	Resource	Contained, inline Resources dom-r4b: Containing new R4B resources within R4 resources may cause interoperability issues if instances are shared with R4 systems
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
family-type		0..1	CodeableConcept	Describes the 'type' of study family, eg, trio. URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-type Binding: Family Types Codes (extensible)
description		0..1	markdown	Free text describing the study family, such as potential inheritance or details about consanguinity URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/description
consanguinity		0..1	CodeableConcept	Is there known or suspected consanguinity in this study family? URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/consanguinity Binding: Consanguinity Value Codes (extensible)
study-family-focus		0..1	CodeableConcept	What is this study family investigating? EG, a specific condition URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/study-family-focus
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier	Σ	0..*	Identifier	External IDs for this participant. Requires scoping.
active	Σ	0..1	boolean	Whether this group's record is in active use
type	Σ	1..1	code	person | animal | practitioner | device | medication | substance Binding: GroupType (required): Types of resources that are part of group.
actual	ΣC	1..1	boolean	Descriptive or actual
code	Σ	0..1	CodeableConcept	Kind of Group members Binding Description (No ValueSet): (example): Kind of particular resource; e.g. cow, syringe, lake, etc.
name	Σ	0..1	string	Label for Group
quantity	Σ	0..1	unsignedInt	Number of members
managingEntity	Σ	0..1	Reference(Organization | RelatedPerson | Practitioner | PractitionerRole)	Entity that is the custodian of the Group's definition
characteristic		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		1..1	CodeableConcept	Kind of characteristic Binding Description (No ValueSet): (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc.
value[x]		1..1		Value held by characteristic Binding Description (No ValueSet): (example): Value of descriptive member characteristic; e.g. red, male, pneumonia, Caucasian, etc.
valueCodeableConcept			CodeableConcept
valueBoolean			boolean
valueQuantity			Quantity
valueRange			Range
valueReference			Reference(Any)
exclude		1..1	boolean	Group includes or excludes
period		0..1	Period	Period over which characteristic is tested
member	C	1..*	BackboneElement	Who or what is in group
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
entity		1..1	Reference(NCPI Participant)	The participant we are describing.
id		0..1	id	Unique id for inter-element referencing
Slices for extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
family-role		0..1	CodeableConcept	The role this individual has in the family, specifically with respect to a proband or index participant URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-role Binding: FamilyMember (extensible)
reference	ΣC	0..1	string	Literal reference, Relative, internal or absolute URL
type	Σ	0..1	uri	Type the reference refers to (e.g. "Patient") Binding: ResourceType (extensible)
identifier	Σ	0..1	Identifier	Logical reference, when literal reference is not known
display	Σ	0..1	string	Text alternative for the resource
period		0..1	Period	Period member belonged to the group
inactive		0..1	boolean	If member is no longer in group
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
Group.language	preferred	CommonLanguages Additional Bindings Purpose AllLanguages Max Binding http://hl7.org/fhir/ValueSet/languages from the FHIR Standard
Group.type	required	GroupType http://hl7.org/fhir/ValueSet/group-type|4.3.0 from the FHIR Standard
Group.code	example
Group.characteristic.code	example
Group.characteristic.value[x]	example
Group.member.entity.type	extensible	ResourceType http://hl7.org/fhir/ValueSet/resource-types from the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
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.exists() and ('#'+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(uri) = '#').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()
dom-r4b	warning	Group.contained	Containing new R4B resources within R4 resources may cause interoperability issues if instances are shared with R4 systems : ($this is Citation or $this is Evidence or $this is EvidenceReport or $this is EvidenceVariable or $this is MedicinalProductDefinition or $this is PackagedProductDefinition or $this is AdministrableProductDefinition or $this is Ingredient or $this is ClinicalUseDefinition or $this is RegulatedAuthorization or $this is SubstanceDefinition or $this is SubscriptionStatus or $this is SubscriptionTopic) implies (%resource is Citation or %resource is Evidence or %resource is EvidenceReport or %resource is EvidenceVariable or %resource is MedicinalProductDefinition or %resource is PackagedProductDefinition or %resource is AdministrableProductDefinition or %resource is Ingredient or %resource is ClinicalUseDefinition or %resource is RegulatedAuthorization or %resource is SubstanceDefinition or %resource is SubscriptionStatus or %resource is SubscriptionTopic)
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

Name	Flags	Card.	Type	Description & Constraints
Group		0..*	Group	Group of multiple entities
id		1..1	id	ParticipantID - Unique participant identifier. System identifier used for internal references.
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
family-type		0..1	CodeableConcept	Describes the 'type' of study family, eg, trio. URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-type Binding: Family Types Codes (extensible)
description		0..1	markdown	Free text describing the study family, such as potential inheritance or details about consanguinity URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/description
consanguinity		0..1	CodeableConcept	Is there known or suspected consanguinity in this study family? URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/consanguinity Binding: Consanguinity Value Codes (extensible)
study-family-focus		0..1	CodeableConcept	What is this study family investigating? EG, a specific condition URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/study-family-focus
identifier		0..*	Identifier	External IDs for this participant. Requires scoping.
member		1..*	BackboneElement	Who or what is in group
entity		1..1	Reference(NCPI Participant)	The participant we are describing.
Slices for extension				Content/Rules for all slices
family-role		0..1	CodeableConcept	The role this individual has in the family, specifically with respect to a proband or index participant URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-role Binding: FamilyMember (extensible)
Documentation for this format

Key Elements View

Name	Flags	Card.	Type	Description & Constraints
Group	C	0..*	Group	Group of multiple entities grp-1: Can only have members if group is "actual"
id	Σ	1..1	id	ParticipantID - Unique participant identifier. System identifier used for internal references.
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
family-type		0..1	CodeableConcept	Describes the 'type' of study family, eg, trio. URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-type Binding: Family Types Codes (extensible)
description		0..1	markdown	Free text describing the study family, such as potential inheritance or details about consanguinity URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/description
consanguinity		0..1	CodeableConcept	Is there known or suspected consanguinity in this study family? URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/consanguinity Binding: Consanguinity Value Codes (extensible)
study-family-focus		0..1	CodeableConcept	What is this study family investigating? EG, a specific condition URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/study-family-focus
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier	Σ	0..*	Identifier	External IDs for this participant. Requires scoping.
type	Σ	1..1	code	person | animal | practitioner | device | medication | substance Binding: GroupType (required): Types of resources that are part of group.
actual	ΣC	1..1	boolean	Descriptive or actual
member	C	1..*	BackboneElement	Who or what is in group
modifierExtension	?!Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
entity		1..1	Reference(NCPI Participant)	The participant we are describing.
Slices for extension				Content/Rules for all slices
family-role		0..1	CodeableConcept	The role this individual has in the family, specifically with respect to a proband or index participant URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-role Binding: FamilyMember (extensible)
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
Group.type	required	GroupType http://hl7.org/fhir/ValueSet/group-type|4.3.0 from the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
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.exists() and ('#'+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(uri) = '#').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)

Snapshot View

Name	Flags	Card.	Type	Description & Constraints
Group	C	0..*	Group	Group of multiple entities grp-1: Can only have members if group is "actual"
id	Σ	1..1	id	ParticipantID - Unique participant identifier. System identifier used for internal references.
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: CommonLanguages (preferred): IETF language tag Additional Bindings Purpose AllLanguages Max Binding
text		0..1	Narrative	Text summary of the resource, for human interpretation
contained		0..*	Resource	Contained, inline Resources dom-r4b: Containing new R4B resources within R4 resources may cause interoperability issues if instances are shared with R4 systems
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
family-type		0..1	CodeableConcept	Describes the 'type' of study family, eg, trio. URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-type Binding: Family Types Codes (extensible)
description		0..1	markdown	Free text describing the study family, such as potential inheritance or details about consanguinity URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/description
consanguinity		0..1	CodeableConcept	Is there known or suspected consanguinity in this study family? URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/consanguinity Binding: Consanguinity Value Codes (extensible)
study-family-focus		0..1	CodeableConcept	What is this study family investigating? EG, a specific condition URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/study-family-focus
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
identifier	Σ	0..*	Identifier	External IDs for this participant. Requires scoping.
active	Σ	0..1	boolean	Whether this group's record is in active use
type	Σ	1..1	code	person | animal | practitioner | device | medication | substance Binding: GroupType (required): Types of resources that are part of group.
actual	ΣC	1..1	boolean	Descriptive or actual
code	Σ	0..1	CodeableConcept	Kind of Group members Binding Description (No ValueSet): (example): Kind of particular resource; e.g. cow, syringe, lake, etc.
name	Σ	0..1	string	Label for Group
quantity	Σ	0..1	unsignedInt	Number of members
managingEntity	Σ	0..1	Reference(Organization | RelatedPerson | Practitioner | PractitionerRole)	Entity that is the custodian of the Group's definition
characteristic		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		1..1	CodeableConcept	Kind of characteristic Binding Description (No ValueSet): (example): List of characteristics used to describe group members; e.g. gender, age, owner, location, etc.
value[x]		1..1		Value held by characteristic Binding Description (No ValueSet): (example): Value of descriptive member characteristic; e.g. red, male, pneumonia, Caucasian, etc.
valueCodeableConcept			CodeableConcept
valueBoolean			boolean
valueQuantity			Quantity
valueRange			Range
valueReference			Reference(Any)
exclude		1..1	boolean	Group includes or excludes
period		0..1	Period	Period over which characteristic is tested
member	C	1..*	BackboneElement	Who or what is in group
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
entity		1..1	Reference(NCPI Participant)	The participant we are describing.
id		0..1	id	Unique id for inter-element referencing
Slices for extension		0..*	Extension	Additional content defined by implementations Slice: Unordered, Open by value:url
family-role		0..1	CodeableConcept	The role this individual has in the family, specifically with respect to a proband or index participant URL: https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-role Binding: FamilyMember (extensible)
reference	ΣC	0..1	string	Literal reference, Relative, internal or absolute URL
type	Σ	0..1	uri	Type the reference refers to (e.g. "Patient") Binding: ResourceType (extensible)
identifier	Σ	0..1	Identifier	Logical reference, when literal reference is not known
display	Σ	0..1	string	Text alternative for the resource
period		0..1	Period	Period member belonged to the group
inactive		0..1	boolean	If member is no longer in group
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
Group.language	preferred	CommonLanguages Additional Bindings Purpose AllLanguages Max Binding http://hl7.org/fhir/ValueSet/languages from the FHIR Standard
Group.type	required	GroupType http://hl7.org/fhir/ValueSet/group-type|4.3.0 from the FHIR Standard
Group.code	example
Group.characteristic.code	example
Group.characteristic.value[x]	example
Group.member.entity.type	extensible	ResourceType http://hl7.org/fhir/ValueSet/resource-types from the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
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.exists() and ('#'+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(uri) = '#').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()
dom-r4b	warning	Group.contained	Containing new R4B resources within R4 resources may cause interoperability issues if instances are shared with R4 systems : ($this is Citation or $this is Evidence or $this is EvidenceReport or $this is EvidenceVariable or $this is MedicinalProductDefinition or $this is PackagedProductDefinition or $this is AdministrableProductDefinition or $this is Ingredient or $this is ClinicalUseDefinition or $this is RegulatedAuthorization or $this is SubstanceDefinition or $this is SubscriptionStatus or $this is SubscriptionTopic) implies (%resource is Citation or %resource is Evidence or %resource is EvidenceReport or %resource is EvidenceVariable or %resource is MedicinalProductDefinition or %resource is PackagedProductDefinition or %resource is AdministrableProductDefinition or %resource is Ingredient or %resource is ClinicalUseDefinition or %resource is RegulatedAuthorization or %resource is SubstanceDefinition or %resource is SubscriptionStatus or %resource is SubscriptionTopic)
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: 2 elements

Structures

This structure refers to these other structures:

• NCPI Participant (https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/ncpi-participant)

Extensions

This structure refers to these extensions:

• https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-type
• https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/description
• https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/consanguinity
• https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/study-family-focus
• https://nih-ncpi.github.io/ncpi-fhir-ig-2/StructureDefinition/family-role