Group

Property	Value
Publisher
Name	Group
URL	http://hl7.org/fhir/StructureDefinition/Group
Status	draft
Description
Abstract	false

Structure

Path	Cardinality	Type	Description
Group	0..*	Group	Represents a defined collection of entities that may be discussed or acted upon collectively but which are not expected to act collectively, and are not formally or legally recognized; i.e. a collection of entities that isn't an Organization.
Group.id	0..1	http://hl7.org/fhirpath/System.String	The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.
Group.meta	0..1	Meta	The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.
Group.implicitRules	0..1	uri	A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.
Group.language	0..1	code	The base language in which the resource is written.
Group.text	0..1	Narrative	A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.
Group.contained	0..*	Resource	These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.
Group.extension	0..*	Extension	May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Group.modifierExtension	0..*	Extension	May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Group.identifier	0..*	Identifier	A unique business identifier for this group.
Group.active	0..1	boolean	Indicates whether the record for the group is available for use or is merely being retained for historical purposes.
Group.type	1..1	code	Identifies the broad classification of the kind of resources the group includes.
Group.actual	1..1	boolean	If true, indicates that the resource refers to a specific group of real individuals. If false, the group defines a set of intended individuals.
Group.code	0..1	CodeableConcept	Provides a specific type of resource the group includes; e.g. "cow", "syringe", etc.
Group.name	0..1	string	A label assigned to the group for human identification and communication.
Group.quantity	0..1	unsignedInt	A count of the number of resource instances that are part of the group.
Group.managingEntity	0..1	Reference	Entity responsible for defining and maintaining Group characteristics and/or registered members.
Group.characteristic	0..*	BackboneElement	Identifies traits whose presence r absence is shared by members of the group.
Group.characteristic.id	0..1	http://hl7.org/fhirpath/System.String	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Group.characteristic.extension	0..*	Extension	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Group.characteristic.modifierExtension	0..*	Extension	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Group.characteristic.code	1..1	CodeableConcept	A code that identifies the kind of trait being asserted.
Group.characteristic.value[x]	1..1	CodeableConcept	The value of the trait that holds (or does not hold - see 'exclude') for members of the group.
Group.characteristic.exclude	1..1	boolean	If true, indicates the characteristic is one that is NOT held by members of the group.
Group.characteristic.period	0..1	Period	The period over which the characteristic is tested; e.g. the patient had an operation during the month of June.
Group.member	0..*	BackboneElement	Identifies the resource instances that are members of the group.
Group.member.id	0..1	http://hl7.org/fhirpath/System.String	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Group.member.extension	0..*	Extension	May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
Group.member.modifierExtension	0..*	Extension	May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).
Group.member.entity	1..1	Reference	A reference to the entity that is a member of the group. Must be consistent with Group.type. If the entity is another group, then the type must be the same.
Group.member.period	0..1	Period	The period that the member was in the group, if known.
Group.member.inactive	0..1	boolean	A flag to indicate that the member is no longer in the group, but previously may have been a member.

Search Parameters

Name	Type	Description	Expression
_text	string	Search on the narrative of the resource
_content	string	Search on the entire content of the resource
_filter	token	Filter search parameter which supports a more sophisticated grammar for searching. See documentation for further details
_has	string	Provides limited support for reverse chaining - that is, selecting resources based on the properties of resources that refer to them (instead of chaining where resources can be selected based on the properties of resources that they refer to). See the FHIR search page for further documentation
_id	token	Logical id of this artifact	Resource.id
_lastUpdated	date	When the resource version last changed	Resource.meta.lastUpdated
_list	string	All resources in nominated list (by id, Type/id, url or one of the magic List types)
_profile	uri	Profiles this resource claims to conform to	Resource.meta.profile
_query	token	A custom search profile that describes a specific defined query operation
_security	token	Security Labels applied to this resource	Resource.meta.security
_source	uri	Identifies where the resource comes from	Resource.meta.source
_tag	token	Tags applied to this resource	Resource.meta.tag
_text	string	Search on the narrative text (html) of the resource
_type	token	Used when a search is performed in a context which doesn't limit the search to indicate which types are being searched. See the FHIR search page for further discussion
actual	token	Descriptive or actual	Group.actual
characteristic	token	Kind of characteristic	Group.characteristic.code
code	token	The kind of resources contained	Group.code
exclude	token	Group includes or excludes	Group.characteristic.exclude
identifier	token	Unique id	Group.identifier
managing-entity	reference	Entity that is the custodian of the Group's definition	Group.managingEntity
member	reference	Reference to the group member	Group.member.entity
type	token	The type of resources the group contains	Group.type
value	token	Value held by characteristic	(Group.characteristic.value.ofType(CodeableConcept)) / (Group.characteristic.value.ofType(boolean))
characteristic-value	composite	A composite of both characteristic and value	Group.characteristic