ExtensionGraphDefinition_Link_Target - Definitions - Extensions for Using Data Elements from FHIR R4 in FHIR R5 v0.1.0

Extensions for Using Data Elements from FHIR R4 in FHIR R5 - Downloaded Version null See the Directory of published versions

Extension: ExtensionGraphDefinition_Link_Target - Detailed Descriptions

Page standards status: Trial-use

Maturity Level: 0

Definitions for the ext-R4-GraphDefinition.lin.target extension.

Key Elements Table
Differential Elements Table
Snapshot Elements Table

Guidance on how to interpret the contents of this table can be foundhere

0. Extension
Definition	R4: `GraphDefinition.link.target` (new:BackboneElement) Optional Extension Element - found in all resources.
Short	R4: Potential target for the link (new)Optional Extensions Element
Comments	Element `GraphDefinition.link.target` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..*
Is Modifier	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
2. Extension.extension
Definition	An 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 managable, 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.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	10..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
4. Extension.extension:type
Slice Name	type
Definition	R4: `GraphDefinition.link.target.type` (new:code)
Short	R4: Type of resource this link refers to (new)Additional content defined by implementations
Comments	Element `GraphDefinition.link.target.type` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.type` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.type` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	10..1*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.type` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.type` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.type` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
6. Extension.extension:type.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`type`
8. Extension.extension:type.value[x]
Definition	Type of resource this link refers to. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Type of resource this link refers toValue of extension
Control	10..1 This element is affected by the following invariants: ext-1
Binding	The codes SHALL be taken from For codes, see R4ResourceTypesForR5 (0.1.0) (required to `http://hl7.org/fhir/uv/xver/ValueSet/R4-resource-types-for-R5\|0.1.0`) One of the resource types defined as part of this version of FHIR.
Type	code, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, string, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
10. Extension.extension:params
Slice Name	params
Definition	R4: `GraphDefinition.link.target.params` (new:string)
Short	R4: Criteria for reverse lookup (new)Additional content defined by implementations
Comments	Element `GraphDefinition.link.target.params` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.params` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.params` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element). At least one of the parameters must have the value {ref} which identifies the focus resource.
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.params` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.params` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.params` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
12. Extension.extension:params.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`params`
14. Extension.extension:params.value[x]
Definition	A set of parameters to look up. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Criteria for reverse lookupValue of extension
Comments	At least one of the parameters must have the value {ref} which identifies the focus resource.
Control	0..1 This element is affected by the following invariants: ext-1
Type	string, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, code, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
16. Extension.extension:profile
Slice Name	profile
Definition	R4: `GraphDefinition.link.target.profile` (new:canonical(StructureDefinition))
Short	R4: Profile for the target resource (new)Additional content defined by implementations
Comments	Element `GraphDefinition.link.target.profile` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.profile` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.profile` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.profile` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.profile` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.profile` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
18. Extension.extension:profile.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`profile`
20. Extension.extension:profile.value[x]
Definition	Profile for the target resource. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Profile for the target resourceValue of extension
Control	0..1 This element is affected by the following invariants: ext-1
Type	canonical(Cross-version Profile for R4.StructureDefinition for use in FHIR R5, StructureDefinition), date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, code, string, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
22. Extension.extension:compartment
Slice Name	compartment
Definition	R4: `GraphDefinition.link.target.compartment` (new:BackboneElement)
Short	R4: Compartment Consistency Rules (new)Additional content defined by implementations
Comments	Element `GraphDefinition.link.target.compartment` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.compartment` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.compartment` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.compartment` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
24. Extension.extension:compartment.extension
Definition	An 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 managable, 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.
Short	ExtensionAdditional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	30..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
26. Extension.extension:compartment.extension:use
Slice Name	use
Definition	R4: `GraphDefinition.link.target.compartment.use` (new:code)
Short	R4: condition \| requirement (new)Additional content defined by implementations
Comments	Element `GraphDefinition.link.target.compartment.use` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.use` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.use` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element). All conditional rules are evaluated; if they are true, then the rules are evaluated.
Control	10..1*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.compartment.use` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.use` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.use` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
28. Extension.extension:compartment.extension:use.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`use`
30. Extension.extension:compartment.extension:use.value[x]
Definition	Defines how the compartment rule is used - whether it it is used to test whether resources are subject to the rule, or whether it is a rule that must be followed. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	condition \| requirementValue of extension
Comments	All conditional rules are evaluated; if they are true, then the rules are evaluated.
Control	10..1 This element is affected by the following invariants: ext-1
Binding	The codes SHALL be taken from For codes, see GraphCompartmentUse (required to `http://hl7.org/fhir/ValueSet/graph-compartment-use\|5.0.0`) Defines how a compartment rule is used.
Type	code, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, string, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
32. Extension.extension:compartment.extension:code
Slice Name	code
Definition	R4: `GraphDefinition.link.target.compartment.code` (new:code)
Short	R4: Patient \| Encounter \| RelatedPerson \| Practitioner \| Device (new)Additional content defined by implementations
Comments	Element `GraphDefinition.link.target.compartment.code` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.code` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.code` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	10..1*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.compartment.code` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.code` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.code` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
34. Extension.extension:compartment.extension:code.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`code`
36. Extension.extension:compartment.extension:code.value[x]
Definition	Identifies the compartment. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Patient \| Encounter \| RelatedPerson \| Practitioner \| DeviceValue of extension
Control	10..1 This element is affected by the following invariants: ext-1
Binding	The codes SHALL be taken from For codes, see CompartmentType (required to `http://hl7.org/fhir/ValueSet/compartment-type\|5.0.0`) Identifies a compartment.
Type	code, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, string, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
38. Extension.extension:compartment.extension:rule
Slice Name	rule
Definition	R4: `GraphDefinition.link.target.compartment.rule` (new:code)
Short	R4: identical \| matching \| different \| custom (new)Additional content defined by implementations
Comments	Element `GraphDefinition.link.target.compartment.rule` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.rule` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.rule` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	10..1*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.compartment.rule` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.rule` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.rule` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
40. Extension.extension:compartment.extension:rule.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`rule`
42. Extension.extension:compartment.extension:rule.value[x]
Definition	identical \| matching \| different \| no-rule \| custom. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	identical \| matching \| different \| customValue of extension
Control	10..1 This element is affected by the following invariants: ext-1
Binding	The codes SHALL be taken from For codes, see GraphCompartmentRule (required to `http://hl7.org/fhir/ValueSet/graph-compartment-rule\|5.0.0`) How a compartment must be linked.
Type	code, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, string, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
44. Extension.extension:compartment.extension:expression
Slice Name	expression
Definition	R4: `GraphDefinition.link.target.compartment.expression` (new:string)
Short	R4: Custom rule, as a FHIRPath expression (new)Additional content defined by implementations
Comments	Element `GraphDefinition.link.target.compartment.expression` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.expression` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.expression` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.compartment.expression` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.expression` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.expression` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
46. Extension.extension:compartment.extension:expression.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`expression`
48. Extension.extension:compartment.extension:expression.value[x]
Definition	Custom rule, as a FHIRPath expression. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Custom rule, as a FHIRPath expressionValue of extension
Control	0..1 This element is affected by the following invariants: ext-1
Type	string, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, code, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
50. Extension.extension:compartment.extension:description
Slice Name	description
Definition	R4: `GraphDefinition.link.target.compartment.description` (new:string)
Short	R4: Documentation for FHIRPath expression (new)Additional content defined by implementations
Comments	Element `GraphDefinition.link.target.compartment.description` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.description` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.description` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.compartment.description` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.description` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.description` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
52. Extension.extension:compartment.extension:description.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`description`
54. Extension.extension:compartment.extension:description.value[x]
Definition	Documentation for FHIRPath expression. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Documentation for FHIRPath expressionValue of extension
Control	0..1 This element is affected by the following invariants: ext-1
Type	string, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, code, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
56. Extension.extension:compartment.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`compartment`
58. Extension.extension:compartment.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..01 This element is affected by the following invariants: ext-1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, integer64, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Availability, ExtendedContactDetail, Dosage, Meta
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
60. Extension.extension:link
Slice Name	link
Definition	R4: `GraphDefinition.link.target.link` (new:GraphDefinition.link)
Short	R4: Additional links from target resource (new)Additional content defined by implementations
Comments	Element `GraphDefinition.link.target.link` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.link` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.link` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.link` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.link` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.link` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count())) ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
62. Extension.extension:link.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/4.0/StructureDefinition/extension-GraphDefinition.link`
64. Extension.extension:link.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..01 This element is affected by the following invariants: ext-1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, integer64, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Availability, ExtendedContactDetail, Dosage, Meta
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
66. Extension.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/4.0/StructureDefinition/extension-GraphDefinition.link.target`
68. Extension.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..01 This element is affected by the following invariants: ext-1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, integer64, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Availability, ExtendedContactDetail, Dosage, Meta
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

Guidance on how to interpret the contents of this table can be foundhere

0. Extension
Definition	R4: `GraphDefinition.link.target` (new:BackboneElement)
Short	R4: Potential target for the link (new)
Comments	Element `GraphDefinition.link.target` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..*
Is Modifier	false
2. Extension.extension
Control	1..*
Slicing	This element introduces a set of slices on `Extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
4. Extension.extension:type
Slice Name	type
Definition	R4: `GraphDefinition.link.target.type` (new:code)
Short	R4: Type of resource this link refers to (new)
Comments	Element `GraphDefinition.link.target.type` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.type` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.type` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	1..1
Requirements	Element `GraphDefinition.link.target.type` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.type` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.type` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
6. Extension.extension:type.url
Control	1..1
Fixed Value	`type`
8. Extension.extension:type.value[x]
Definition	Type of resource this link refers to.
Short	Type of resource this link refers to
Control	1..1
Binding	The codes SHALL be taken from R4ResourceTypesForR5 (0.1.0) (required to `http://hl7.org/fhir/uv/xver/ValueSet/R4-resource-types-for-R5\|0.1.0`) One of the resource types defined as part of this version of FHIR.
Type	code
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
10. Extension.extension:params
Slice Name	params
Definition	R4: `GraphDefinition.link.target.params` (new:string)
Short	R4: Criteria for reverse lookup (new)
Comments	Element `GraphDefinition.link.target.params` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.params` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.params` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element). At least one of the parameters must have the value {ref} which identifies the focus resource.
Control	0..1
Requirements	Element `GraphDefinition.link.target.params` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.params` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.params` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
12. Extension.extension:params.url
Control	1..1
Fixed Value	`params`
14. Extension.extension:params.value[x]
Definition	A set of parameters to look up.
Short	Criteria for reverse lookup
Comments	At least one of the parameters must have the value {ref} which identifies the focus resource.
Control	0..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
16. Extension.extension:profile
Slice Name	profile
Definition	R4: `GraphDefinition.link.target.profile` (new:canonical(StructureDefinition))
Short	R4: Profile for the target resource (new)
Comments	Element `GraphDefinition.link.target.profile` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.profile` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.profile` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `GraphDefinition.link.target.profile` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.profile` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.profile` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
18. Extension.extension:profile.url
Control	1..1
Fixed Value	`profile`
20. Extension.extension:profile.value[x]
Definition	Profile for the target resource.
Short	Profile for the target resource
Control	0..1
Type	canonical(Cross-version Profile for R4.StructureDefinition for use in FHIR R5, StructureDefinition)
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
22. Extension.extension:compartment
Slice Name	compartment
Definition	R4: `GraphDefinition.link.target.compartment` (new:BackboneElement)
Short	R4: Compartment Consistency Rules (new)
Comments	Element `GraphDefinition.link.target.compartment` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.compartment` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..*
Requirements	Element `GraphDefinition.link.target.compartment` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.compartment` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
24. Extension.extension:compartment.extension
Control	3..*
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
26. Extension.extension:compartment.extension:use
Slice Name	use
Definition	R4: `GraphDefinition.link.target.compartment.use` (new:code)
Short	R4: condition \| requirement (new)
Comments	Element `GraphDefinition.link.target.compartment.use` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.use` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.use` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element). All conditional rules are evaluated; if they are true, then the rules are evaluated.
Control	1..1
Requirements	Element `GraphDefinition.link.target.compartment.use` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.use` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.use` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
28. Extension.extension:compartment.extension:use.url
Control	1..1
Fixed Value	`use`
30. Extension.extension:compartment.extension:use.value[x]
Definition	Defines how the compartment rule is used - whether it it is used to test whether resources are subject to the rule, or whether it is a rule that must be followed.
Short	condition \| requirement
Comments	All conditional rules are evaluated; if they are true, then the rules are evaluated.
Control	1..1
Binding	The codes SHALL be taken from GraphCompartmentUse (required to `http://hl7.org/fhir/ValueSet/graph-compartment-use\|5.0.0`) Defines how a compartment rule is used.
Type	code
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
32. Extension.extension:compartment.extension:code
Slice Name	code
Definition	R4: `GraphDefinition.link.target.compartment.code` (new:code)
Short	R4: Patient \| Encounter \| RelatedPerson \| Practitioner \| Device (new)
Comments	Element `GraphDefinition.link.target.compartment.code` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.code` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.code` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	1..1
Requirements	Element `GraphDefinition.link.target.compartment.code` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.code` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.code` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
34. Extension.extension:compartment.extension:code.url
Control	1..1
Fixed Value	`code`
36. Extension.extension:compartment.extension:code.value[x]
Definition	Identifies the compartment.
Short	Patient \| Encounter \| RelatedPerson \| Practitioner \| Device
Control	1..1
Binding	The codes SHALL be taken from CompartmentType (required to `http://hl7.org/fhir/ValueSet/compartment-type\|5.0.0`) Identifies a compartment.
Type	code
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
38. Extension.extension:compartment.extension:rule
Slice Name	rule
Definition	R4: `GraphDefinition.link.target.compartment.rule` (new:code)
Short	R4: identical \| matching \| different \| custom (new)
Comments	Element `GraphDefinition.link.target.compartment.rule` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.rule` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.rule` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	1..1
Requirements	Element `GraphDefinition.link.target.compartment.rule` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.rule` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.rule` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
40. Extension.extension:compartment.extension:rule.url
Control	1..1
Fixed Value	`rule`
42. Extension.extension:compartment.extension:rule.value[x]
Definition	identical \| matching \| different \| no-rule \| custom.
Short	identical \| matching \| different \| custom
Control	1..1
Binding	The codes SHALL be taken from GraphCompartmentRule (required to `http://hl7.org/fhir/ValueSet/graph-compartment-rule\|5.0.0`) How a compartment must be linked.
Type	code
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
44. Extension.extension:compartment.extension:expression
Slice Name	expression
Definition	R4: `GraphDefinition.link.target.compartment.expression` (new:string)
Short	R4: Custom rule, as a FHIRPath expression (new)
Comments	Element `GraphDefinition.link.target.compartment.expression` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.expression` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.expression` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `GraphDefinition.link.target.compartment.expression` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.expression` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.expression` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
46. Extension.extension:compartment.extension:expression.url
Control	1..1
Fixed Value	`expression`
48. Extension.extension:compartment.extension:expression.value[x]
Definition	Custom rule, as a FHIRPath expression.
Short	Custom rule, as a FHIRPath expression
Control	0..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
50. Extension.extension:compartment.extension:description
Slice Name	description
Definition	R4: `GraphDefinition.link.target.compartment.description` (new:string)
Short	R4: Documentation for FHIRPath expression (new)
Comments	Element `GraphDefinition.link.target.compartment.description` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.description` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.description` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `GraphDefinition.link.target.compartment.description` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.description` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.description` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
52. Extension.extension:compartment.extension:description.url
Control	1..1
Fixed Value	`description`
54. Extension.extension:compartment.extension:description.value[x]
Definition	Documentation for FHIRPath expression.
Short	Documentation for FHIRPath expression
Control	0..1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
56. Extension.extension:compartment.url
Control	1..1
Fixed Value	`compartment`
58. Extension.extension:compartment.value[x]
Control	0..0
60. Extension.extension:link
Slice Name	link
Definition	R4: `GraphDefinition.link.target.link` (new:GraphDefinition.link)
Short	R4: Additional links from target resource (new)
Comments	Element `GraphDefinition.link.target.link` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.link` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.link` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..*
Requirements	Element `GraphDefinition.link.target.link` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.link` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.link` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
62. Extension.extension:link.url
Control	1..1
Fixed Value	`http://hl7.org/fhir/4.0/StructureDefinition/extension-GraphDefinition.link`
64. Extension.extension:link.value[x]
Control	0..0
66. Extension.url
Control	1..1
Fixed Value	`http://hl7.org/fhir/4.0/StructureDefinition/extension-GraphDefinition.link.target`
68. Extension.value[x]
Control	0..0

Guidance on how to interpret the contents of this table can be foundhere

0. Extension
Definition	R4: `GraphDefinition.link.target` (new:BackboneElement)
Short	R4: Potential target for the link (new)
Comments	Element `GraphDefinition.link.target` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..*
Is Modifier	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
2. Extension.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
4. Extension.extension
Definition	An Extension
Short	Extension
Control	1..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
6. Extension.extension:type
Slice Name	type
Definition	R4: `GraphDefinition.link.target.type` (new:code)
Short	R4: Type of resource this link refers to (new)
Comments	Element `GraphDefinition.link.target.type` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.type` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.type` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	1..1
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.type` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.type` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.type` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
8. Extension.extension:type.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
10. Extension.extension:type.extension
Definition	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 managable, 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.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
12. Extension.extension:type.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`type`
14. Extension.extension:type.value[x]
Definition	Type of resource this link refers to.
Short	Type of resource this link refers to
Control	1..1 This element is affected by the following invariants: ext-1
Binding	The codes SHALL be taken from R4ResourceTypesForR5 (0.1.0) (required to `http://hl7.org/fhir/uv/xver/ValueSet/R4-resource-types-for-R5\|0.1.0`) One of the resource types defined as part of this version of FHIR.
Type	code
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
16. Extension.extension:params
Slice Name	params
Definition	R4: `GraphDefinition.link.target.params` (new:string)
Short	R4: Criteria for reverse lookup (new)
Comments	Element `GraphDefinition.link.target.params` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.params` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.params` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element). At least one of the parameters must have the value {ref} which identifies the focus resource.
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.params` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.params` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.params` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
18. Extension.extension:params.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
20. Extension.extension:params.extension
Definition	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 managable, 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.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
22. Extension.extension:params.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`params`
24. Extension.extension:params.value[x]
Definition	A set of parameters to look up.
Short	Criteria for reverse lookup
Comments	At least one of the parameters must have the value {ref} which identifies the focus resource.
Control	0..1 This element is affected by the following invariants: ext-1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
26. Extension.extension:profile
Slice Name	profile
Definition	R4: `GraphDefinition.link.target.profile` (new:canonical(StructureDefinition))
Short	R4: Profile for the target resource (new)
Comments	Element `GraphDefinition.link.target.profile` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.profile` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.profile` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.profile` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.profile` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.profile` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
28. Extension.extension:profile.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
30. Extension.extension:profile.extension
Definition	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 managable, 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.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
32. Extension.extension:profile.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`profile`
34. Extension.extension:profile.value[x]
Definition	Profile for the target resource.
Short	Profile for the target resource
Control	0..1 This element is affected by the following invariants: ext-1
Type	canonical(Cross-version Profile for R4.StructureDefinition for use in FHIR R5, StructureDefinition)
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
36. Extension.extension:compartment
Slice Name	compartment
Definition	R4: `GraphDefinition.link.target.compartment` (new:BackboneElement)
Short	R4: Compartment Consistency Rules (new)
Comments	Element `GraphDefinition.link.target.compartment` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.compartment` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.compartment` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.compartment` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
38. Extension.extension:compartment.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
40. Extension.extension:compartment.extension
Definition	An Extension
Short	Extension
Control	3..*
Type	Extension
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
42. Extension.extension:compartment.extension:use
Slice Name	use
Definition	R4: `GraphDefinition.link.target.compartment.use` (new:code)
Short	R4: condition \| requirement (new)
Comments	Element `GraphDefinition.link.target.compartment.use` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.use` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.use` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element). All conditional rules are evaluated; if they are true, then the rules are evaluated.
Control	1..1
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.compartment.use` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.use` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.use` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
44. Extension.extension:compartment.extension:use.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
46. Extension.extension:compartment.extension:use.extension
Definition	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 managable, 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.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
48. Extension.extension:compartment.extension:use.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`use`
50. Extension.extension:compartment.extension:use.value[x]
Definition	Defines how the compartment rule is used - whether it it is used to test whether resources are subject to the rule, or whether it is a rule that must be followed.
Short	condition \| requirement
Comments	All conditional rules are evaluated; if they are true, then the rules are evaluated.
Control	1..1 This element is affected by the following invariants: ext-1
Binding	The codes SHALL be taken from GraphCompartmentUse (required to `http://hl7.org/fhir/ValueSet/graph-compartment-use\|5.0.0`) Defines how a compartment rule is used.
Type	code
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
52. Extension.extension:compartment.extension:code
Slice Name	code
Definition	R4: `GraphDefinition.link.target.compartment.code` (new:code)
Short	R4: Patient \| Encounter \| RelatedPerson \| Practitioner \| Device (new)
Comments	Element `GraphDefinition.link.target.compartment.code` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.code` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.code` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	1..1
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.compartment.code` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.code` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.code` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
54. Extension.extension:compartment.extension:code.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
56. Extension.extension:compartment.extension:code.extension
Definition	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 managable, 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.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
58. Extension.extension:compartment.extension:code.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`code`
60. Extension.extension:compartment.extension:code.value[x]
Definition	Identifies the compartment.
Short	Patient \| Encounter \| RelatedPerson \| Practitioner \| Device
Control	1..1 This element is affected by the following invariants: ext-1
Binding	The codes SHALL be taken from CompartmentType (required to `http://hl7.org/fhir/ValueSet/compartment-type\|5.0.0`) Identifies a compartment.
Type	code
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
62. Extension.extension:compartment.extension:rule
Slice Name	rule
Definition	R4: `GraphDefinition.link.target.compartment.rule` (new:code)
Short	R4: identical \| matching \| different \| custom (new)
Comments	Element `GraphDefinition.link.target.compartment.rule` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.rule` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.rule` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	1..1
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.compartment.rule` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.rule` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.rule` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
64. Extension.extension:compartment.extension:rule.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
66. Extension.extension:compartment.extension:rule.extension
Definition	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 managable, 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.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
68. Extension.extension:compartment.extension:rule.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`rule`
70. Extension.extension:compartment.extension:rule.value[x]
Definition	identical \| matching \| different \| no-rule \| custom.
Short	identical \| matching \| different \| custom
Control	1..1 This element is affected by the following invariants: ext-1
Binding	The codes SHALL be taken from GraphCompartmentRule (required to `http://hl7.org/fhir/ValueSet/graph-compartment-rule\|5.0.0`) How a compartment must be linked.
Type	code
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
72. Extension.extension:compartment.extension:expression
Slice Name	expression
Definition	R4: `GraphDefinition.link.target.compartment.expression` (new:string)
Short	R4: Custom rule, as a FHIRPath expression (new)
Comments	Element `GraphDefinition.link.target.compartment.expression` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.expression` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.expression` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.compartment.expression` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.expression` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.expression` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
74. Extension.extension:compartment.extension:expression.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
76. Extension.extension:compartment.extension:expression.extension
Definition	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 managable, 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.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
78. Extension.extension:compartment.extension:expression.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`expression`
80. Extension.extension:compartment.extension:expression.value[x]
Definition	Custom rule, as a FHIRPath expression.
Short	Custom rule, as a FHIRPath expression
Control	0..1 This element is affected by the following invariants: ext-1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
82. Extension.extension:compartment.extension:description
Slice Name	description
Definition	R4: `GraphDefinition.link.target.compartment.description` (new:string)
Short	R4: Documentation for FHIRPath expression (new)
Comments	Element `GraphDefinition.link.target.compartment.description` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.description` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.description` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.compartment.description` is part of an existing definition because parent element `GraphDefinition.link.target.compartment` requires a cross-version extension. Element `GraphDefinition.link.target.compartment.description` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.compartment.description` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
84. Extension.extension:compartment.extension:description.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
86. Extension.extension:compartment.extension:description.extension
Definition	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 managable, 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.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
88. Extension.extension:compartment.extension:description.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`description`
90. Extension.extension:compartment.extension:description.value[x]
Definition	Documentation for FHIRPath expression.
Short	Documentation for FHIRPath expression
Control	0..1 This element is affected by the following invariants: ext-1
Type	string
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
92. Extension.extension:compartment.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`compartment`
94. Extension.extension:compartment.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..0 This element is affected by the following invariants: ext-1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, integer64, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Availability, ExtendedContactDetail, Dosage, Meta
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
96. Extension.extension:link
Slice Name	link
Definition	R4: `GraphDefinition.link.target.link` (new:GraphDefinition.link)
Short	R4: Additional links from target resource (new)
Comments	Element `GraphDefinition.link.target.link` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.link` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.link` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `GraphDefinition.link.target.link` is part of an existing definition because parent element `GraphDefinition.link.target` requires a cross-version extension. Element `GraphDefinition.link.target.link` has a context of GraphDefinition.link based on following the parent source element upwards and mapping to `GraphDefinition`. Element `GraphDefinition.link.target.link` has no mapping targets in FHIR R5. Typically, this is because the element has been added (is a new element).
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
98. Extension.extension:link.id
Definition	Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.
Short	Unique id for inter-element referencing
Control	0..1 This element is affected by the following invariants: ele-1
Type	id
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
100. Extension.extension:link.extension
Definition	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 managable, 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.
Short	Additional content defined by implementations
Comments	There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Alternate Names	extensions, user content
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`) ext-1: Must have either extensions or value[x], not both (`extension.exists() != value.exists()`)
Slicing	This element introduces a set of slices on `Extension.extension.extension`. The slices areUnordered and Open, and can be differentiated using the following discriminators: value @ url
102. Extension.extension:link.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/4.0/StructureDefinition/extension-GraphDefinition.link`
104. Extension.extension:link.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..0 This element is affected by the following invariants: ext-1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, integer64, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Availability, ExtendedContactDetail, Dosage, Meta
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
106. Extension.url
Definition	Source of the definition for the extension code - a logical name or a URL.
Short	identifies the meaning of the extension
Comments	The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension.
Control	1..1
Type	uri
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
Fixed Value	`http://hl7.org/fhir/4.0/StructureDefinition/extension-GraphDefinition.link.target`
108. Extension.value[x]
Definition	Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Value of extension
Control	0..0 This element is affected by the following invariants: ext-1
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, integer64, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Availability, ExtendedContactDetail, Dosage, Meta
Is Modifier	false
Primitive Value	This primitive element may be present, or absent, or replaced by an extension
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)