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

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

Extension: ExtensionEvidenceVariable_Characteristic - Detailed Descriptions

Page standards status: Trial-use

Maturity Level: 0

Definitions for the ext-R5-EvidenceVariable.characteristic 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	R5: `EvidenceVariable.characteristic` Optional Extension Element - found in all resources.
Short	R5: A defining factor of the EvidenceVariableOptional Extensions Element
Comments	Element `EvidenceVariable.characteristic` is mapped to FHIR R4 element `EvidenceVariable.characteristic` as `Equivalent`. Characteristics can be defined flexibly to accommodate different use cases for membership criteria, ranging from simple codes, all the way to using an expression language to express the criteria.
Control	0..* This element is affected by the following invariants: ele-1
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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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	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()`) 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:linkId
Slice Name	linkId
Definition	R5: `EvidenceVariable.characteristic.linkId` (new:id)
Short	R5: Label for internal linking (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.linkId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.linkId` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.linkId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.linkId` has no mapping targets in FHIR R4. 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:linkId.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	`linkId`
8. Extension.extension:linkId.value[x]
Definition	Label used for when a characteristic refers to another characteristic. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Label for internal linkingValue of extension
Control	0..1
Type	id, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, 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:description
Slice Name	description
Definition	R5: `EvidenceVariable.characteristic.description`
Short	R5: descriptionAdditional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.description` is mapped to FHIR R4 element `EvidenceVariable.characteristic.description` as `Equivalent`.
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Need to be able to describe characteristics in natural language so that end users can understand the criteria. Element `EvidenceVariable.characteristic.description` is mapped to FHIR R4 element `EvidenceVariable.characteristic.description` as `Equivalent`.
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: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`
14. Extension.extension:description.value[x]
Definition	A short, natural language description of the characteristic that could be used to communicate the criteria to an end-user. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Natural language description of the characteristicValue of extension
Control	0..1
Type	markdown, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, 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:note
Slice Name	note
Definition	R5: `EvidenceVariable.characteristic.note` (new:Annotation)
Short	R5: Used for footnotes or explanatory notes (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.note` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.note` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.note` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.note` has no mapping targets in FHIR R4. 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:note.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	`note`
20. Extension.extension:note.value[x]
Definition	A human-readable string to clarify or explain concepts about the characteristic. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Used for footnotes or explanatory notesValue of extension
Control	0..1
Type	Annotation, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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:exclude
Slice Name	exclude
Definition	R5: `EvidenceVariable.characteristic.exclude`
Short	R5: Whether the characteristic is an inclusion criterion or exclusion criterionAdditional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.exclude` is mapped to FHIR R4 element `EvidenceVariable.characteristic.exclude` as `Equivalent`.
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.exclude` is mapped to FHIR R4 element `EvidenceVariable.characteristic.exclude` as `Equivalent`.
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:exclude.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	`exclude`
26. Extension.extension:exclude.value[x]
Definition	When true, this characteristic is an exclusion criterion. In other words, not matching this characteristic definition is equivalent to meeting this criterion. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Whether the characteristic is an inclusion criterion or exclusion criterionValue of extension
Control	0..1
Type	boolean, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, Expression, 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()))
28. Extension.extension:definitionReference
Slice Name	definitionReference
Definition	R5: `EvidenceVariable.characteristic.definitionReference` (new:Reference(EvidenceVariable,Group,Evidence))
Short	R5: Defines the characteristic (without using type and value) by a Reference (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionReference` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionReference` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionReference` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionReference` has no mapping targets in FHIR R4. 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())
30. Extension.extension:definitionReference.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	`definitionReference`
32. Extension.extension:definitionReference.value[x]
Definition	Defines the characteristic using a Reference. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Defines the characteristic (without using type and value) by a ReferenceValue of extension
Control	0..1
Type	Reference(Cross-version Profile for R5.EvidenceVariable for use in FHIR R4, EvidenceVariable, Cross-version Profile for R5.Group for use in FHIR R4, Group, Cross-version Profile for R5.Evidence for use in FHIR R4, Evidence), date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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()))
34. Extension.extension:definitionCanonical
Slice Name	definitionCanonical
Definition	R5: `EvidenceVariable.characteristic.definitionCanonical` (new:canonical(EvidenceVariable,Evidence))
Short	R5: Defines the characteristic (without using type and value) by a Canonical (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionCanonical` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCanonical` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionCanonical` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCanonical` has no mapping targets in FHIR R4. 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())
36. Extension.extension:definitionCanonical.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	`definitionCanonical`
38. Extension.extension:definitionCanonical.value[x]
Definition	Defines the characteristic using Canonical. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Defines the characteristic (without using type and value) by a CanonicalValue of extension
Control	0..1
Type	canonical(Cross-version Profile for R5.EvidenceVariable for use in FHIR R4, EvidenceVariable, Cross-version Profile for R5.Evidence for use in FHIR R4, Evidence), date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, 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()))
40. Extension.extension:definitionCodeableConcept
Slice Name	definitionCodeableConcept
Definition	R5: `EvidenceVariable.characteristic.definitionCodeableConcept` (new:CodeableConcept)
Short	R5: Defines the characteristic (without using type and value) by a CodeableConcept (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionCodeableConcept` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCodeableConcept` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionCodeableConcept` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCodeableConcept` has no mapping targets in FHIR R4. 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())
42. Extension.extension:definitionCodeableConcept.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	`definitionCodeableConcept`
44. Extension.extension:definitionCodeableConcept.value[x]
Definition	Defines the characteristic using CodeableConcept. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Defines the characteristic (without using type and value) by a CodeableConceptValue of extension
Control	0..1
Type	CodeableConcept, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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()))
46. Extension.extension:definitionExpression
Slice Name	definitionExpression
Definition	R5: `EvidenceVariable.characteristic.definitionExpression` (new:Expression)
Short	R5: Defines the characteristic (without using type and value) by an expression (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionExpression` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionExpression` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). When another element provides a definition of the characteristic, the definitionExpression content SHALL match the definition (only adding technical concepts necessary for implementation) without changing the meaning.
Control	0..1*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.definitionExpression` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionExpression` has no mapping targets in FHIR R4. 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())
48. Extension.extension:definitionExpression.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	`definitionExpression`
50. Extension.extension:definitionExpression.value[x]
Definition	Defines the characteristic using Expression. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Defines the characteristic (without using type and value) by an expressionValue of extension
Comments	When another element provides a definition of the characteristic, the definitionExpression content SHALL match the definition (only adding technical concepts necessary for implementation) without changing the meaning.
Control	0..1
Type	Expression, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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()))
52. Extension.extension:definitionId
Slice Name	definitionId
Definition	R5: `EvidenceVariable.characteristic.definitionId` (new:id)
Short	R5: Defines the characteristic (without using type and value) by an id (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionId` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionId` has no mapping targets in FHIR R4. 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())
54. Extension.extension:definitionId.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	`definitionId`
56. Extension.extension:definitionId.value[x]
Definition	Defines the characteristic using id. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Defines the characteristic (without using type and value) by an idValue of extension
Control	0..1
Type	id, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, 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()))
58. Extension.extension:definitionByTypeAndValue
Slice Name	definitionByTypeAndValue
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue` (new:BackboneElement)
Short	R5: Defines the characteristic using type and value (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByTypeAndValue` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue` has no mapping targets in FHIR R4. 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())
60. Extension.extension:definitionByTypeAndValue.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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	20..*
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
62. Extension.extension:definitionByTypeAndValue.extension:type
Slice Name	type
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.type` (new:CodeableConcept)
Short	R5: Expresses the type of characteristic (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByTypeAndValue.type` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` has no mapping targets in FHIR R4. 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())
64. Extension.extension:definitionByTypeAndValue.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`
66. Extension.extension:definitionByTypeAndValue.extension:type.value[x]
Definition	Used to express the type of characteristic. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Expresses the type of characteristicValue of extension
Control	10..1
Binding	For example codes, see For codes, see UsageContextType (example to `http://hl7.org/fhir/ValueSet/usage-context-type\|4.0.1`)
Type	CodeableConcept, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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()))
68. Extension.extension:definitionByTypeAndValue.extension:method
Slice Name	method
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.method` (new:CodeableConcept)
Short	R5: Method for how the characteristic value was determined (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` has no mapping targets in FHIR R4. 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())
70. Extension.extension:definitionByTypeAndValue.extension:method.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	`method`
72. Extension.extension:definitionByTypeAndValue.extension:method.value[x]
Definition	Method for how the characteristic value was determined. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Method for how the characteristic value was determinedValue of extension
Control	0..1
Binding	For example codes, see For codes, see R5DefinitionMethodForR4 (0.1.0) (example to `http://hl7.org/fhir/uv/xver/ValueSet/R5-definition-method-for-R4\|0.1.0`)
Type	CodeableConcept, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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()))
74. Extension.extension:definitionByTypeAndValue.extension:device
Slice Name	device
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.device` (new:Reference(Device,DeviceMetric))
Short	R5: Device used for determining characteristic (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByTypeAndValue.device` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` has no mapping targets in FHIR R4. 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())
76. Extension.extension:definitionByTypeAndValue.extension:device.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	`device`
78. Extension.extension:definitionByTypeAndValue.extension:device.value[x]
Definition	Device used for determining characteristic. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Device used for determining characteristicValue of extension
Control	0..1
Type	Reference(Cross-version Profile for R5.Device for use in FHIR R4, Device, Cross-version Profile for R5.DeviceMetric for use in FHIR R4, DeviceMetric), date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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()))
80. Extension.extension:definitionByTypeAndValue.extension:value
Slice Name	value
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` (new:boolean, CodeableConcept, id, Quantity, Range, Reference)
Short	R5: Defines the characteristic when coupled with characteristic.type (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` has no mapping targets in FHIR R4. 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())
82. Extension.extension:definitionByTypeAndValue.extension:value.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	`value`
84. Extension.extension:definitionByTypeAndValue.extension:value.value[x]
Definition	Defines the characteristic when paired with characteristic.type. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Defines the characteristic when coupled with characteristic.typeValue of extension
Control	10..1
Type	Choice of: CodeableConcept, boolean, Quantity, Range, Reference, id, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, positiveInt, Distance, Period, Duration, canonical, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, uri, url, Annotation, ContactDetail, Expression, 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()))
86. Extension.extension:definitionByTypeAndValue.extension:offset
Slice Name	offset
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` (new:CodeableConcept)
Short	R5: Reference point for valueQuantity or valueRange (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` has no mapping targets in FHIR R4. 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())
88. Extension.extension:definitionByTypeAndValue.extension:offset.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	`offset`
90. Extension.extension:definitionByTypeAndValue.extension:offset.value[x]
Definition	Defines the reference point for comparison when valueQuantity or valueRange is not compared to zero. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Reference point for valueQuantity or valueRangeValue of extension
Control	0..1
Binding	For example codes, see For codes, see R5CharacteristicOffsetForR4 (0.1.0) (example to `http://hl7.org/fhir/uv/xver/ValueSet/R5-characteristic-offset-for-R4\|0.1.0`)
Type	CodeableConcept, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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()))
92. Extension.extension:definitionByTypeAndValue.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	`definitionByTypeAndValue`
94. Extension.extension:definitionByTypeAndValue.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
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, 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()))
96. Extension.extension:definitionByCombination
Slice Name	definitionByCombination
Definition	R5: `EvidenceVariable.characteristic.definitionByCombination` (new:BackboneElement)
Short	R5: Used to specify how two or more characteristics are combined (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionByCombination` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByCombination` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination` has no mapping targets in FHIR R4. 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())
98. Extension.extension:definitionByCombination.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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	20..*
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
100. Extension.extension:definitionByCombination.extension:code
Slice Name	code
Definition	R5: `EvidenceVariable.characteristic.definitionByCombination.code` (new:code)
Short	R5: all-of \| any-of \| at-least \| at-most \| statistical \| net-effect \| dataset (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionByCombination.code` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.code` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.code` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	10..1*
Type	Extension
Is Modifier	false
Summary	false
Requirements	If code is "at-least" or "at-most" then threshold SHALL be used. If code is neither "at-least" nor "at-most" then threshold SHALL NOT be used. Element `EvidenceVariable.characteristic.definitionByCombination.code` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.code` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.code` has no mapping targets in FHIR R4. 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())
102. Extension.extension:definitionByCombination.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`
104. Extension.extension:definitionByCombination.extension:code.value[x]
Definition	Used to specify if two or more characteristics are combined with OR or AND. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	all-of \| any-of \| at-least \| at-most \| statistical \| net-effect \| datasetValue of extension
Control	10..1
Binding	The codes SHALL be taken from For codes, see R5CharacteristicCombinationForR4 (0.1.0) (required to `http://hl7.org/fhir/uv/xver/ValueSet/R5-characteristic-combination-for-R4\|0.1.0`)
Type	code, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, 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()))
106. Extension.extension:definitionByCombination.extension:threshold
Slice Name	threshold
Definition	R5: `EvidenceVariable.characteristic.definitionByCombination.threshold` (new:positiveInt)
Short	R5: Provides the value of "n" when "at-least" or "at-most" codes are used (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionByCombination.threshold` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.threshold` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.threshold` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByCombination.threshold` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.threshold` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.threshold` has no mapping targets in FHIR R4. 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())
108. Extension.extension:definitionByCombination.extension:threshold.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	`threshold`
110. Extension.extension:definitionByCombination.extension:threshold.value[x]
Definition	Provides the value of "n" when "at-least" or "at-most" codes are used. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Provides the value of "n" when "at-least" or "at-most" codes are usedValue of extension
Control	0..1
Type	positiveInt, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, 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()))
112. Extension.extension:definitionByCombination.extension:characteristic
Slice Name	characteristic
Definition	R5: `EvidenceVariable.characteristic.definitionByCombination.characteristic` (new:EvidenceVariable.characteristic)
Short	R5: A defining factor of the characteristic (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	10..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has no mapping targets in FHIR R4. 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())
114. Extension.extension:definitionByCombination.extension:characteristic.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/5.0/StructureDefinition/extension-EvidenceVariable.characteristic`
116. Extension.extension:definitionByCombination.extension:characteristic.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
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, 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()))
118. Extension.extension:definitionByCombination.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	`definitionByCombination`
120. Extension.extension:definitionByCombination.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
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, 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()))
122. Extension.extension:instances
Slice Name	instances
Definition	R5: `EvidenceVariable.characteristic.instances[x]` (new:Quantity, Range)
Short	R5: Number of occurrences meeting the characteristic (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.instances[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.instances[x]` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.instances[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.instances[x]` has no mapping targets in FHIR R4. 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())
124. Extension.extension:instances.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	`instances`
126. Extension.extension:instances.value[x]
Definition	Number of occurrences meeting the characteristic. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Number of occurrences meeting the characteristicValue of extension
Control	0..1
Type	Choice of: Quantity, Range, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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()))
128. Extension.extension:duration
Slice Name	duration
Definition	R5: `EvidenceVariable.characteristic.duration[x]` (new:Quantity, Range)
Short	R5: Length of time in which the characteristic is met (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.duration[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.duration[x]` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.duration[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.duration[x]` has no mapping targets in FHIR R4. 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())
130. Extension.extension:duration.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	`duration`
132. Extension.extension:duration.value[x]
Definition	Length of time in which the characteristic is met. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Length of time in which the characteristic is metValue of extension
Control	0..1
Type	Choice of: Quantity, Range, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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()))
134. Extension.extension:timeFromEvent
Slice Name	timeFromEvent
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent`
Short	R5: Timing in which the characteristic is determinedAdditional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.timeFromEvent` is mapped to FHIR R4 element `EvidenceVariable.characteristic.timeFromStart` as `SourceIsBroaderThanTarget`.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.timeFromEvent` is mapped to FHIR R4 element `EvidenceVariable.characteristic.timeFromStart` as `SourceIsBroaderThanTarget`.
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())
136. Extension.extension:timeFromEvent.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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	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()`) 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
138. Extension.extension:timeFromEvent.extension:description
Slice Name	description
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.description` (new:markdown)
Short	R5: Human readable description (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.description` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.description` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.timeFromEvent.description` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.description` has no mapping targets in FHIR R4. 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())
140. Extension.extension:timeFromEvent.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`
142. Extension.extension:timeFromEvent.extension:description.value[x]
Definition	Human readable description. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Human readable descriptionValue of extension
Control	0..1
Type	markdown, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, 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()))
144. Extension.extension:timeFromEvent.extension:note
Slice Name	note
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.note` (new:Annotation)
Short	R5: Used for footnotes or explanatory notes (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.note` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.note` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.timeFromEvent.note` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.note` has no mapping targets in FHIR R4. 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())
146. Extension.extension:timeFromEvent.extension:note.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	`note`
148. Extension.extension:timeFromEvent.extension:note.value[x]
Definition	A human-readable string to clarify or explain concepts about the timeFromEvent. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Used for footnotes or explanatory notesValue of extension
Control	0..1
Type	Annotation, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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()))
150. Extension.extension:timeFromEvent.extension:event
Slice Name	event
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.event[x]` (new:CodeableConcept, dateTime, id, Reference)
Short	R5: The event used as a base point (reference point) in time (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.event[x]` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.event[x]` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.timeFromEvent.event[x]` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.event[x]` has no mapping targets in FHIR R4. 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())
152. Extension.extension:timeFromEvent.extension:event.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	`event`
154. Extension.extension:timeFromEvent.extension:event.value[x]
Definition	The event used as a base point (reference point) in time. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	The event used as a base point (reference point) in timeValue of extension
Control	0..1
Binding	For example codes, see For codes, see R5EvidenceVariableEventForR4 (0.1.0) (example to `http://hl7.org/fhir/uv/xver/ValueSet/R5-evidence-variable-event-for-R4\|0.1.0`)
Type	Choice of: CodeableConcept, Reference, dateTime, id, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ParameterDefinition, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, 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()))
156. Extension.extension:timeFromEvent.extension:quantity
Slice Name	quantity
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.quantity` (new:Quantity)
Short	R5: Used to express the observation at a defined amount of time before or after the event (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.quantity` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.quantity` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.timeFromEvent.quantity` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.quantity` has no mapping targets in FHIR R4. 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())
158. Extension.extension:timeFromEvent.extension:quantity.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	`quantity`
160. Extension.extension:timeFromEvent.extension:quantity.value[x]
Definition	Used to express the observation at a defined amount of time before or after the event. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Used to express the observation at a defined amount of time before or after the eventValue of extension
Control	0..1
Type	Quantity, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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()))
162. Extension.extension:timeFromEvent.extension:range
Slice Name	range
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.range` (new:Range)
Short	R5: Used to express the observation within a period before and/or after the event (new)Additional content defined by implementations
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.range` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.range` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.timeFromEvent.range` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.range` has no mapping targets in FHIR R4. 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())
164. Extension.extension:timeFromEvent.extension:range.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	`range`
166. Extension.extension:timeFromEvent.extension:range.value[x]
Definition	Used to express the observation within a period before and/or after the event. Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).
Short	Used to express the observation within a period before and/or after the eventValue of extension
Control	0..1
Type	Range, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, Signature, unsignedInt, time
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
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()))
168. Extension.extension:timeFromEvent.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	`timeFromEvent`
170. Extension.extension:timeFromEvent.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
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, 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()))
172. 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/5.0/StructureDefinition/extension-EvidenceVariable.characteristic`
174. 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
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, 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	R5: `EvidenceVariable.characteristic`
Short	R5: A defining factor of the EvidenceVariable
Comments	Element `EvidenceVariable.characteristic` is mapped to FHIR R4 element `EvidenceVariable.characteristic` as `Equivalent`. Characteristics can be defined flexibly to accommodate different use cases for membership criteria, ranging from simple codes, all the way to using an expression language to express the criteria.
Control	0..*
Is Modifier	false
2. Extension.extension
Control	0..*
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:linkId
Slice Name	linkId
Definition	R5: `EvidenceVariable.characteristic.linkId` (new:id)
Short	R5: Label for internal linking (new)
Comments	Element `EvidenceVariable.characteristic.linkId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.linkId` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.linkId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.linkId` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
6. Extension.extension:linkId.url
Control	1..1
Fixed Value	`linkId`
8. Extension.extension:linkId.value[x]
Definition	Label used for when a characteristic refers to another characteristic.
Short	Label for internal linking
Control	0..1
Type	id
[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:description
Slice Name	description
Definition	R5: `EvidenceVariable.characteristic.description`
Short	R5: description
Comments	Element `EvidenceVariable.characteristic.description` is mapped to FHIR R4 element `EvidenceVariable.characteristic.description` as `Equivalent`.
Control	0..1
Requirements	Need to be able to describe characteristics in natural language so that end users can understand the criteria. Element `EvidenceVariable.characteristic.description` is mapped to FHIR R4 element `EvidenceVariable.characteristic.description` as `Equivalent`.
12. Extension.extension:description.url
Control	1..1
Fixed Value	`description`
14. Extension.extension:description.value[x]
Definition	A short, natural language description of the characteristic that could be used to communicate the criteria to an end-user.
Short	Natural language description of the characteristic
Control	0..1
Type	markdown
[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:note
Slice Name	note
Definition	R5: `EvidenceVariable.characteristic.note` (new:Annotation)
Short	R5: Used for footnotes or explanatory notes (new)
Comments	Element `EvidenceVariable.characteristic.note` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.note` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..*
Requirements	Element `EvidenceVariable.characteristic.note` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.note` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
18. Extension.extension:note.url
Control	1..1
Fixed Value	`note`
20. Extension.extension:note.value[x]
Definition	A human-readable string to clarify or explain concepts about the characteristic.
Short	Used for footnotes or explanatory notes
Control	0..1
Type	Annotation
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
22. Extension.extension:exclude
Slice Name	exclude
Definition	R5: `EvidenceVariable.characteristic.exclude`
Short	R5: Whether the characteristic is an inclusion criterion or exclusion criterion
Comments	Element `EvidenceVariable.characteristic.exclude` is mapped to FHIR R4 element `EvidenceVariable.characteristic.exclude` as `Equivalent`.
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.exclude` is mapped to FHIR R4 element `EvidenceVariable.characteristic.exclude` as `Equivalent`.
24. Extension.extension:exclude.url
Control	1..1
Fixed Value	`exclude`
26. Extension.extension:exclude.value[x]
Definition	When true, this characteristic is an exclusion criterion. In other words, not matching this characteristic definition is equivalent to meeting this criterion.
Short	Whether the characteristic is an inclusion criterion or exclusion criterion
Control	0..1
Type	boolean
[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
28. Extension.extension:definitionReference
Slice Name	definitionReference
Definition	R5: `EvidenceVariable.characteristic.definitionReference` (new:Reference(EvidenceVariable,Group,Evidence))
Short	R5: Defines the characteristic (without using type and value) by a Reference (new)
Comments	Element `EvidenceVariable.characteristic.definitionReference` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionReference` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.definitionReference` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionReference` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
30. Extension.extension:definitionReference.url
Control	1..1
Fixed Value	`definitionReference`
32. Extension.extension:definitionReference.value[x]
Definition	Defines the characteristic using a Reference.
Short	Defines the characteristic (without using type and value) by a Reference
Control	0..1
Type	Reference(Cross-version Profile for R5.EvidenceVariable for use in FHIR R4, EvidenceVariable, Cross-version Profile for R5.Group for use in FHIR R4, Group, Cross-version Profile for R5.Evidence for use in FHIR R4, Evidence)
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
34. Extension.extension:definitionCanonical
Slice Name	definitionCanonical
Definition	R5: `EvidenceVariable.characteristic.definitionCanonical` (new:canonical(EvidenceVariable,Evidence))
Short	R5: Defines the characteristic (without using type and value) by a Canonical (new)
Comments	Element `EvidenceVariable.characteristic.definitionCanonical` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCanonical` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.definitionCanonical` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCanonical` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
36. Extension.extension:definitionCanonical.url
Control	1..1
Fixed Value	`definitionCanonical`
38. Extension.extension:definitionCanonical.value[x]
Definition	Defines the characteristic using Canonical.
Short	Defines the characteristic (without using type and value) by a Canonical
Control	0..1
Type	canonical(Cross-version Profile for R5.EvidenceVariable for use in FHIR R4, EvidenceVariable, Cross-version Profile for R5.Evidence for use in FHIR R4, Evidence)
[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
40. Extension.extension:definitionCodeableConcept
Slice Name	definitionCodeableConcept
Definition	R5: `EvidenceVariable.characteristic.definitionCodeableConcept` (new:CodeableConcept)
Short	R5: Defines the characteristic (without using type and value) by a CodeableConcept (new)
Comments	Element `EvidenceVariable.characteristic.definitionCodeableConcept` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCodeableConcept` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.definitionCodeableConcept` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCodeableConcept` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
42. Extension.extension:definitionCodeableConcept.url
Control	1..1
Fixed Value	`definitionCodeableConcept`
44. Extension.extension:definitionCodeableConcept.value[x]
Definition	Defines the characteristic using CodeableConcept.
Short	Defines the characteristic (without using type and value) by a CodeableConcept
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
46. Extension.extension:definitionExpression
Slice Name	definitionExpression
Definition	R5: `EvidenceVariable.characteristic.definitionExpression` (new:Expression)
Short	R5: Defines the characteristic (without using type and value) by an expression (new)
Comments	Element `EvidenceVariable.characteristic.definitionExpression` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionExpression` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). When another element provides a definition of the characteristic, the definitionExpression content SHALL match the definition (only adding technical concepts necessary for implementation) without changing the meaning.
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.definitionExpression` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionExpression` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
48. Extension.extension:definitionExpression.url
Control	1..1
Fixed Value	`definitionExpression`
50. Extension.extension:definitionExpression.value[x]
Definition	Defines the characteristic using Expression.
Short	Defines the characteristic (without using type and value) by an expression
Comments	When another element provides a definition of the characteristic, the definitionExpression content SHALL match the definition (only adding technical concepts necessary for implementation) without changing the meaning.
Control	0..1
Type	Expression
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
52. Extension.extension:definitionId
Slice Name	definitionId
Definition	R5: `EvidenceVariable.characteristic.definitionId` (new:id)
Short	R5: Defines the characteristic (without using type and value) by an id (new)
Comments	Element `EvidenceVariable.characteristic.definitionId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionId` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.definitionId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionId` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
54. Extension.extension:definitionId.url
Control	1..1
Fixed Value	`definitionId`
56. Extension.extension:definitionId.value[x]
Definition	Defines the characteristic using id.
Short	Defines the characteristic (without using type and value) by an id
Control	0..1
Type	id
[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
58. Extension.extension:definitionByTypeAndValue
Slice Name	definitionByTypeAndValue
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue` (new:BackboneElement)
Short	R5: Defines the characteristic using type and value (new)
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.definitionByTypeAndValue` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
60. Extension.extension:definitionByTypeAndValue.extension
Control	2..*
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
62. Extension.extension:definitionByTypeAndValue.extension:type
Slice Name	type
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.type` (new:CodeableConcept)
Short	R5: Expresses the type of characteristic (new)
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	1..1
Requirements	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
64. Extension.extension:definitionByTypeAndValue.extension:type.url
Control	1..1
Fixed Value	`type`
66. Extension.extension:definitionByTypeAndValue.extension:type.value[x]
Definition	Used to express the type of characteristic.
Short	Expresses the type of characteristic
Control	1..1
Binding	For example codes, see UsageContextType (example to `http://hl7.org/fhir/ValueSet/usage-context-type\|4.0.1`)
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
68. Extension.extension:definitionByTypeAndValue.extension:method
Slice Name	method
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.method` (new:CodeableConcept)
Short	R5: Method for how the characteristic value was determined (new)
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..*
Requirements	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
70. Extension.extension:definitionByTypeAndValue.extension:method.url
Control	1..1
Fixed Value	`method`
72. Extension.extension:definitionByTypeAndValue.extension:method.value[x]
Definition	Method for how the characteristic value was determined.
Short	Method for how the characteristic value was determined
Control	0..1
Binding	For example codes, see R5DefinitionMethodForR4 (0.1.0) (example to `http://hl7.org/fhir/uv/xver/ValueSet/R5-definition-method-for-R4\|0.1.0`)
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
74. Extension.extension:definitionByTypeAndValue.extension:device
Slice Name	device
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.device` (new:Reference(Device,DeviceMetric))
Short	R5: Device used for determining characteristic (new)
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
76. Extension.extension:definitionByTypeAndValue.extension:device.url
Control	1..1
Fixed Value	`device`
78. Extension.extension:definitionByTypeAndValue.extension:device.value[x]
Definition	Device used for determining characteristic.
Short	Device used for determining characteristic
Control	0..1
Type	Reference(Cross-version Profile for R5.Device for use in FHIR R4, Device, Cross-version Profile for R5.DeviceMetric for use in FHIR R4, DeviceMetric)
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
80. Extension.extension:definitionByTypeAndValue.extension:value
Slice Name	value
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` (new:boolean, CodeableConcept, id, Quantity, Range, Reference)
Short	R5: Defines the characteristic when coupled with characteristic.type (new)
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	1..1
Requirements	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
82. Extension.extension:definitionByTypeAndValue.extension:value.url
Control	1..1
Fixed Value	`value`
84. Extension.extension:definitionByTypeAndValue.extension:value.value[x]
Definition	Defines the characteristic when paired with characteristic.type.
Short	Defines the characteristic when coupled with characteristic.type
Control	1..1
Type	Choice of: CodeableConcept, boolean, Quantity, Range, Reference, id
[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
86. Extension.extension:definitionByTypeAndValue.extension:offset
Slice Name	offset
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` (new:CodeableConcept)
Short	R5: Reference point for valueQuantity or valueRange (new)
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
88. Extension.extension:definitionByTypeAndValue.extension:offset.url
Control	1..1
Fixed Value	`offset`
90. Extension.extension:definitionByTypeAndValue.extension:offset.value[x]
Definition	Defines the reference point for comparison when valueQuantity or valueRange is not compared to zero.
Short	Reference point for valueQuantity or valueRange
Control	0..1
Binding	For example codes, see R5CharacteristicOffsetForR4 (0.1.0) (example to `http://hl7.org/fhir/uv/xver/ValueSet/R5-characteristic-offset-for-R4\|0.1.0`)
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
92. Extension.extension:definitionByTypeAndValue.url
Control	1..1
Fixed Value	`definitionByTypeAndValue`
94. Extension.extension:definitionByTypeAndValue.value[x]
Control	0..0
96. Extension.extension:definitionByCombination
Slice Name	definitionByCombination
Definition	R5: `EvidenceVariable.characteristic.definitionByCombination` (new:BackboneElement)
Short	R5: Used to specify how two or more characteristics are combined (new)
Comments	Element `EvidenceVariable.characteristic.definitionByCombination` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.definitionByCombination` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
98. Extension.extension:definitionByCombination.extension
Control	2..*
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
100. Extension.extension:definitionByCombination.extension:code
Slice Name	code
Definition	R5: `EvidenceVariable.characteristic.definitionByCombination.code` (new:code)
Short	R5: all-of \| any-of \| at-least \| at-most \| statistical \| net-effect \| dataset (new)
Comments	Element `EvidenceVariable.characteristic.definitionByCombination.code` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.code` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.code` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	1..1
Requirements	If code is "at-least" or "at-most" then threshold SHALL be used. If code is neither "at-least" nor "at-most" then threshold SHALL NOT be used. Element `EvidenceVariable.characteristic.definitionByCombination.code` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.code` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.code` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
102. Extension.extension:definitionByCombination.extension:code.url
Control	1..1
Fixed Value	`code`
104. Extension.extension:definitionByCombination.extension:code.value[x]
Definition	Used to specify if two or more characteristics are combined with OR or AND.
Short	all-of \| any-of \| at-least \| at-most \| statistical \| net-effect \| dataset
Control	1..1
Binding	The codes SHALL be taken from R5CharacteristicCombinationForR4 (0.1.0) (required to `http://hl7.org/fhir/uv/xver/ValueSet/R5-characteristic-combination-for-R4\|0.1.0`)
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
106. Extension.extension:definitionByCombination.extension:threshold
Slice Name	threshold
Definition	R5: `EvidenceVariable.characteristic.definitionByCombination.threshold` (new:positiveInt)
Short	R5: Provides the value of "n" when "at-least" or "at-most" codes are used (new)
Comments	Element `EvidenceVariable.characteristic.definitionByCombination.threshold` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.threshold` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.threshold` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.definitionByCombination.threshold` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.threshold` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.threshold` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
108. Extension.extension:definitionByCombination.extension:threshold.url
Control	1..1
Fixed Value	`threshold`
110. Extension.extension:definitionByCombination.extension:threshold.value[x]
Definition	Provides the value of "n" when "at-least" or "at-most" codes are used.
Short	Provides the value of "n" when "at-least" or "at-most" codes are used
Control	0..1
Type	positiveInt
[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
112. Extension.extension:definitionByCombination.extension:characteristic
Slice Name	characteristic
Definition	R5: `EvidenceVariable.characteristic.definitionByCombination.characteristic` (new:EvidenceVariable.characteristic)
Short	R5: A defining factor of the characteristic (new)
Comments	Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	1..*
Requirements	Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
114. Extension.extension:definitionByCombination.extension:characteristic.url
Control	1..1
Fixed Value	`http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic`
116. Extension.extension:definitionByCombination.extension:characteristic.value[x]
Control	0..0
118. Extension.extension:definitionByCombination.url
Control	1..1
Fixed Value	`definitionByCombination`
120. Extension.extension:definitionByCombination.value[x]
Control	0..0
122. Extension.extension:instances
Slice Name	instances
Definition	R5: `EvidenceVariable.characteristic.instances[x]` (new:Quantity, Range)
Short	R5: Number of occurrences meeting the characteristic (new)
Comments	Element `EvidenceVariable.characteristic.instances[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.instances[x]` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.instances[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.instances[x]` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
124. Extension.extension:instances.url
Control	1..1
Fixed Value	`instances`
126. Extension.extension:instances.value[x]
Definition	Number of occurrences meeting the characteristic.
Short	Number of occurrences meeting the characteristic
Control	0..1
Type	Choice of: Quantity, Range
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
128. Extension.extension:duration
Slice Name	duration
Definition	R5: `EvidenceVariable.characteristic.duration[x]` (new:Quantity, Range)
Short	R5: Length of time in which the characteristic is met (new)
Comments	Element `EvidenceVariable.characteristic.duration[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.duration[x]` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.duration[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.duration[x]` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
130. Extension.extension:duration.url
Control	1..1
Fixed Value	`duration`
132. Extension.extension:duration.value[x]
Definition	Length of time in which the characteristic is met.
Short	Length of time in which the characteristic is met
Control	0..1
Type	Choice of: Quantity, Range
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
134. Extension.extension:timeFromEvent
Slice Name	timeFromEvent
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent`
Short	R5: Timing in which the characteristic is determined
Comments	Element `EvidenceVariable.characteristic.timeFromEvent` is mapped to FHIR R4 element `EvidenceVariable.characteristic.timeFromStart` as `SourceIsBroaderThanTarget`.
Control	0..*
Requirements	Element `EvidenceVariable.characteristic.timeFromEvent` is mapped to FHIR R4 element `EvidenceVariable.characteristic.timeFromStart` as `SourceIsBroaderThanTarget`.
136. Extension.extension:timeFromEvent.extension
Control	0..*
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
138. Extension.extension:timeFromEvent.extension:description
Slice Name	description
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.description` (new:markdown)
Short	R5: Human readable description (new)
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.description` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.description` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.timeFromEvent.description` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.description` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
140. Extension.extension:timeFromEvent.extension:description.url
Control	1..1
Fixed Value	`description`
142. Extension.extension:timeFromEvent.extension:description.value[x]
Definition	Human readable description.
Short	Human readable description
Control	0..1
Type	markdown
[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
144. Extension.extension:timeFromEvent.extension:note
Slice Name	note
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.note` (new:Annotation)
Short	R5: Used for footnotes or explanatory notes (new)
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.note` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.note` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..*
Requirements	Element `EvidenceVariable.characteristic.timeFromEvent.note` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.note` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
146. Extension.extension:timeFromEvent.extension:note.url
Control	1..1
Fixed Value	`note`
148. Extension.extension:timeFromEvent.extension:note.value[x]
Definition	A human-readable string to clarify or explain concepts about the timeFromEvent.
Short	Used for footnotes or explanatory notes
Control	0..1
Type	Annotation
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
150. Extension.extension:timeFromEvent.extension:event
Slice Name	event
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.event[x]` (new:CodeableConcept, dateTime, id, Reference)
Short	R5: The event used as a base point (reference point) in time (new)
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.event[x]` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.event[x]` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.timeFromEvent.event[x]` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.event[x]` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
152. Extension.extension:timeFromEvent.extension:event.url
Control	1..1
Fixed Value	`event`
154. Extension.extension:timeFromEvent.extension:event.value[x]
Definition	The event used as a base point (reference point) in time.
Short	The event used as a base point (reference point) in time
Control	0..1
Binding	For example codes, see R5EvidenceVariableEventForR4 (0.1.0) (example to `http://hl7.org/fhir/uv/xver/ValueSet/R5-evidence-variable-event-for-R4\|0.1.0`)
Type	Choice of: CodeableConcept, Reference, dateTime, id
[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
156. Extension.extension:timeFromEvent.extension:quantity
Slice Name	quantity
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.quantity` (new:Quantity)
Short	R5: Used to express the observation at a defined amount of time before or after the event (new)
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.quantity` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.quantity` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.timeFromEvent.quantity` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.quantity` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
158. Extension.extension:timeFromEvent.extension:quantity.url
Control	1..1
Fixed Value	`quantity`
160. Extension.extension:timeFromEvent.extension:quantity.value[x]
Definition	Used to express the observation at a defined amount of time before or after the event.
Short	Used to express the observation at a defined amount of time before or after the event
Control	0..1
Type	Quantity
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
162. Extension.extension:timeFromEvent.extension:range
Slice Name	range
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.range` (new:Range)
Short	R5: Used to express the observation within a period before and/or after the event (new)
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.range` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.range` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..1
Requirements	Element `EvidenceVariable.characteristic.timeFromEvent.range` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.range` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
164. Extension.extension:timeFromEvent.extension:range.url
Control	1..1
Fixed Value	`range`
166. Extension.extension:timeFromEvent.extension:range.value[x]
Definition	Used to express the observation within a period before and/or after the event.
Short	Used to express the observation within a period before and/or after the event
Control	0..1
Type	Range
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
168. Extension.extension:timeFromEvent.url
Control	1..1
Fixed Value	`timeFromEvent`
170. Extension.extension:timeFromEvent.value[x]
Control	0..0
172. Extension.url
Control	1..1
Fixed Value	`http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic`
174. Extension.value[x]
Control	0..0

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

0. Extension
Definition	R5: `EvidenceVariable.characteristic`
Short	R5: A defining factor of the EvidenceVariable
Comments	Element `EvidenceVariable.characteristic` is mapped to FHIR R4 element `EvidenceVariable.characteristic` as `Equivalent`. Characteristics can be defined flexibly to accommodate different use cases for membership criteria, ranging from simple codes, all the way to using an expression language to express the criteria.
Control	0..* This element is affected by the following invariants: ele-1
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
Type	string
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	0..*
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:linkId
Slice Name	linkId
Definition	R5: `EvidenceVariable.characteristic.linkId` (new:id)
Short	R5: Label for internal linking (new)
Comments	Element `EvidenceVariable.characteristic.linkId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.linkId` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.linkId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.linkId` has no mapping targets in FHIR R4. 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:linkId.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
10. Extension.extension:linkId.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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:linkId.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	`linkId`
14. Extension.extension:linkId.value[x]
Definition	Label used for when a characteristic refers to another characteristic.
Short	Label for internal linking
Control	0..1
Type	id
[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:description
Slice Name	description
Definition	R5: `EvidenceVariable.characteristic.description`
Short	R5: description
Comments	Element `EvidenceVariable.characteristic.description` is mapped to FHIR R4 element `EvidenceVariable.characteristic.description` as `Equivalent`.
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Requirements	Need to be able to describe characteristics in natural language so that end users can understand the criteria. Element `EvidenceVariable.characteristic.description` is mapped to FHIR R4 element `EvidenceVariable.characteristic.description` as `Equivalent`.
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: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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
20. Extension.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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: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`
24. Extension.extension:description.value[x]
Definition	A short, natural language description of the characteristic that could be used to communicate the criteria to an end-user.
Short	Natural language description of the characteristic
Control	0..1
Type	markdown
[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:note
Slice Name	note
Definition	R5: `EvidenceVariable.characteristic.note` (new:Annotation)
Short	R5: Used for footnotes or explanatory notes (new)
Comments	Element `EvidenceVariable.characteristic.note` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.note` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.note` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.note` has no mapping targets in FHIR R4. 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:note.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
30. Extension.extension:note.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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:note.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	`note`
34. Extension.extension:note.value[x]
Definition	A human-readable string to clarify or explain concepts about the characteristic.
Short	Used for footnotes or explanatory notes
Control	0..1
Type	Annotation
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
36. Extension.extension:exclude
Slice Name	exclude
Definition	R5: `EvidenceVariable.characteristic.exclude`
Short	R5: Whether the characteristic is an inclusion criterion or exclusion criterion
Comments	Element `EvidenceVariable.characteristic.exclude` is mapped to FHIR R4 element `EvidenceVariable.characteristic.exclude` as `Equivalent`.
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.exclude` is mapped to FHIR R4 element `EvidenceVariable.characteristic.exclude` as `Equivalent`.
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:exclude.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
40. Extension.extension:exclude.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
42. Extension.extension:exclude.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	`exclude`
44. Extension.extension:exclude.value[x]
Definition	When true, this characteristic is an exclusion criterion. In other words, not matching this characteristic definition is equivalent to meeting this criterion.
Short	Whether the characteristic is an inclusion criterion or exclusion criterion
Control	0..1
Type	boolean
[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())`)
46. Extension.extension:definitionReference
Slice Name	definitionReference
Definition	R5: `EvidenceVariable.characteristic.definitionReference` (new:Reference(EvidenceVariable,Group,Evidence))
Short	R5: Defines the characteristic (without using type and value) by a Reference (new)
Comments	Element `EvidenceVariable.characteristic.definitionReference` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionReference` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionReference` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionReference` has no mapping targets in FHIR R4. 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()`)
48. Extension.extension:definitionReference.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
50. Extension.extension:definitionReference.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
52. Extension.extension:definitionReference.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	`definitionReference`
54. Extension.extension:definitionReference.value[x]
Definition	Defines the characteristic using a Reference.
Short	Defines the characteristic (without using type and value) by a Reference
Control	0..1
Type	Reference(Cross-version Profile for R5.EvidenceVariable for use in FHIR R4, EvidenceVariable, Cross-version Profile for R5.Group for use in FHIR R4, Group, Cross-version Profile for R5.Evidence for use in FHIR R4, Evidence)
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
56. Extension.extension:definitionCanonical
Slice Name	definitionCanonical
Definition	R5: `EvidenceVariable.characteristic.definitionCanonical` (new:canonical(EvidenceVariable,Evidence))
Short	R5: Defines the characteristic (without using type and value) by a Canonical (new)
Comments	Element `EvidenceVariable.characteristic.definitionCanonical` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCanonical` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionCanonical` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCanonical` has no mapping targets in FHIR R4. 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()`)
58. Extension.extension:definitionCanonical.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
60. Extension.extension:definitionCanonical.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
62. Extension.extension:definitionCanonical.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	`definitionCanonical`
64. Extension.extension:definitionCanonical.value[x]
Definition	Defines the characteristic using Canonical.
Short	Defines the characteristic (without using type and value) by a Canonical
Control	0..1
Type	canonical(Cross-version Profile for R5.EvidenceVariable for use in FHIR R4, EvidenceVariable, Cross-version Profile for R5.Evidence for use in FHIR R4, Evidence)
[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())`)
66. Extension.extension:definitionCodeableConcept
Slice Name	definitionCodeableConcept
Definition	R5: `EvidenceVariable.characteristic.definitionCodeableConcept` (new:CodeableConcept)
Short	R5: Defines the characteristic (without using type and value) by a CodeableConcept (new)
Comments	Element `EvidenceVariable.characteristic.definitionCodeableConcept` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCodeableConcept` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionCodeableConcept` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionCodeableConcept` has no mapping targets in FHIR R4. 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()`)
68. Extension.extension:definitionCodeableConcept.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
70. Extension.extension:definitionCodeableConcept.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
72. Extension.extension:definitionCodeableConcept.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	`definitionCodeableConcept`
74. Extension.extension:definitionCodeableConcept.value[x]
Definition	Defines the characteristic using CodeableConcept.
Short	Defines the characteristic (without using type and value) by a CodeableConcept
Control	0..1
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
76. Extension.extension:definitionExpression
Slice Name	definitionExpression
Definition	R5: `EvidenceVariable.characteristic.definitionExpression` (new:Expression)
Short	R5: Defines the characteristic (without using type and value) by an expression (new)
Comments	Element `EvidenceVariable.characteristic.definitionExpression` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionExpression` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). When another element provides a definition of the characteristic, the definitionExpression content SHALL match the definition (only adding technical concepts necessary for implementation) without changing the meaning.
Control	0..1
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.definitionExpression` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionExpression` has no mapping targets in FHIR R4. 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()`)
78. Extension.extension:definitionExpression.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
80. Extension.extension:definitionExpression.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
82. Extension.extension:definitionExpression.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	`definitionExpression`
84. Extension.extension:definitionExpression.value[x]
Definition	Defines the characteristic using Expression.
Short	Defines the characteristic (without using type and value) by an expression
Comments	When another element provides a definition of the characteristic, the definitionExpression content SHALL match the definition (only adding technical concepts necessary for implementation) without changing the meaning.
Control	0..1
Type	Expression
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
86. Extension.extension:definitionId
Slice Name	definitionId
Definition	R5: `EvidenceVariable.characteristic.definitionId` (new:id)
Short	R5: Defines the characteristic (without using type and value) by an id (new)
Comments	Element `EvidenceVariable.characteristic.definitionId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionId` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionId` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionId` has no mapping targets in FHIR R4. 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()`)
88. Extension.extension:definitionId.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
90. Extension.extension:definitionId.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
92. Extension.extension:definitionId.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	`definitionId`
94. Extension.extension:definitionId.value[x]
Definition	Defines the characteristic using id.
Short	Defines the characteristic (without using type and value) by an id
Control	0..1
Type	id
[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())`)
96. Extension.extension:definitionByTypeAndValue
Slice Name	definitionByTypeAndValue
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue` (new:BackboneElement)
Short	R5: Defines the characteristic using type and value (new)
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByTypeAndValue` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue` has no mapping targets in FHIR R4. 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:definitionByTypeAndValue.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
100. Extension.extension:definitionByTypeAndValue.extension
Definition	An Extension
Short	Extension
Control	2..*
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
102. Extension.extension:definitionByTypeAndValue.extension:type
Slice Name	type
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.type` (new:CodeableConcept)
Short	R5: Expresses the type of characteristic (new)
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByTypeAndValue.type` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.type` has no mapping targets in FHIR R4. 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()`)
104. Extension.extension:definitionByTypeAndValue.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
106. Extension.extension:definitionByTypeAndValue.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
108. Extension.extension:definitionByTypeAndValue.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`
110. Extension.extension:definitionByTypeAndValue.extension:type.value[x]
Definition	Used to express the type of characteristic.
Short	Expresses the type of characteristic
Control	1..1
Binding	For example codes, see UsageContextType (example to `http://hl7.org/fhir/ValueSet/usage-context-type\|4.0.1`)
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
112. Extension.extension:definitionByTypeAndValue.extension:method
Slice Name	method
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.method` (new:CodeableConcept)
Short	R5: Method for how the characteristic value was determined (new)
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.method` has no mapping targets in FHIR R4. 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()`)
114. Extension.extension:definitionByTypeAndValue.extension:method.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
116. Extension.extension:definitionByTypeAndValue.extension:method.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
118. Extension.extension:definitionByTypeAndValue.extension:method.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	`method`
120. Extension.extension:definitionByTypeAndValue.extension:method.value[x]
Definition	Method for how the characteristic value was determined.
Short	Method for how the characteristic value was determined
Control	0..1
Binding	For example codes, see R5DefinitionMethodForR4 (0.1.0) (example to `http://hl7.org/fhir/uv/xver/ValueSet/R5-definition-method-for-R4\|0.1.0`)
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
122. Extension.extension:definitionByTypeAndValue.extension:device
Slice Name	device
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.device` (new:Reference(Device,DeviceMetric))
Short	R5: Device used for determining characteristic (new)
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByTypeAndValue.device` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.device` has no mapping targets in FHIR R4. 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()`)
124. Extension.extension:definitionByTypeAndValue.extension:device.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
126. Extension.extension:definitionByTypeAndValue.extension:device.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
128. Extension.extension:definitionByTypeAndValue.extension:device.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	`device`
130. Extension.extension:definitionByTypeAndValue.extension:device.value[x]
Definition	Device used for determining characteristic.
Short	Device used for determining characteristic
Control	0..1
Type	Reference(Cross-version Profile for R5.Device for use in FHIR R4, Device, Cross-version Profile for R5.DeviceMetric for use in FHIR R4, DeviceMetric)
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
132. Extension.extension:definitionByTypeAndValue.extension:value
Slice Name	value
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` (new:boolean, CodeableConcept, id, Quantity, Range, Reference)
Short	R5: Defines the characteristic when coupled with characteristic.type (new)
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]` has no mapping targets in FHIR R4. 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()`)
134. Extension.extension:definitionByTypeAndValue.extension:value.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
136. Extension.extension:definitionByTypeAndValue.extension:value.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
138. Extension.extension:definitionByTypeAndValue.extension:value.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	`value`
140. Extension.extension:definitionByTypeAndValue.extension:value.value[x]
Definition	Defines the characteristic when paired with characteristic.type.
Short	Defines the characteristic when coupled with characteristic.type
Control	1..1
Type	Choice of: CodeableConcept, boolean, Quantity, Range, Reference, id
[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())`)
142. Extension.extension:definitionByTypeAndValue.extension:offset
Slice Name	offset
Definition	R5: `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` (new:CodeableConcept)
Short	R5: Reference point for valueQuantity or valueRange (new)
Comments	Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByTypeAndValue` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByTypeAndValue.offset` has no mapping targets in FHIR R4. 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()`)
144. Extension.extension:definitionByTypeAndValue.extension:offset.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
146. Extension.extension:definitionByTypeAndValue.extension:offset.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
148. Extension.extension:definitionByTypeAndValue.extension:offset.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	`offset`
150. Extension.extension:definitionByTypeAndValue.extension:offset.value[x]
Definition	Defines the reference point for comparison when valueQuantity or valueRange is not compared to zero.
Short	Reference point for valueQuantity or valueRange
Control	0..1
Binding	For example codes, see R5CharacteristicOffsetForR4 (0.1.0) (example to `http://hl7.org/fhir/uv/xver/ValueSet/R5-characteristic-offset-for-R4\|0.1.0`)
Type	CodeableConcept
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
152. Extension.extension:definitionByTypeAndValue.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	`definitionByTypeAndValue`
154. Extension.extension:definitionByTypeAndValue.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
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, 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())`)
156. Extension.extension:definitionByCombination
Slice Name	definitionByCombination
Definition	R5: `EvidenceVariable.characteristic.definitionByCombination` (new:BackboneElement)
Short	R5: Used to specify how two or more characteristics are combined (new)
Comments	Element `EvidenceVariable.characteristic.definitionByCombination` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByCombination` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination` has no mapping targets in FHIR R4. 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()`)
158. Extension.extension:definitionByCombination.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
160. Extension.extension:definitionByCombination.extension
Definition	An Extension
Short	Extension
Control	2..*
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
162. Extension.extension:definitionByCombination.extension:code
Slice Name	code
Definition	R5: `EvidenceVariable.characteristic.definitionByCombination.code` (new:code)
Short	R5: all-of \| any-of \| at-least \| at-most \| statistical \| net-effect \| dataset (new)
Comments	Element `EvidenceVariable.characteristic.definitionByCombination.code` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.code` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.code` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	1..1
Type	Extension
Is Modifier	false
Summary	false
Requirements	If code is "at-least" or "at-most" then threshold SHALL be used. If code is neither "at-least" nor "at-most" then threshold SHALL NOT be used. Element `EvidenceVariable.characteristic.definitionByCombination.code` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.code` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.code` has no mapping targets in FHIR R4. 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()`)
164. Extension.extension:definitionByCombination.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
166. Extension.extension:definitionByCombination.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
168. Extension.extension:definitionByCombination.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`
170. Extension.extension:definitionByCombination.extension:code.value[x]
Definition	Used to specify if two or more characteristics are combined with OR or AND.
Short	all-of \| any-of \| at-least \| at-most \| statistical \| net-effect \| dataset
Control	1..1
Binding	The codes SHALL be taken from R5CharacteristicCombinationForR4 (0.1.0) (required to `http://hl7.org/fhir/uv/xver/ValueSet/R5-characteristic-combination-for-R4\|0.1.0`)
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())`)
172. Extension.extension:definitionByCombination.extension:threshold
Slice Name	threshold
Definition	R5: `EvidenceVariable.characteristic.definitionByCombination.threshold` (new:positiveInt)
Short	R5: Provides the value of "n" when "at-least" or "at-most" codes are used (new)
Comments	Element `EvidenceVariable.characteristic.definitionByCombination.threshold` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.threshold` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.threshold` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.definitionByCombination.threshold` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.threshold` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.threshold` has no mapping targets in FHIR R4. 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()`)
174. Extension.extension:definitionByCombination.extension:threshold.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
176. Extension.extension:definitionByCombination.extension:threshold.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
178. Extension.extension:definitionByCombination.extension:threshold.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	`threshold`
180. Extension.extension:definitionByCombination.extension:threshold.value[x]
Definition	Provides the value of "n" when "at-least" or "at-most" codes are used.
Short	Provides the value of "n" when "at-least" or "at-most" codes are used
Control	0..1
Type	positiveInt
[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())`)
182. Extension.extension:definitionByCombination.extension:characteristic
Slice Name	characteristic
Definition	R5: `EvidenceVariable.characteristic.definitionByCombination.characteristic` (new:EvidenceVariable.characteristic)
Short	R5: A defining factor of the characteristic (new)
Comments	Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	1..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` is part of an existing definition because parent element `EvidenceVariable.characteristic.definitionByCombination` requires a cross-version extension. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.definitionByCombination.characteristic` has no mapping targets in FHIR R4. 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()`)
184. Extension.extension:definitionByCombination.extension:characteristic.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
186. Extension.extension:definitionByCombination.extension:characteristic.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
188. Extension.extension:definitionByCombination.extension:characteristic.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/5.0/StructureDefinition/extension-EvidenceVariable.characteristic`
190. Extension.extension:definitionByCombination.extension:characteristic.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
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, 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())`)
192. Extension.extension:definitionByCombination.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	`definitionByCombination`
194. Extension.extension:definitionByCombination.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
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, 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())`)
196. Extension.extension:instances
Slice Name	instances
Definition	R5: `EvidenceVariable.characteristic.instances[x]` (new:Quantity, Range)
Short	R5: Number of occurrences meeting the characteristic (new)
Comments	Element `EvidenceVariable.characteristic.instances[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.instances[x]` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.instances[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.instances[x]` has no mapping targets in FHIR R4. 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()`)
198. Extension.extension:instances.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
200. Extension.extension:instances.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
202. Extension.extension:instances.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	`instances`
204. Extension.extension:instances.value[x]
Definition	Number of occurrences meeting the characteristic.
Short	Number of occurrences meeting the characteristic
Control	0..1
Type	Choice of: Quantity, Range
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
206. Extension.extension:duration
Slice Name	duration
Definition	R5: `EvidenceVariable.characteristic.duration[x]` (new:Quantity, Range)
Short	R5: Length of time in which the characteristic is met (new)
Comments	Element `EvidenceVariable.characteristic.duration[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.duration[x]` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.duration[x]` has a context of EvidenceVariable.characteristic based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.duration[x]` has no mapping targets in FHIR R4. 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()`)
208. Extension.extension:duration.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
210. Extension.extension:duration.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
212. Extension.extension:duration.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	`duration`
214. Extension.extension:duration.value[x]
Definition	Length of time in which the characteristic is met.
Short	Length of time in which the characteristic is met
Control	0..1
Type	Choice of: Quantity, Range
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
216. Extension.extension:timeFromEvent
Slice Name	timeFromEvent
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent`
Short	R5: Timing in which the characteristic is determined
Comments	Element `EvidenceVariable.characteristic.timeFromEvent` is mapped to FHIR R4 element `EvidenceVariable.characteristic.timeFromStart` as `SourceIsBroaderThanTarget`.
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.timeFromEvent` is mapped to FHIR R4 element `EvidenceVariable.characteristic.timeFromStart` as `SourceIsBroaderThanTarget`.
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()`)
218. Extension.extension:timeFromEvent.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
220. Extension.extension:timeFromEvent.extension
Definition	An Extension
Short	Extension
Control	0..*
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
222. Extension.extension:timeFromEvent.extension:description
Slice Name	description
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.description` (new:markdown)
Short	R5: Human readable description (new)
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.description` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.description` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.timeFromEvent.description` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.description` has no mapping targets in FHIR R4. 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()`)
224. Extension.extension:timeFromEvent.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
226. Extension.extension:timeFromEvent.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
228. Extension.extension:timeFromEvent.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`
230. Extension.extension:timeFromEvent.extension:description.value[x]
Definition	Human readable description.
Short	Human readable description
Control	0..1
Type	markdown
[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())`)
232. Extension.extension:timeFromEvent.extension:note
Slice Name	note
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.note` (new:Annotation)
Short	R5: Used for footnotes or explanatory notes (new)
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.note` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.note` has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).
Control	0..*
Type	Extension
Is Modifier	false
Summary	false
Requirements	Element `EvidenceVariable.characteristic.timeFromEvent.note` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.note` has no mapping targets in FHIR R4. 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()`)
234. Extension.extension:timeFromEvent.extension:note.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
236. Extension.extension:timeFromEvent.extension:note.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
238. Extension.extension:timeFromEvent.extension:note.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	`note`
240. Extension.extension:timeFromEvent.extension:note.value[x]
Definition	A human-readable string to clarify or explain concepts about the timeFromEvent.
Short	Used for footnotes or explanatory notes
Control	0..1
Type	Annotation
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
242. Extension.extension:timeFromEvent.extension:event
Slice Name	event
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.event[x]` (new:CodeableConcept, dateTime, id, Reference)
Short	R5: The event used as a base point (reference point) in time (new)
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.event[x]` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.event[x]` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.timeFromEvent.event[x]` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.event[x]` has no mapping targets in FHIR R4. 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()`)
244. Extension.extension:timeFromEvent.extension:event.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
246. Extension.extension:timeFromEvent.extension:event.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
248. Extension.extension:timeFromEvent.extension:event.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	`event`
250. Extension.extension:timeFromEvent.extension:event.value[x]
Definition	The event used as a base point (reference point) in time.
Short	The event used as a base point (reference point) in time
Control	0..1
Binding	For example codes, see R5EvidenceVariableEventForR4 (0.1.0) (example to `http://hl7.org/fhir/uv/xver/ValueSet/R5-evidence-variable-event-for-R4\|0.1.0`)
Type	Choice of: CodeableConcept, Reference, dateTime, id
[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())`)
252. Extension.extension:timeFromEvent.extension:quantity
Slice Name	quantity
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.quantity` (new:Quantity)
Short	R5: Used to express the observation at a defined amount of time before or after the event (new)
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.quantity` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.quantity` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.timeFromEvent.quantity` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.quantity` has no mapping targets in FHIR R4. 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()`)
254. Extension.extension:timeFromEvent.extension:quantity.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
256. Extension.extension:timeFromEvent.extension:quantity.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
258. Extension.extension:timeFromEvent.extension:quantity.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	`quantity`
260. Extension.extension:timeFromEvent.extension:quantity.value[x]
Definition	Used to express the observation at a defined amount of time before or after the event.
Short	Used to express the observation at a defined amount of time before or after the event
Control	0..1
Type	Quantity
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
262. Extension.extension:timeFromEvent.extension:range
Slice Name	range
Definition	R5: `EvidenceVariable.characteristic.timeFromEvent.range` (new:Range)
Short	R5: Used to express the observation within a period before and/or after the event (new)
Comments	Element `EvidenceVariable.characteristic.timeFromEvent.range` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.range` has no mapping targets in FHIR R4. 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 `EvidenceVariable.characteristic.timeFromEvent.range` has a context of EvidenceVariable.characteristic.timeFromStart based on following the parent source element upwards and mapping to `EvidenceVariable`. Element `EvidenceVariable.characteristic.timeFromEvent.range` has no mapping targets in FHIR R4. 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()`)
264. Extension.extension:timeFromEvent.extension:range.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
Type	string
Is Modifier	false
XML Format	In the XML format, this property is represented as an attribute.
Summary	false
266. Extension.extension:timeFromEvent.extension:range.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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.
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
268. Extension.extension:timeFromEvent.extension:range.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	`range`
270. Extension.extension:timeFromEvent.extension:range.value[x]
Definition	Used to express the observation within a period before and/or after the event.
Short	Used to express the observation within a period before and/or after the event
Control	0..1
Type	Range
[x] Note	SeeChoice of Data Typesfor further information about how to use [x]
Is Modifier	false
Summary	false
Invariants	ele-1: All FHIR elements must have a @value or children (`hasValue() or (children().count() > id.count())`)
272. Extension.extension:timeFromEvent.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	`timeFromEvent`
274. Extension.extension:timeFromEvent.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
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, 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())`)
276. 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/5.0/StructureDefinition/extension-EvidenceVariable.characteristic`
278. 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
Type	Choice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, Reference, SampledData, Signature, Timing, ContactDetail, Contributor, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, 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())`)