Evidence Based Medicine on FHIR Implementation Guide
1.0.0-ballot - ballot International flag

Evidence Based Medicine on FHIR Implementation Guide, published by HL7 International / Clinical Decision Support. This guide is not an authorized publication; it is the continuous build for version 1.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/ebm/ and changes regularly. See the Directory of published versions

Extension: CharacteristicTiming - Detailed Descriptions

Page standards status: Draft Maturity Level: 1

Definitions for the characteristic-timing extension.

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

0. Extension
Definition

Timing in which the characteristic is determined.

ShortTiming in which the characteristic is determined
2. Extension.extension:contextReference
Slice NamecontextReference
Control0..1
4. Extension.extension:contextReference.extension
Control0..0
6. Extension.extension:contextReference.url
Fixed ValuecontextReference
8. Extension.extension:contextReference.value[x]
Definition

The specific event occurrence or resource context used as a base point (reference point) in time. This establishes the context in which the path is evaluated.

ShortThe specific event occurrence or resource context used as a base point (reference point) in time
TypeReference
[x] NoteSee Choice of Data Types for further information about how to use [x]
10. Extension.extension:contextDefinition
Slice NamecontextDefinition
Control0..1
12. Extension.extension:contextDefinition.extension
Control0..0
14. Extension.extension:contextDefinition.url
Fixed ValuecontextDefinition
16. Extension.extension:contextDefinition.value[x]
Definition

The type of event used as a base point. Instances of this definition will establish the context for evaluating the path to determine the base time for the offset.

ShortThe type of event used as a base point
Typecanonical
[x] NoteSee Choice of Data Types for further information about how to use [x]
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
18. Extension.extension:contextPath
Slice NamecontextPath
Control0..1
20. Extension.extension:contextPath.extension
Control0..0
22. Extension.extension:contextPath.url
Fixed ValuecontextPath
24. Extension.extension:contextPath.value[x]
Definition

Path to the element defining the point in time. Any valid FHIRPath expression.

ShortPath to the element defining the point in time
Typestring
[x] NoteSee Choice of Data Types for further information about how to use [x]
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
26. Extension.extension:contextCode
Slice NamecontextCode
Control0..1
28. Extension.extension:contextCode.extension
Control0..0
30. Extension.extension:contextCode.url
Fixed ValuecontextCode
32. Extension.extension:contextCode.value[x]
Definition

Coded representation of the event used as a base point (reference point) in time.

ShortCoded representation of the event used as a base point (reference point) in time
TypeCodeableConcept
[x] NoteSee Choice of Data Types for further information about how to use [x]
34. Extension.extension:offset
Slice Nameoffset
Control0..1
36. Extension.extension:offset.extension
Control0..0
38. Extension.extension:offset.url
Fixed Valueoffset
40. Extension.extension:offset.value[x]
Definition

An offset or offset range before (negative values) or after (positive values) the event. Range is limited to time-valued quantities (Durations).

ShortAn offset or offset range before (negative values) or after (positive values) the event
TypeChoice of: Duration, Range
[x] NoteSee Choice of Data Types for further information about how to use [x]
42. Extension.extension:text
Slice Nametext
Control0..1
44. Extension.extension:text.extension
Control0..0
46. Extension.extension:text.url
Fixed Valuetext
48. Extension.extension:text.value[x]
Definition

Free-text (human-readable) description.

ShortaFree-text description
Typestring
[x] NoteSee Choice of Data Types for further information about how to use [x]
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
50. Extension.url
Fixed Valuehttp://hl7.org/fhir/uv/ebm/StructureDefinition/characteristic-timing
52. Extension.value[x]
Control0..0

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

0. Extension
Definition

Timing in which the characteristic is determined.


Optional Extension Element - found in all resources.

ShortTiming in which the characteristic is determinedOptional Extensions Element
Control0..*
Is Modifierfalse
Invariantsele-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:contextReference
Slice NamecontextReference
Definition

An Extension

ShortExtensionAdditional content defined by implementations
Control0..1*
TypeExtension
Is Modifierfalse
Summaryfalse
Invariantsele-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())
4. Extension.extension:contextReference.extension
Definition

An Extension


May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

ShortExtensionAdditional 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.

Control0..0*
TypeExtension
Is Modifierfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-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())
SlicingThis 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
  • 6. Extension.extension:contextReference.url
    Definition

    Source of the definition for the extension code - a logical name or a URL.

    Shortidentifies 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.

    Control1..1
    Typeuri
    Is Modifierfalse
    XML FormatIn the XML format, this property is represented as an attribute.
    Summaryfalse
    Fixed ValuecontextReference
    8. Extension.extension:contextReference.value[x]
    Definition

    The specific event occurrence or resource context used as a base point (reference point) in time. This establishes the context in which the path is evaluated.


    Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

    ShortThe specific event occurrence or resource context used as a base point (reference point) in timeValue of extension
    Control0..1
    This element is affected by the following invariants: ext-1
    TypeReference, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, code, string, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
    [x] NoteSee Choice of Data Types for further information about how to use [x]
    Is Modifierfalse
    Summaryfalse
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    10. Extension.extension:contextDefinition
    Slice NamecontextDefinition
    Definition

    An Extension

    ShortExtensionAdditional content defined by implementations
    Control0..1*
    TypeExtension
    Is Modifierfalse
    Summaryfalse
    Invariantsele-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:contextDefinition.extension
    Definition

    An Extension


    May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

    ShortExtensionAdditional 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.

    Control0..0*
    TypeExtension
    Is Modifierfalse
    Summaryfalse
    Alternate Namesextensions, user content
    Invariantsele-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())
    SlicingThis 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
    • 14. Extension.extension:contextDefinition.url
      Definition

      Source of the definition for the extension code - a logical name or a URL.

      Shortidentifies 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.

      Control1..1
      Typeuri
      Is Modifierfalse
      XML FormatIn the XML format, this property is represented as an attribute.
      Summaryfalse
      Fixed ValuecontextDefinition
      16. Extension.extension:contextDefinition.value[x]
      Definition

      The type of event used as a base point. Instances of this definition will establish the context for evaluating the path to determine the base time for the offset.


      Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

      ShortThe type of event used as a base pointValue of extension
      Control0..1
      This element is affected by the following invariants: ext-1
      Typecanonical, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, code, string, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
      [x] NoteSee Choice of Data Types for further information about how to use [x]
      Is Modifierfalse
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      Summaryfalse
      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
      18. Extension.extension:contextPath
      Slice NamecontextPath
      Definition

      An Extension

      ShortExtensionAdditional content defined by implementations
      Control0..1*
      TypeExtension
      Is Modifierfalse
      Summaryfalse
      Invariantsele-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())
      20. Extension.extension:contextPath.extension
      Definition

      An Extension


      May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

      ShortExtensionAdditional 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.

      Control0..0*
      TypeExtension
      Is Modifierfalse
      Summaryfalse
      Alternate Namesextensions, user content
      Invariantsele-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())
      SlicingThis 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:contextPath.url
        Definition

        Source of the definition for the extension code - a logical name or a URL.

        Shortidentifies 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.

        Control1..1
        Typeuri
        Is Modifierfalse
        XML FormatIn the XML format, this property is represented as an attribute.
        Summaryfalse
        Fixed ValuecontextPath
        24. Extension.extension:contextPath.value[x]
        Definition

        Path to the element defining the point in time. Any valid FHIRPath expression.


        Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

        ShortPath to the element defining the point in timeValue of extension
        Control0..1
        This element is affected by the following invariants: ext-1
        Typestring, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, code, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
        [x] NoteSee Choice of Data Types for further information about how to use [x]
        Is Modifierfalse
        Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
        Summaryfalse
        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
        26. Extension.extension:contextCode
        Slice NamecontextCode
        Definition

        An Extension

        ShortExtensionAdditional content defined by implementations
        Control0..1*
        TypeExtension
        Is Modifierfalse
        Summaryfalse
        Invariantsele-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:contextCode.extension
        Definition

        An Extension


        May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

        ShortExtensionAdditional 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.

        Control0..0*
        TypeExtension
        Is Modifierfalse
        Summaryfalse
        Alternate Namesextensions, user content
        Invariantsele-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())
        SlicingThis 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
        • 30. Extension.extension:contextCode.url
          Definition

          Source of the definition for the extension code - a logical name or a URL.

          Shortidentifies 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.

          Control1..1
          Typeuri
          Is Modifierfalse
          XML FormatIn the XML format, this property is represented as an attribute.
          Summaryfalse
          Fixed ValuecontextCode
          32. Extension.extension:contextCode.value[x]
          Definition

          Coded representation of 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).

          ShortCoded representation of the event used as a base point (reference point) in timeValue of extension
          Control0..1
          This element is affected by the following invariants: ext-1
          TypeCodeableConcept, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, ParameterDefinition, dateTime, code, string, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
          [x] NoteSee Choice of Data Types for further information about how to use [x]
          Is Modifierfalse
          Summaryfalse
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          34. Extension.extension:offset
          Slice Nameoffset
          Definition

          An Extension

          ShortExtensionAdditional content defined by implementations
          Control0..1*
          TypeExtension
          Is Modifierfalse
          Summaryfalse
          Invariantsele-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:offset.extension
          Definition

          An Extension


          May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

          ShortExtensionAdditional 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.

          Control0..0*
          TypeExtension
          Is Modifierfalse
          Summaryfalse
          Alternate Namesextensions, user content
          Invariantsele-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())
          SlicingThis 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
          • 38. Extension.extension:offset.url
            Definition

            Source of the definition for the extension code - a logical name or a URL.

            Shortidentifies 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.

            Control1..1
            Typeuri
            Is Modifierfalse
            XML FormatIn the XML format, this property is represented as an attribute.
            Summaryfalse
            Fixed Valueoffset
            40. Extension.extension:offset.value[x]
            Definition

            An offset or offset range before (negative values) or after (positive values) the event. Range is limited to time-valued quantities (Durations).


            Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

            ShortAn offset or offset range before (negative values) or after (positive values) the eventValue of extension
            Control0..1
            This element is affected by the following invariants: ext-1
            TypeChoice of: Duration, Range, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, canonical, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, code, string, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
            [x] NoteSee Choice of Data Types for further information about how to use [x]
            Is Modifierfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            42. Extension.extension:text
            Slice Nametext
            Definition

            An Extension

            ShortExtensionAdditional content defined by implementations
            Control0..1*
            TypeExtension
            Is Modifierfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
            44. Extension.extension:text.extension
            Definition

            An Extension


            May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

            ShortExtensionAdditional 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.

            Control0..0*
            TypeExtension
            Is Modifierfalse
            Summaryfalse
            Alternate Namesextensions, user content
            Invariantsele-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())
            SlicingThis 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
            • 46. Extension.extension:text.url
              Definition

              Source of the definition for the extension code - a logical name or a URL.

              Shortidentifies 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.

              Control1..1
              Typeuri
              Is Modifierfalse
              XML FormatIn the XML format, this property is represented as an attribute.
              Summaryfalse
              Fixed Valuetext
              48. Extension.extension:text.value[x]
              Definition

              Free-text (human-readable) description.


              Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

              ShortaFree-text descriptionValue of extension
              Control0..1
              This element is affected by the following invariants: ext-1
              Typestring, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, positiveInt, Distance, Availability, integer64, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, ExtendedContactDetail, CodeableConcept, ParameterDefinition, dateTime, code, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
              [x] NoteSee Choice of Data Types for further information about how to use [x]
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              50. Extension.url
              Definition

              Source of the definition for the extension code - a logical name or a URL.

              Shortidentifies 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.

              Control1..1
              Typeuri
              Is Modifierfalse
              XML FormatIn the XML format, this property is represented as an attribute.
              Summaryfalse
              Fixed Valuehttp://hl7.org/fhir/uv/ebm/StructureDefinition/characteristic-timing
              52. Extension.value[x]
              Definition

              Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

              ShortValue of extension
              Control0..01
              This element is affected by the following invariants: ext-1
              TypeChoice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, integer64, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Availability, ExtendedContactDetail, Dosage, Meta
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Summaryfalse
              Invariantsele-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 found here

              0. Extension
              Definition

              Timing in which the characteristic is determined.

              ShortTiming in which the characteristic is determined
              Control0..*
              Is Modifierfalse
              Invariantsele-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.

              ShortUnique id for inter-element referencing
              Control0..1
              This element is affected by the following invariants: ele-1
              Typeid
              Is Modifierfalse
              XML FormatIn the XML format, this property is represented as an attribute.
              Summaryfalse
              4. Extension.extension
              Definition

              May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

              ShortAdditional 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.

              Control0..*
              TypeExtension
              Is Modifierfalse
              Summaryfalse
              Alternate Namesextensions, user content
              Invariantsele-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())
              SlicingThis 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:contextReference
                Slice NamecontextReference
                Definition

                An Extension

                ShortExtension
                Control0..1
                TypeExtension
                Is Modifierfalse
                Summaryfalse
                Invariantsele-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:contextReference.id
                Definition

                Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                ShortUnique id for inter-element referencing
                Control0..1
                This element is affected by the following invariants: ele-1
                Typeid
                Is Modifierfalse
                XML FormatIn the XML format, this property is represented as an attribute.
                Summaryfalse
                10. Extension.extension:contextReference.extension
                Definition

                An Extension

                ShortExtension
                Control0..0
                TypeExtension
                Is Modifierfalse
                Summaryfalse
                Invariantsele-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())
                SlicingThis 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:contextReference.url
                  Definition

                  Source of the definition for the extension code - a logical name or a URL.

                  Shortidentifies 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.

                  Control1..1
                  Typeuri
                  Is Modifierfalse
                  XML FormatIn the XML format, this property is represented as an attribute.
                  Summaryfalse
                  Fixed ValuecontextReference
                  14. Extension.extension:contextReference.value[x]
                  Definition

                  The specific event occurrence or resource context used as a base point (reference point) in time. This establishes the context in which the path is evaluated.

                  ShortThe specific event occurrence or resource context used as a base point (reference point) in time
                  Control0..1
                  This element is affected by the following invariants: ext-1
                  TypeReference
                  [x] NoteSee Choice of Data Types for further information about how to use [x]
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                  16. Extension.extension:contextDefinition
                  Slice NamecontextDefinition
                  Definition

                  An Extension

                  ShortExtension
                  Control0..1
                  TypeExtension
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-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:contextDefinition.id
                  Definition

                  Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                  ShortUnique id for inter-element referencing
                  Control0..1
                  This element is affected by the following invariants: ele-1
                  Typeid
                  Is Modifierfalse
                  XML FormatIn the XML format, this property is represented as an attribute.
                  Summaryfalse
                  20. Extension.extension:contextDefinition.extension
                  Definition

                  An Extension

                  ShortExtension
                  Control0..0
                  TypeExtension
                  Is Modifierfalse
                  Summaryfalse
                  Invariantsele-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())
                  SlicingThis 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:contextDefinition.url
                    Definition

                    Source of the definition for the extension code - a logical name or a URL.

                    Shortidentifies 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.

                    Control1..1
                    Typeuri
                    Is Modifierfalse
                    XML FormatIn the XML format, this property is represented as an attribute.
                    Summaryfalse
                    Fixed ValuecontextDefinition
                    24. Extension.extension:contextDefinition.value[x]
                    Definition

                    The type of event used as a base point. Instances of this definition will establish the context for evaluating the path to determine the base time for the offset.

                    ShortThe type of event used as a base point
                    Control0..1
                    This element is affected by the following invariants: ext-1
                    Typecanonical
                    [x] NoteSee Choice of Data Types for further information about how to use [x]
                    Is Modifierfalse
                    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                    Summaryfalse
                    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                    26. Extension.extension:contextPath
                    Slice NamecontextPath
                    Definition

                    An Extension

                    ShortExtension
                    Control0..1
                    TypeExtension
                    Is Modifierfalse
                    Summaryfalse
                    Invariantsele-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:contextPath.id
                    Definition

                    Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                    ShortUnique id for inter-element referencing
                    Control0..1
                    This element is affected by the following invariants: ele-1
                    Typeid
                    Is Modifierfalse
                    XML FormatIn the XML format, this property is represented as an attribute.
                    Summaryfalse
                    30. Extension.extension:contextPath.extension
                    Definition

                    An Extension

                    ShortExtension
                    Control0..0
                    TypeExtension
                    Is Modifierfalse
                    Summaryfalse
                    Invariantsele-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())
                    SlicingThis 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:contextPath.url
                      Definition

                      Source of the definition for the extension code - a logical name or a URL.

                      Shortidentifies 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.

                      Control1..1
                      Typeuri
                      Is Modifierfalse
                      XML FormatIn the XML format, this property is represented as an attribute.
                      Summaryfalse
                      Fixed ValuecontextPath
                      34. Extension.extension:contextPath.value[x]
                      Definition

                      Path to the element defining the point in time. Any valid FHIRPath expression.

                      ShortPath to the element defining the point in time
                      Control0..1
                      This element is affected by the following invariants: ext-1
                      Typestring
                      [x] NoteSee Choice of Data Types for further information about how to use [x]
                      Is Modifierfalse
                      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                      Summaryfalse
                      Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                      36. Extension.extension:contextCode
                      Slice NamecontextCode
                      Definition

                      An Extension

                      ShortExtension
                      Control0..1
                      TypeExtension
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-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:contextCode.id
                      Definition

                      Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                      ShortUnique id for inter-element referencing
                      Control0..1
                      This element is affected by the following invariants: ele-1
                      Typeid
                      Is Modifierfalse
                      XML FormatIn the XML format, this property is represented as an attribute.
                      Summaryfalse
                      40. Extension.extension:contextCode.extension
                      Definition

                      An Extension

                      ShortExtension
                      Control0..0
                      TypeExtension
                      Is Modifierfalse
                      Summaryfalse
                      Invariantsele-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())
                      SlicingThis 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:contextCode.url
                        Definition

                        Source of the definition for the extension code - a logical name or a URL.

                        Shortidentifies 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.

                        Control1..1
                        Typeuri
                        Is Modifierfalse
                        XML FormatIn the XML format, this property is represented as an attribute.
                        Summaryfalse
                        Fixed ValuecontextCode
                        44. Extension.extension:contextCode.value[x]
                        Definition

                        Coded representation of the event used as a base point (reference point) in time.

                        ShortCoded representation of the event used as a base point (reference point) in time
                        Control0..1
                        This element is affected by the following invariants: ext-1
                        TypeCodeableConcept
                        [x] NoteSee Choice of Data Types for further information about how to use [x]
                        Is Modifierfalse
                        Summaryfalse
                        Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                        46. Extension.extension:offset
                        Slice Nameoffset
                        Definition

                        An Extension

                        ShortExtension
                        Control0..1
                        TypeExtension
                        Is Modifierfalse
                        Summaryfalse
                        Invariantsele-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: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.

                        ShortUnique id for inter-element referencing
                        Control0..1
                        This element is affected by the following invariants: ele-1
                        Typeid
                        Is Modifierfalse
                        XML FormatIn the XML format, this property is represented as an attribute.
                        Summaryfalse
                        50. Extension.extension:offset.extension
                        Definition

                        An Extension

                        ShortExtension
                        Control0..0
                        TypeExtension
                        Is Modifierfalse
                        Summaryfalse
                        Invariantsele-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())
                        SlicingThis 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:offset.url
                          Definition

                          Source of the definition for the extension code - a logical name or a URL.

                          Shortidentifies 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.

                          Control1..1
                          Typeuri
                          Is Modifierfalse
                          XML FormatIn the XML format, this property is represented as an attribute.
                          Summaryfalse
                          Fixed Valueoffset
                          54. Extension.extension:offset.value[x]
                          Definition

                          An offset or offset range before (negative values) or after (positive values) the event. Range is limited to time-valued quantities (Durations).

                          ShortAn offset or offset range before (negative values) or after (positive values) the event
                          Control0..1
                          This element is affected by the following invariants: ext-1
                          TypeChoice of: Duration, Range
                          [x] NoteSee Choice of Data Types for further information about how to use [x]
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                          56. Extension.extension:text
                          Slice Nametext
                          Definition

                          An Extension

                          ShortExtension
                          Control0..1
                          TypeExtension
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-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:text.id
                          Definition

                          Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                          ShortUnique id for inter-element referencing
                          Control0..1
                          This element is affected by the following invariants: ele-1
                          Typeid
                          Is Modifierfalse
                          XML FormatIn the XML format, this property is represented as an attribute.
                          Summaryfalse
                          60. Extension.extension:text.extension
                          Definition

                          An Extension

                          ShortExtension
                          Control0..0
                          TypeExtension
                          Is Modifierfalse
                          Summaryfalse
                          Invariantsele-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())
                          SlicingThis 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:text.url
                            Definition

                            Source of the definition for the extension code - a logical name or a URL.

                            Shortidentifies 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.

                            Control1..1
                            Typeuri
                            Is Modifierfalse
                            XML FormatIn the XML format, this property is represented as an attribute.
                            Summaryfalse
                            Fixed Valuetext
                            64. Extension.extension:text.value[x]
                            Definition

                            Free-text (human-readable) description.

                            ShortaFree-text description
                            Control0..1
                            This element is affected by the following invariants: ext-1
                            Typestring
                            [x] NoteSee Choice of Data Types for further information about how to use [x]
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summaryfalse
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                            66. Extension.url
                            Definition

                            Source of the definition for the extension code - a logical name or a URL.

                            Shortidentifies 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.

                            Control1..1
                            Typeuri
                            Is Modifierfalse
                            XML FormatIn the XML format, this property is represented as an attribute.
                            Summaryfalse
                            Fixed Valuehttp://hl7.org/fhir/uv/ebm/StructureDefinition/characteristic-timing
                            68. Extension.value[x]
                            Definition

                            Value of extension - must be one of a constrained set of the data types (see Extensibility for a list).

                            ShortValue of extension
                            Control0..0
                            This element is affected by the following invariants: ext-1
                            TypeChoice of: base64Binary, boolean, canonical, code, date, dateTime, decimal, id, instant, integer, integer64, markdown, oid, positiveInt, string, time, unsignedInt, uri, url, uuid, Address, Age, Annotation, Attachment, CodeableConcept, CodeableReference, Coding, ContactPoint, Count, Distance, Duration, HumanName, Identifier, Money, Period, Quantity, Range, Ratio, RatioRange, Reference, SampledData, Signature, Timing, ContactDetail, DataRequirement, Expression, ParameterDefinition, RelatedArtifact, TriggerDefinition, UsageContext, Availability, ExtendedContactDetail, Dosage, Meta
                            Is Modifierfalse
                            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                            Summaryfalse
                            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))