Extensions for Using Data Elements from FHIR R5 in FHIR R4
0.1.0 - STU International flag

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

Extension: ExtensionEvidenceVariable_Characteristic_DefinitionByCombination - Detailed Descriptions

Page standards status: Trial-use Maturity Level: 0

Definitions for the ext-R5-EvidenceVariable.cha.dBC extension.

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

0. Extension
Definition

R5: EvidenceVariable.characteristic.definitionByCombination (new:BackboneElement)


Optional Extension Element - found in all resources.

ShortR5: Used to specify how two or more characteristics are combined (new)Optional Extensions Element
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).

Control0..1*
This element is affected by the following invariants: ele-1
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())
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.

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.

Control20..*
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())
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())
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
  • 4. Extension.extension:code
    Slice Namecode
    Definition

    R5: EvidenceVariable.characteristic.definitionByCombination.code (new:code)

    ShortR5: 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).

    Control10..1*
    TypeExtension
    Is Modifierfalse
    Summaryfalse
    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).

    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())
    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:code.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 Valuecode
    8. Extension.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).

    Shortall-of | any-of | at-least | at-most | statistical | net-effect | datasetValue of extension
    Control10..1
    BindingThe 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)
    Typecode, 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] NoteSeeChoice of Data Typesfor 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()))
    ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    10. Extension.extension:threshold
    Slice Namethreshold
    Definition

    R5: EvidenceVariable.characteristic.definitionByCombination.threshold (new:positiveInt)

    ShortR5: 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).

    Control0..1*
    TypeExtension
    Is Modifierfalse
    Summaryfalse
    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).

    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())
    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:threshold.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 Valuethreshold
    14. Extension.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).

    ShortProvides the value of "n" when "at-least" or "at-most" codes are usedValue of extension
    Control0..1
    TypepositiveInt, 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] NoteSeeChoice of Data Typesfor 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()))
    ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    16. Extension.extension:characteristic
    Slice Namecharacteristic
    Definition

    R5: EvidenceVariable.characteristic.definitionByCombination.characteristic (new:EvidenceVariable.characteristic)

    ShortR5: 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).

    Control10..*
    TypeExtension
    Is Modifierfalse
    Summaryfalse
    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).

    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())
    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:characteristic.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/5.0/StructureDefinition/extension-EvidenceVariable.characteristic
    20. Extension.extension:characteristic.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
    TypeChoice 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 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()))
    ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    22. 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/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.definitionByCombination
    24. 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
    TypeChoice 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 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()))
    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.definitionByCombination (new:BackboneElement)

    ShortR5: 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).

    Control0..1
    Is Modifierfalse
    2. Extension.extension
    Control2..*
    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
    • 4. Extension.extension:code
      Slice Namecode
      Definition

      R5: EvidenceVariable.characteristic.definitionByCombination.code (new:code)

      ShortR5: 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).

      Control1..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).

      6. Extension.extension:code.url
      Control1..1
      Fixed Valuecode
      8. Extension.extension:code.value[x]
      Definition

      Used to specify if two or more characteristics are combined with OR or AND.

      Shortall-of | any-of | at-least | at-most | statistical | net-effect | dataset
      Control1..1
      BindingThe 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)
      Typecode
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      10. Extension.extension:threshold
      Slice Namethreshold
      Definition

      R5: EvidenceVariable.characteristic.definitionByCombination.threshold (new:positiveInt)

      ShortR5: 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).

      Control0..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).

      12. Extension.extension:threshold.url
      Control1..1
      Fixed Valuethreshold
      14. Extension.extension:threshold.value[x]
      Definition

      Provides the value of "n" when "at-least" or "at-most" codes are used.

      ShortProvides the value of "n" when "at-least" or "at-most" codes are used
      Control0..1
      TypepositiveInt
      [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
      Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
      16. Extension.extension:characteristic
      Slice Namecharacteristic
      Definition

      R5: EvidenceVariable.characteristic.definitionByCombination.characteristic (new:EvidenceVariable.characteristic)

      ShortR5: 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).

      Control1..*
      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).

      18. Extension.extension:characteristic.url
      Control1..1
      Fixed Valuehttp://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic
      20. Extension.extension:characteristic.value[x]
      Control0..0
      22. Extension.url
      Control1..1
      Fixed Valuehttp://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.definitionByCombination
      24. Extension.value[x]
      Control0..0

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

      0. Extension
      Definition

      R5: EvidenceVariable.characteristic.definitionByCombination (new:BackboneElement)

      ShortR5: 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).

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

      An Extension

      ShortExtension
      Control2..*
      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. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ url
      • 6. Extension.extension:code
        Slice Namecode
        Definition

        R5: EvidenceVariable.characteristic.definitionByCombination.code (new:code)

        ShortR5: 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).

        Control1..1
        TypeExtension
        Is Modifierfalse
        Summaryfalse
        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).

        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: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.

        ShortUnique id for inter-element referencing
        Control0..1
        Typestring
        Is Modifierfalse
        XML FormatIn the XML format, this property is represented as an attribute.
        Summaryfalse
        10. Extension.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.

        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.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • value @ url
        • 12. Extension.extension:code.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 Valuecode
          14. Extension.extension:code.value[x]
          Definition

          Used to specify if two or more characteristics are combined with OR or AND.

          Shortall-of | any-of | at-least | at-most | statistical | net-effect | dataset
          Control1..1
          BindingThe 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)
          Typecode
          [x] NoteSeeChoice of Data Typesfor 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()))
          16. Extension.extension:threshold
          Slice Namethreshold
          Definition

          R5: EvidenceVariable.characteristic.definitionByCombination.threshold (new:positiveInt)

          ShortR5: 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).

          Control0..1
          TypeExtension
          Is Modifierfalse
          Summaryfalse
          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).

          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: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.

          ShortUnique id for inter-element referencing
          Control0..1
          Typestring
          Is Modifierfalse
          XML FormatIn the XML format, this property is represented as an attribute.
          Summaryfalse
          20. Extension.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.

          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.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • value @ url
          • 22. Extension.extension:threshold.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 Valuethreshold
            24. Extension.extension:threshold.value[x]
            Definition

            Provides the value of "n" when "at-least" or "at-most" codes are used.

            ShortProvides the value of "n" when "at-least" or "at-most" codes are used
            Control0..1
            TypepositiveInt
            [x] NoteSeeChoice of Data Typesfor 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:characteristic
            Slice Namecharacteristic
            Definition

            R5: EvidenceVariable.characteristic.definitionByCombination.characteristic (new:EvidenceVariable.characteristic)

            ShortR5: 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).

            Control1..*
            TypeExtension
            Is Modifierfalse
            Summaryfalse
            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).

            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: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.

            ShortUnique id for inter-element referencing
            Control0..1
            Typestring
            Is Modifierfalse
            XML FormatIn the XML format, this property is represented as an attribute.
            Summaryfalse
            30. Extension.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.

            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.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • value @ url
            • 32. Extension.extension:characteristic.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/5.0/StructureDefinition/extension-EvidenceVariable.characteristic
              34. Extension.extension:characteristic.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
              TypeChoice 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 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.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/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.definitionByCombination
              38. 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
              TypeChoice 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 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()))