Extensions for Using Data Elements from FHIR STU3 in FHIR R4
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Extensions for Using Data Elements from FHIR STU3 in FHIR R4 - Downloaded Version null See the Directory of published versions

Extension: ExtensionExpansionProfile_ExcludedSystem - Detailed Descriptions

Page standards status: Trial-use Maturity Level: 0

Definitions for the ext-R3-ExpansionProfile.excludedSystem extension.

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

0. Extension
Definition

STU3: ExpansionProfile.excludedSystem (new:BackboneElement)


Optional Extension Element - found in all resources.

ShortSTU3: Systems/Versions to be exclude (new)Optional Extensions Element
Comments

Element ExpansionProfile.excludedSystem has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). When a system is excluded, and this makes a material difference to the expansion, the exclusion SHALL be noted in the expansion parameters using a parameter 'excluded'.

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.

Control10..*
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:system
    Slice Namesystem
    Definition

    STU3: ExpansionProfile.excludedSystem.system (new:uri)

    ShortSTU3: The specific code system to be excluded (new)Additional content defined by implementations
    Comments

    Element ExpansionProfile.excludedSystem.system is part of an existing definition because parent element ExpansionProfile.excludedSystem requires a cross-version extension. Element ExpansionProfile.excludedSystem.system has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem.system has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). See ''Coding.system'' for further documentation.

    Control10..1*
    TypeExtension
    Is Modifierfalse
    Summaryfalse
    Requirements

    Element ExpansionProfile.excludedSystem.system is part of an existing definition because parent element ExpansionProfile.excludedSystem requires a cross-version extension. Element ExpansionProfile.excludedSystem.system has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem.system 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:system.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 Valuesystem
    8. Extension.extension:system.value[x]
    Definition

    An absolute URI which is the code system to be excluded.


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

    ShortThe specific code system to be excludedValue of extension
    Comments

    See ''Coding.system'' for further documentation.

    Control10..1
    Typeuri, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, string, Contributor, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, 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:version
    Slice Nameversion
    Definition

    STU3: ExpansionProfile.excludedSystem.version (new:string)

    ShortSTU3: Specific version of the code system referred to (new)Additional content defined by implementations
    Comments

    Element ExpansionProfile.excludedSystem.version is part of an existing definition because parent element ExpansionProfile.excludedSystem requires a cross-version extension. Element ExpansionProfile.excludedSystem.version has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem.version has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). This is used to apply version specifc exclusion contraints. If no version is specified, then all codes from the code system present in the expansion (prior to application of the expansion profile) will be excluded.

    Control0..1*
    TypeExtension
    Is Modifierfalse
    Summaryfalse
    Requirements

    Element ExpansionProfile.excludedSystem.version is part of an existing definition because parent element ExpansionProfile.excludedSystem requires a cross-version extension. Element ExpansionProfile.excludedSystem.version has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem.version 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:version.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 Valueversion
    14. Extension.extension:version.value[x]
    Definition

    The version of the code system from which codes in the expansion should be excluded.


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

    ShortSpecific version of the code system referred toValue of extension
    Comments

    This is used to apply version specifc exclusion contraints. If no version is specified, then all codes from the code system present in the expansion (prior to application of the expansion profile) will be excluded.

    Control0..1
    Typestring, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, Coding, SampledData, id, positiveInt, Distance, Period, Duration, canonical, Range, RelatedArtifact, base64Binary, UsageContext, Timing, decimal, CodeableConcept, ParameterDefinition, dateTime, code, 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.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/3.0/StructureDefinition/extension-ExpansionProfile.excludedSystem
    18. 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

    STU3: ExpansionProfile.excludedSystem (new:BackboneElement)

    ShortSTU3: Systems/Versions to be exclude (new)
    Comments

    Element ExpansionProfile.excludedSystem has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). When a system is excluded, and this makes a material difference to the expansion, the exclusion SHALL be noted in the expansion parameters using a parameter 'excluded'.

    Control0..1
    Is Modifierfalse
    2. Extension.extension
    Control1..*
    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:system
      Slice Namesystem
      Definition

      STU3: ExpansionProfile.excludedSystem.system (new:uri)

      ShortSTU3: The specific code system to be excluded (new)
      Comments

      Element ExpansionProfile.excludedSystem.system is part of an existing definition because parent element ExpansionProfile.excludedSystem requires a cross-version extension. Element ExpansionProfile.excludedSystem.system has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem.system has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). See ''Coding.system'' for further documentation.

      Control1..1
      Requirements

      Element ExpansionProfile.excludedSystem.system is part of an existing definition because parent element ExpansionProfile.excludedSystem requires a cross-version extension. Element ExpansionProfile.excludedSystem.system has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem.system has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).

      6. Extension.extension:system.url
      Control1..1
      Fixed Valuesystem
      8. Extension.extension:system.value[x]
      Definition

      An absolute URI which is the code system to be excluded.

      ShortThe specific code system to be excluded
      Comments

      See ''Coding.system'' for further documentation.

      Control1..1
      Typeuri
      [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:version
      Slice Nameversion
      Definition

      STU3: ExpansionProfile.excludedSystem.version (new:string)

      ShortSTU3: Specific version of the code system referred to (new)
      Comments

      Element ExpansionProfile.excludedSystem.version is part of an existing definition because parent element ExpansionProfile.excludedSystem requires a cross-version extension. Element ExpansionProfile.excludedSystem.version has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem.version has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). This is used to apply version specifc exclusion contraints. If no version is specified, then all codes from the code system present in the expansion (prior to application of the expansion profile) will be excluded.

      Control0..1
      Requirements

      Element ExpansionProfile.excludedSystem.version is part of an existing definition because parent element ExpansionProfile.excludedSystem requires a cross-version extension. Element ExpansionProfile.excludedSystem.version has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem.version has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element).

      12. Extension.extension:version.url
      Control1..1
      Fixed Valueversion
      14. Extension.extension:version.value[x]
      Definition

      The version of the code system from which codes in the expansion should be excluded.

      ShortSpecific version of the code system referred to
      Comments

      This is used to apply version specifc exclusion contraints. If no version is specified, then all codes from the code system present in the expansion (prior to application of the expansion profile) will be excluded.

      Control0..1
      Typestring
      [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.url
      Control1..1
      Fixed Valuehttp://hl7.org/fhir/3.0/StructureDefinition/extension-ExpansionProfile.excludedSystem
      18. Extension.value[x]
      Control0..0

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

      0. Extension
      Definition

      STU3: ExpansionProfile.excludedSystem (new:BackboneElement)

      ShortSTU3: Systems/Versions to be exclude (new)
      Comments

      Element ExpansionProfile.excludedSystem has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). When a system is excluded, and this makes a material difference to the expansion, the exclusion SHALL be noted in the expansion parameters using a parameter 'excluded'.

      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
      Control1..*
      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:system
        Slice Namesystem
        Definition

        STU3: ExpansionProfile.excludedSystem.system (new:uri)

        ShortSTU3: The specific code system to be excluded (new)
        Comments

        Element ExpansionProfile.excludedSystem.system is part of an existing definition because parent element ExpansionProfile.excludedSystem requires a cross-version extension. Element ExpansionProfile.excludedSystem.system has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem.system has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). See ''Coding.system'' for further documentation.

        Control1..1
        TypeExtension
        Is Modifierfalse
        Summaryfalse
        Requirements

        Element ExpansionProfile.excludedSystem.system is part of an existing definition because parent element ExpansionProfile.excludedSystem requires a cross-version extension. Element ExpansionProfile.excludedSystem.system has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem.system 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:system.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:system.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:system.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 Valuesystem
          14. Extension.extension:system.value[x]
          Definition

          An absolute URI which is the code system to be excluded.

          ShortThe specific code system to be excluded
          Comments

          See ''Coding.system'' for further documentation.

          Control1..1
          Typeuri
          [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:version
          Slice Nameversion
          Definition

          STU3: ExpansionProfile.excludedSystem.version (new:string)

          ShortSTU3: Specific version of the code system referred to (new)
          Comments

          Element ExpansionProfile.excludedSystem.version is part of an existing definition because parent element ExpansionProfile.excludedSystem requires a cross-version extension. Element ExpansionProfile.excludedSystem.version has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem.version has no mapping targets in FHIR R4. Typically, this is because the element has been added (is a new element). This is used to apply version specifc exclusion contraints. If no version is specified, then all codes from the code system present in the expansion (prior to application of the expansion profile) will be excluded.

          Control0..1
          TypeExtension
          Is Modifierfalse
          Summaryfalse
          Requirements

          Element ExpansionProfile.excludedSystem.version is part of an existing definition because parent element ExpansionProfile.excludedSystem requires a cross-version extension. Element ExpansionProfile.excludedSystem.version has a context of Parameters based on following the parent source element upwards and mapping to Parameters. Element ExpansionProfile.excludedSystem.version 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:version.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:version.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:version.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 Valueversion
            24. Extension.extension:version.value[x]
            Definition

            The version of the code system from which codes in the expansion should be excluded.

            ShortSpecific version of the code system referred to
            Comments

            This is used to apply version specifc exclusion contraints. If no version is specified, then all codes from the code system present in the expansion (prior to application of the expansion profile) will be excluded.

            Control0..1
            Typestring
            [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.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/3.0/StructureDefinition/extension-ExpansionProfile.excludedSystem
            28. 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()))