Evidence Based Medicine on FHIR Implementation Guide
2.0.0-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 2.0.0-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: EvidenceVariableConstraint - Detailed Descriptions

Page standards status: Draft Maturity Level: 1

Definitions for the evidence-variable-constraint extension.

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

0. Extension
Definition

Limit on acceptability of data used to express values of the variable.

ShortLimit on acceptability of data value
2. Extension.extension:conditional
Slice Nameconditional
Control0..1
4. Extension.extension:conditional.extension
Control0..0
6. Extension.extension:conditional.url
Fixed Valueconditional
8. Extension.extension:conditional.value[x]
Definition

When this constraint applies.

ShortWhen this constraint applies
TypeCodeableConcept
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
10. Extension.extension:minimumQuantity
Slice NameminimumQuantity
Control0..1
12. Extension.extension:minimumQuantity.extension
Control0..0
14. Extension.extension:minimumQuantity.url
Fixed ValueminimumQuantity
16. Extension.extension:minimumQuantity.value[x]
Definition

The lowest permissible value of the variable, used with variables that have a number-based datatype (with or without units).

ShortThe lowest permissible value of the variable
TypeQuantity
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
18. Extension.extension:maximumQuantity
Slice NamemaximumQuantity
Control0..1
20. Extension.extension:maximumQuantity.extension
Control0..0
22. Extension.extension:maximumQuantity.url
Fixed ValuemaximumQuantity
24. Extension.extension:maximumQuantity.value[x]
Definition

The highest permissible value of the variable, used with variables that have a number-based datatype (with or without units).

ShortThe highest permissible value of the variable
TypeQuantity
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
26. Extension.extension:earliestDateTime
Slice NameearliestDateTime
Control0..1
28. Extension.extension:earliestDateTime.extension
Control0..0
30. Extension.extension:earliestDateTime.url
Fixed ValueearliestDateTime
32. Extension.extension:earliestDateTime.value[x]
Definition

The earliest permissible value of the variable, used with variables that have a date/time-based datatype.

ShortThe earliest permissible value of the variable
TypedateTime
[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
34. Extension.extension:latestDateTime
Slice NamelatestDateTime
Control0..1
36. Extension.extension:latestDateTime.extension
Control0..0
38. Extension.extension:latestDateTime.url
Fixed ValuelatestDateTime
40. Extension.extension:latestDateTime.value[x]
Definition

The latest permissible value of the variable, used with variables that have a date/time-based datatype.

ShortThe latest permissible value of the variable
TypedateTime
[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
42. Extension.extension:minimumStringLength
Slice NameminimumStringLength
Control0..1
44. Extension.extension:minimumStringLength.extension
Control0..0
46. Extension.extension:minimumStringLength.url
Fixed ValueminimumStringLength
48. Extension.extension:minimumStringLength.value[x]
Definition

The lowest number of characters allowed for a value of the variable, used with variables that have a string-based datatype.

ShortThe lowest number of characters allowed for a value of the variable
Typeinteger
[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
50. Extension.extension:maximumStringLength
Slice NamemaximumStringLength
Control0..1
52. Extension.extension:maximumStringLength.extension
Control0..0
54. Extension.extension:maximumStringLength.url
Fixed ValuemaximumStringLength
56. Extension.extension:maximumStringLength.value[x]
Definition

The highest number of characters allowed for a value of the variable, used with variables that have a string-based datatype.

ShortThe highest number of characters allowed for a value of the variable
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
58. Extension.extension:code
Slice Namecode
Control0..1
60. Extension.extension:code.extension
Control0..0
62. Extension.extension:code.url
Fixed Valuecode
64. Extension.extension:code.value[x]
Definition

A rule, such as a format or other expectation, for the data values.

ShortRule for acceptable data values
TypeCodeableConcept
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
66. Extension.extension:expression
Slice Nameexpression
Control0..1
68. Extension.extension:expression.extension
Control0..0
70. Extension.extension:expression.url
Fixed Valueexpression
72. Extension.extension:expression.value[x]
Definition

A rule, such as a format or other expectation, for the data values, expressed as an Expression.

ShortRule for acceptable data values, as an Expression
TypeExpression
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
74. Extension.extension:expectedValueSet
Slice NameexpectedValueSet
Control0..1
76. Extension.extension:expectedValueSet.extension
Control0..0
78. Extension.extension:expectedValueSet.url
Fixed ValueexpectedValueSet
80. Extension.extension:expectedValueSet.value[x]
Definition

List of anticipated values used to express value of the variable, used with variables that have a codeable concept-based datatype.

ShortList of anticipated values used to express value of the variable
TypeReference(ValueSet)
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
82. Extension.extension:expectedUnitsValueSet
Slice NameexpectedUnitsValueSet
Control0..1
84. Extension.extension:expectedUnitsValueSet.extension
Control0..0
86. Extension.extension:expectedUnitsValueSet.url
Fixed ValueexpectedUnitsValueSet
88. Extension.extension:expectedUnitsValueSet.value[x]
Definition

List of anticipated values used to express units for the value of the variable, used with variables that have a Quantity-based datatype.

ShortList of anticipated values used to express units for the value of the variable
TypeReference(ValueSet)
[x] NoteSeeChoice of Data Typesfor further information about how to use [x]
90. Extension.extension:anyValueAllowed
Slice NameanyValueAllowed
Control0..1
92. Extension.extension:anyValueAllowed.extension
Control0..0
94. Extension.extension:anyValueAllowed.url
Fixed ValueanyValueAllowed
96. Extension.extension:anyValueAllowed.value[x]
Definition

Whether the value expressed for a variable is allowed to not be restricted to the expected value set.

ShortPermissibility of unanticipated value used to express value of the variable
Typeboolean
[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
98. Extension.url
Fixed Valuehttp://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-variable-constraint
100. Extension.value[x]
Control0..0

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

0. Extension
Definition

Limit on acceptability of data used to express values of the variable.


Optional Extension Element - found in all resources.

ShortLimit on acceptability of data valueOptional 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:conditional
Slice Nameconditional
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()))
4. Extension.extension:conditional.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()))
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:conditional.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 Valueconditional
    8. Extension.extension:conditional.value[x]
    Definition

    When this constraint applies.


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

    ShortWhen this constraint appliesValue 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] NoteSeeChoice of Data Typesfor 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:minimumQuantity
    Slice NameminimumQuantity
    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()))
    12. Extension.extension:minimumQuantity.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()))
    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:minimumQuantity.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 ValueminimumQuantity
      16. Extension.extension:minimumQuantity.value[x]
      Definition

      The lowest permissible value of the variable, used with variables that have a number-based datatype (with or without units).


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

      ShortThe lowest permissible value of the variableValue of extension
      Control0..1
      This element is affected by the following invariants: ext-1
      TypeQuantity, 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, Reference, TriggerDefinition, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
      [x] NoteSeeChoice of Data Typesfor 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()))
      18. Extension.extension:maximumQuantity
      Slice NamemaximumQuantity
      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()))
      20. Extension.extension:maximumQuantity.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()))
      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:maximumQuantity.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 ValuemaximumQuantity
        24. Extension.extension:maximumQuantity.value[x]
        Definition

        The highest permissible value of the variable, used with variables that have a number-based datatype (with or without units).


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

        ShortThe highest permissible value of the variableValue of extension
        Control0..1
        This element is affected by the following invariants: ext-1
        TypeQuantity, 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, Reference, TriggerDefinition, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, Signature, unsignedInt, time
        [x] NoteSeeChoice of Data Typesfor 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()))
        26. Extension.extension:earliestDateTime
        Slice NameearliestDateTime
        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()))
        28. Extension.extension:earliestDateTime.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()))
        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:earliestDateTime.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 ValueearliestDateTime
          32. Extension.extension:earliestDateTime.value[x]
          Definition

          The earliest permissible value of the variable, used with variables that have a date/time-based datatype.


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

          ShortThe earliest permissible value of the variableValue of extension
          Control0..1
          This element is affected by the following invariants: ext-1
          TypedateTime, 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, code, string, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, 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()))
          34. Extension.extension:latestDateTime
          Slice NamelatestDateTime
          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()))
          36. Extension.extension:latestDateTime.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()))
          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:latestDateTime.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 ValuelatestDateTime
            40. Extension.extension:latestDateTime.value[x]
            Definition

            The latest permissible value of the variable, used with variables that have a date/time-based datatype.


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

            ShortThe latest permissible value of the variableValue of extension
            Control0..1
            This element is affected by the following invariants: ext-1
            TypedateTime, 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, code, string, oid, instant, ContactPoint, HumanName, Money, markdown, Ratio, Age, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, 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()))
            42. Extension.extension:minimumStringLength
            Slice NameminimumStringLength
            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()))
            44. Extension.extension:minimumStringLength.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()))
            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:minimumStringLength.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 ValueminimumStringLength
              48. Extension.extension:minimumStringLength.value[x]
              Definition

              The lowest number of characters allowed for a value of the variable, used with variables that have a string-based datatype.


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

              ShortThe lowest number of characters allowed for a value of the variableValue of extension
              Control0..1
              This element is affected by the following invariants: ext-1
              Typeinteger, date, Meta, Address, Attachment, 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, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, 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()))
              50. Extension.extension:maximumStringLength
              Slice NamemaximumStringLength
              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()))
              52. Extension.extension:maximumStringLength.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()))
              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
              • 54. Extension.extension:maximumStringLength.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 ValuemaximumStringLength
                56. Extension.extension:maximumStringLength.value[x]
                Definition

                The highest number of characters allowed for a value of the variable, used with variables that have a string-based datatype.


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

                ShortThe highest number of characters allowed for a value of the variableValue of extension
                Control0..1
                This element is affected by the following invariants: ext-1
                TypepositiveInt, date, Meta, Address, Attachment, integer, Count, DataRequirement, Dosage, uuid, Identifier, RatioRange, Coding, SampledData, id, 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, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, Expression, CodeableReference, 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()))
                58. Extension.extension:code
                Slice Namecode
                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()))
                60. Extension.extension:code.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()))
                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: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
                  64. Extension.extension:code.value[x]
                  Definition

                  A rule, such as a format or other expectation, for the data values.


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

                  ShortRule for acceptable data valuesValue 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] NoteSeeChoice of Data Typesfor 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()))
                  66. Extension.extension:expression
                  Slice Nameexpression
                  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()))
                  68. Extension.extension:expression.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()))
                  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
                  • 70. Extension.extension:expression.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 Valueexpression
                    72. Extension.extension:expression.value[x]
                    Definition

                    A rule, such as a format or other expectation, for the data values, expressed as an Expression.


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

                    ShortRule for acceptable data values, as an ExpressionValue of extension
                    Control0..1
                    This element is affected by the following invariants: ext-1
                    TypeExpression, 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, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, boolean, CodeableReference, Signature, unsignedInt, time
                    [x] NoteSeeChoice of Data Typesfor 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()))
                    74. Extension.extension:expectedValueSet
                    Slice NameexpectedValueSet
                    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()))
                    76. Extension.extension:expectedValueSet.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()))
                    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
                    • 78. Extension.extension:expectedValueSet.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 ValueexpectedValueSet
                      80. Extension.extension:expectedValueSet.value[x]
                      Definition

                      List of anticipated values used to express value of the variable, used with variables that have a codeable concept-based datatype.


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

                      ShortList of anticipated values used to express value of the variableValue of extension
                      Control0..1
                      This element is affected by the following invariants: ext-1
                      TypeReference(ValueSet), 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] NoteSeeChoice of Data Typesfor 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()))
                      82. Extension.extension:expectedUnitsValueSet
                      Slice NameexpectedUnitsValueSet
                      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()))
                      84. Extension.extension:expectedUnitsValueSet.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()))
                      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
                      • 86. Extension.extension:expectedUnitsValueSet.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 ValueexpectedUnitsValueSet
                        88. Extension.extension:expectedUnitsValueSet.value[x]
                        Definition

                        List of anticipated values used to express units for the value of the variable, used with variables that have a Quantity-based datatype.


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

                        ShortList of anticipated values used to express units for the value of the variableValue of extension
                        Control0..1
                        This element is affected by the following invariants: ext-1
                        TypeReference(ValueSet), 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] NoteSeeChoice of Data Typesfor 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()))
                        90. Extension.extension:anyValueAllowed
                        Slice NameanyValueAllowed
                        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()))
                        92. Extension.extension:anyValueAllowed.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()))
                        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
                        • 94. Extension.extension:anyValueAllowed.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 ValueanyValueAllowed
                          96. Extension.extension:anyValueAllowed.value[x]
                          Definition

                          Whether the value expressed for a variable is allowed to not be restricted to the expected value set.


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

                          ShortPermissibility of unanticipated value used to express value of the variableValue of extension
                          Control0..1
                          This element is affected by the following invariants: ext-1
                          Typeboolean, 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, Reference, TriggerDefinition, Quantity, uri, url, Annotation, ContactDetail, Expression, CodeableReference, 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()))
                          98. 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/evidence-variable-constraint
                          100. 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

                          Limit on acceptability of data used to express values of the variable.

                          ShortLimit on acceptability of data value
                          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()))
                          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:conditional
                            Slice Nameconditional
                            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()))
                            8. Extension.extension:conditional.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:conditional.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()))
                            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:conditional.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 Valueconditional
                              14. Extension.extension:conditional.value[x]
                              Definition

                              When this constraint applies.

                              ShortWhen this constraint applies
                              Control0..1
                              This element is affected by the following invariants: ext-1
                              TypeCodeableConcept
                              [x] NoteSeeChoice of Data Typesfor 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:minimumQuantity
                              Slice NameminimumQuantity
                              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()))
                              18. Extension.extension:minimumQuantity.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:minimumQuantity.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()))
                              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:minimumQuantity.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 ValueminimumQuantity
                                24. Extension.extension:minimumQuantity.value[x]
                                Definition

                                The lowest permissible value of the variable, used with variables that have a number-based datatype (with or without units).

                                ShortThe lowest permissible value of the variable
                                Control0..1
                                This element is affected by the following invariants: ext-1
                                TypeQuantity
                                [x] NoteSeeChoice of Data Typesfor 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()))
                                26. Extension.extension:maximumQuantity
                                Slice NamemaximumQuantity
                                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()))
                                28. Extension.extension:maximumQuantity.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:maximumQuantity.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()))
                                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:maximumQuantity.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 ValuemaximumQuantity
                                  34. Extension.extension:maximumQuantity.value[x]
                                  Definition

                                  The highest permissible value of the variable, used with variables that have a number-based datatype (with or without units).

                                  ShortThe highest permissible value of the variable
                                  Control0..1
                                  This element is affected by the following invariants: ext-1
                                  TypeQuantity
                                  [x] NoteSeeChoice of Data Typesfor 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()))
                                  36. Extension.extension:earliestDateTime
                                  Slice NameearliestDateTime
                                  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()))
                                  38. Extension.extension:earliestDateTime.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:earliestDateTime.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()))
                                  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:earliestDateTime.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 ValueearliestDateTime
                                    44. Extension.extension:earliestDateTime.value[x]
                                    Definition

                                    The earliest permissible value of the variable, used with variables that have a date/time-based datatype.

                                    ShortThe earliest permissible value of the variable
                                    Control0..1
                                    This element is affected by the following invariants: ext-1
                                    TypedateTime
                                    [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()))
                                    46. Extension.extension:latestDateTime
                                    Slice NamelatestDateTime
                                    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()))
                                    48. Extension.extension:latestDateTime.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:latestDateTime.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()))
                                    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:latestDateTime.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 ValuelatestDateTime
                                      54. Extension.extension:latestDateTime.value[x]
                                      Definition

                                      The latest permissible value of the variable, used with variables that have a date/time-based datatype.

                                      ShortThe latest permissible value of the variable
                                      Control0..1
                                      This element is affected by the following invariants: ext-1
                                      TypedateTime
                                      [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()))
                                      56. Extension.extension:minimumStringLength
                                      Slice NameminimumStringLength
                                      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()))
                                      58. Extension.extension:minimumStringLength.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:minimumStringLength.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()))
                                      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:minimumStringLength.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 ValueminimumStringLength
                                        64. Extension.extension:minimumStringLength.value[x]
                                        Definition

                                        The lowest number of characters allowed for a value of the variable, used with variables that have a string-based datatype.

                                        ShortThe lowest number of characters allowed for a value of the variable
                                        Control0..1
                                        This element is affected by the following invariants: ext-1
                                        Typeinteger
                                        [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()))
                                        66. Extension.extension:maximumStringLength
                                        Slice NamemaximumStringLength
                                        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()))
                                        68. Extension.extension:maximumStringLength.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
                                        70. Extension.extension:maximumStringLength.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()))
                                        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
                                        • 72. Extension.extension:maximumStringLength.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 ValuemaximumStringLength
                                          74. Extension.extension:maximumStringLength.value[x]
                                          Definition

                                          The highest number of characters allowed for a value of the variable, used with variables that have a string-based datatype.

                                          ShortThe highest number of characters allowed for a value of the variable
                                          Control0..1
                                          This element is affected by the following invariants: ext-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()))
                                          76. Extension.extension:code
                                          Slice Namecode
                                          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()))
                                          78. 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
                                          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
                                          80. Extension.extension:code.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()))
                                          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
                                          • 82. 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
                                            84. Extension.extension:code.value[x]
                                            Definition

                                            A rule, such as a format or other expectation, for the data values.

                                            ShortRule for acceptable data values
                                            Control0..1
                                            This element is affected by the following invariants: ext-1
                                            TypeCodeableConcept
                                            [x] NoteSeeChoice of Data Typesfor 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()))
                                            86. Extension.extension:expression
                                            Slice Nameexpression
                                            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()))
                                            88. Extension.extension:expression.id
                                            Definition

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

                                            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
                                            90. Extension.extension:expression.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()))
                                            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
                                            • 92. Extension.extension:expression.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 Valueexpression
                                              94. Extension.extension:expression.value[x]
                                              Definition

                                              A rule, such as a format or other expectation, for the data values, expressed as an Expression.

                                              ShortRule for acceptable data values, as an Expression
                                              Control0..1
                                              This element is affected by the following invariants: ext-1
                                              TypeExpression
                                              [x] NoteSeeChoice of Data Typesfor 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()))
                                              96. Extension.extension:expectedValueSet
                                              Slice NameexpectedValueSet
                                              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()))
                                              98. Extension.extension:expectedValueSet.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
                                              100. Extension.extension:expectedValueSet.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()))
                                              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
                                              • 102. Extension.extension:expectedValueSet.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 ValueexpectedValueSet
                                                104. Extension.extension:expectedValueSet.value[x]
                                                Definition

                                                List of anticipated values used to express value of the variable, used with variables that have a codeable concept-based datatype.

                                                ShortList of anticipated values used to express value of the variable
                                                Control0..1
                                                This element is affected by the following invariants: ext-1
                                                TypeReference(ValueSet)
                                                [x] NoteSeeChoice of Data Typesfor 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()))
                                                106. Extension.extension:expectedUnitsValueSet
                                                Slice NameexpectedUnitsValueSet
                                                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()))
                                                108. Extension.extension:expectedUnitsValueSet.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
                                                110. Extension.extension:expectedUnitsValueSet.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()))
                                                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
                                                • 112. Extension.extension:expectedUnitsValueSet.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 ValueexpectedUnitsValueSet
                                                  114. Extension.extension:expectedUnitsValueSet.value[x]
                                                  Definition

                                                  List of anticipated values used to express units for the value of the variable, used with variables that have a Quantity-based datatype.

                                                  ShortList of anticipated values used to express units for the value of the variable
                                                  Control0..1
                                                  This element is affected by the following invariants: ext-1
                                                  TypeReference(ValueSet)
                                                  [x] NoteSeeChoice of Data Typesfor 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()))
                                                  116. Extension.extension:anyValueAllowed
                                                  Slice NameanyValueAllowed
                                                  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()))
                                                  118. Extension.extension:anyValueAllowed.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
                                                  120. Extension.extension:anyValueAllowed.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()))
                                                  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
                                                  • 122. Extension.extension:anyValueAllowed.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 ValueanyValueAllowed
                                                    124. Extension.extension:anyValueAllowed.value[x]
                                                    Definition

                                                    Whether the value expressed for a variable is allowed to not be restricted to the expected value set.

                                                    ShortPermissibility of unanticipated value used to express value of the variable
                                                    Control0..1
                                                    This element is affected by the following invariants: ext-1
                                                    Typeboolean
                                                    [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()))
                                                    126. 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/evidence-variable-constraint
                                                    128. 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()))