Digital Referral Prescription Implementation Guide
1.0.0 - STU

Digital Referral Prescription Implementation Guide, published by eHealth Platform. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/hl7-be/referral/ and changes regularly. See the Directory of published versions

## Extension: BeValidityPeriod - TTL Profile

Active as of 2026-03-01

TTL representation of the be-ext-validity-period extension.

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    @prefix fhir: <http://hl7.org/fhir/> .
    @prefix owl: <http://www.w3.org/2002/07/owl#> .
    @prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
    @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
    @prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

    # - resource -------------------------------------------------------------------

     a fhir:StructureDefinition ;
      fhir:nodeRole fhir:treeRoot ;
      fhir:id [ fhir:v "be-ext-validity-period"] ; #
      fhir:text [
    fhir:status [ fhir:v "extensions" ] ;
    fhir:div [ fhir:v "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: StructureDefinition be-ext-validity-period</b></p><a name=\"be-ext-validity-period\"> </a><a name=\"hcbe-ext-validity-period\"> </a><table border=\"0\" cellpadding=\"0\" cellspacing=\"0\" style=\"border: 0px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top;\"><tr style=\"border: 1px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top\"><th style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px\" class=\"hierarchy\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"The logical name of the element\">Name</a></th><th style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px\" class=\"hierarchy\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Information about the use of the element\">Flags</a></th><th style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px\" class=\"hierarchy\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Minimum and Maximum # of times the element can appear in the instance\">Card.</a></th><th style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px; width: 100px\" class=\"hierarchy\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Reference to the type of the element\">Type</a></th><th style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom: 3px\" class=\"hierarchy\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Additional information about the element\">Description &amp; Constraints</a><span style=\"float: right\"><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Legend for this format\"><img src=\"data:image/png;base64, \" alt=\"doco\" style=\"background-color: inherit\"/></a></span></th></tr><tr style=\"border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white\"><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_element.gif\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Element\" class=\"hierarchy\"/> <a href=\"StructureDefinition-be-ext-validity-period-definitions.html#Extension\" title=\"Begin and end date of the validity of the request\">Extension</a><a name=\"Extension\"> </a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">0</span><span style=\"opacity: 0.5\">..</span><span style=\"opacity: 0.5\">*</span></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R4/extensibility.html#Extension\">Extension</a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\">BeValidityPeriod</td></tr>#xD;\n<tr style=\"border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7\"><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_extension_simple.png\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Simple Extension\" class=\"hierarchy\"/> <a style=\"text-decoration:line-through; text-decoration:line-through\" href=\"StructureDefinition-be-ext-validity-period-definitions.html#Extension.extension\">extension</a><a name=\"Extension.extension\"> </a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"text-decoration:line-through\"/><span style=\"text-decoration:line-through\">0</span><span style=\"text-decoration:line-through\">..</span><span style=\"text-decoration:line-through\">0</span></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"font-style: italic\">Extension</span></td></tr>#xD;\n<tr style=\"border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white\"><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck10.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_element.gif\" alt=\".\" style=\"background-color: white; background-color: inherit\" title=\"Element\" class=\"hierarchy\"/> <a href=\"StructureDefinition-be-ext-validity-period-definitions.html#Extension.url\">url</a><a name=\"Extension.url\"> </a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">1</span><span style=\"opacity: 0.5\">..</span><span style=\"opacity: 0.5\">1</span></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a style=\"opacity: 0.5; opacity: 0.5\" href=\"http://hl7.org/fhir/R4/datatypes.html#uri\">uri</a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"color: darkgreen\">\"https://www.ehealth.fgov.be/standards/fhir/drp/StructureDefinition/be-ext-validity-period\"</span></td></tr>#xD;\n<tr style=\"border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7\"><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck00.png)\" class=\"hierarchy\"><img src=\"tbl_spacer.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"tbl_vjoin_end.png\" alt=\".\" style=\"background-color: inherit\" class=\"hierarchy\"/><img src=\"icon_datatype.gif\" alt=\".\" style=\"background-color: #F7F7F7; background-color: inherit\" title=\"Data Type\" class=\"hierarchy\"/> <a href=\"StructureDefinition-be-ext-validity-period-definitions.html#Extension.value[x]\">value[x]</a><a name=\"Extension.value_x_\"> </a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"/><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">0</span><span style=\"opacity: 0.5\">..</span><span style=\"opacity: 0.5\">1</span></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><a href=\"http://hl7.org/fhir/R4/datatypes.html#Period\">Period</a></td><td style=\"vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px\" class=\"hierarchy\"><span style=\"opacity: 0.5\">Value of extension</span></td></tr>#xD;\n<tr><td colspan=\"5\" class=\"hierarchy\"><br/><a href=\"https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views\" title=\"Legend for this format\"><img src=\"data:image/png;base64, \" alt=\"doco\" style=\"background-color: inherit\"/> Documentation for this format</a></td></tr></table></div>"^^rdf:XMLLiteral ]
      ] ; #
      fhir:url [
    fhir:v "https://www.ehealth.fgov.be/standards/fhir/drp/StructureDefinition/be-ext-validity-period"^^xsd:anyURI ;
    fhir:l <https://www.ehealth.fgov.be/standards/fhir/drp/StructureDefinition/be-ext-validity-period>
      ] ; #
      fhir:version [ fhir:v "1.0.0"] ; #
      fhir:name [ fhir:v "BeValidityPeriod"] ; #
      fhir:title [ fhir:v "BeValidityPeriod"] ; #
      fhir:status [ fhir:v "active"] ; #
      fhir:date [ fhir:v "2026-03-01T13:54:10+00:00"^^xsd:dateTime] ; #
      fhir:publisher [ fhir:v "eHealth Platform"] ; #
      fhir:contact ( [
    fhir:name [ fhir:v "eHealth Platform" ] ;
        ( fhir:telecom [
    fhir:system [ fhir:v "url" ] ;
    fhir:value [ fhir:v "https://www.ehealth.fgov.be/standards/fhir" ]     ] [
    fhir:system [ fhir:v "email" ] ;
    fhir:value [ fhir:v "support@be-ehealth-standards.atlassian.net" ]     ] )
      ] [
    fhir:name [ fhir:v "Message Structure eHealth" ] ;
        ( fhir:telecom [
    fhir:system [ fhir:v "email" ] ;
    fhir:value [ fhir:v "support@be-ehealth-standards.atlassian.net" ] ;
    fhir:use [ fhir:v "work" ]     ] )
      ] ) ; #
      fhir:description [ fhir:v "Begin and end date of the validity of the request"] ; #
      fhir:jurisdiction ( [
        ( fhir:coding [
    fhir:system [
    fhir:v "urn:iso:std:iso:3166"^^xsd:anyURI ;
    fhir:l <urn:iso:std:iso:3166>       ] ;
    fhir:code [ fhir:v "BE" ] ;
    fhir:display [ fhir:v "Belgium" ]     ] )
      ] ) ; #
      fhir:fhirVersion [ fhir:v "4.0.1"] ; #
      fhir:mapping ( [
    fhir:identity [ fhir:v "rim" ] ;
    fhir:uri [
    fhir:v "http://hl7.org/v3"^^xsd:anyURI ;
    fhir:l <http://hl7.org/v3>     ] ;
    fhir:name [ fhir:v "RIM Mapping" ]
      ] ) ; #
      fhir:kind [ fhir:v "complex-type"] ; #
      fhir:abstract [ fhir:v false] ; #
      fhir:context ( [
    fhir:type [ fhir:v "element" ] ;
    fhir:expression [ fhir:v "ServiceRequest" ]
      ] [
    fhir:type [ fhir:v "element" ] ;
    fhir:expression [ fhir:v "RequestGroup" ]
      ] [
    fhir:type [ fhir:v "element" ] ;
    fhir:expression [ fhir:v "MedicationRequest" ]
      ] ) ; #
      fhir:type [
    fhir:v "Extension"^^xsd:anyURI ;
    fhir:l fhir:Extension
      ] ; #
      fhir:baseDefinition [
    fhir:v "http://hl7.org/fhir/StructureDefinition/Extension"^^xsd:anyURI ;
    fhir:l <http://hl7.org/fhir/StructureDefinition/Extension>
      ] ; #
      fhir:derivation [ fhir:v "constraint"] ; #
      fhir:snapshot [
        ( fhir:extension [
    fhir:url [
    fhir:v "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version"^^xsd:anyURI ;
    fhir:l <http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version>       ] ;
    fhir:value [
    a fhir:String ;
    fhir:v "4.0.1"       ]     ] ) ;
        ( fhir:element [
    fhir:id [ fhir:v "Extension" ] ;
    fhir:path [ fhir:v "Extension" ] ;
    fhir:short [ fhir:v "BeValidityPeriod" ] ;
    fhir:definition [ fhir:v "Begin and end date of the validity of the request" ] ;
    fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ;
    fhir:max [ fhir:v "*" ] ;
    fhir:base [
    fhir:path [ fhir:v "Extension" ] ;
    fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ;
    fhir:max [ fhir:v "*" ]       ] ;
          ( fhir:condition [ fhir:v "ele-1" ] ) ;
          ( fhir:constraint [
    fhir:key [ fhir:v "ele-1" ] ;
    fhir:severity [ fhir:v "error" ] ;
    fhir:human [ fhir:v "All FHIR elements must have a @value or children" ] ;
    fhir:expression [ fhir:v "hasValue() or (children().count() > id.count())" ] ;
    fhir:xpath [ fhir:v "@value|f:*|h:div" ] ;
    fhir:source [
    fhir:v "http://hl7.org/fhir/StructureDefinition/Element"^^xsd:anyURI ;
    fhir:l <http://hl7.org/fhir/StructureDefinition/Element>         ]       ] [
    fhir:key [ fhir:v "ext-1" ] ;
    fhir:severity [ fhir:v "error" ] ;
    fhir:human [ fhir:v "Must have either extensions or value[x], not both" ] ;
    fhir:expression [ fhir:v "extension.exists() != value.exists()" ] ;
    fhir:xpath [ fhir:v "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" ] ;
    fhir:source [
    fhir:v "http://hl7.org/fhir/StructureDefinition/Extension"^^xsd:anyURI ;
    fhir:l <http://hl7.org/fhir/StructureDefinition/Extension>         ]       ] ) ;
    fhir:isModifier [ fhir:v false ]     ] [
    fhir:id [ fhir:v "Extension.id" ] ;
    fhir:path [ fhir:v "Extension.id" ] ;
          ( fhir:representation [ fhir:v "xmlAttr" ] ) ;
    fhir:short [ fhir:v "Unique id for inter-element referencing" ] ;
    fhir:definition [ fhir:v "Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces." ] ;
    fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ;
    fhir:max [ fhir:v "1" ] ;
    fhir:base [
    fhir:path [ fhir:v "Element.id" ] ;
    fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ;
    fhir:max [ fhir:v "1" ]       ] ;
          ( fhir:type [
            ( fhir:extension [
    fhir:url [
    fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"^^xsd:anyURI ;
    fhir:l <http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type>           ] ;
    fhir:value [
    a fhir:Url ;
    fhir:v "string"^^xsd:anyURI ;
    fhir:l fhir:string           ]         ] ) ;
    fhir:code [
    fhir:v "http://hl7.org/fhirpath/System.String"^^xsd:anyURI ;
    fhir:l <http://hl7.org/fhirpath/System.String>         ]       ] ) ;
    fhir:isModifier [ fhir:v false ] ;
    fhir:isSummary [ fhir:v false ] ;
          ( fhir:mapping [
    fhir:identity [ fhir:v "rim" ] ;
    fhir:map [ fhir:v "n/a" ]       ] )     ] [
    fhir:id [ fhir:v "Extension.extension" ] ;
    fhir:path [ fhir:v "Extension.extension" ] ;
    fhir:slicing [
            ( fhir:discriminator [
    fhir:type [ fhir:v "value" ] ;
    fhir:path [ fhir:v "url" ]         ] ) ;
    fhir:description [ fhir:v "Extensions are always sliced by (at least) url" ] ;
    fhir:rules [ fhir:v "open" ]       ] ;
    fhir:short [ fhir:v "Extension" ] ;
    fhir:definition [ fhir:v "An Extension" ] ;
    fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ;
    fhir:max [ fhir:v "0" ] ;
    fhir:base [
    fhir:path [ fhir:v "Element.extension" ] ;
    fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ;
    fhir:max [ fhir:v "*" ]       ] ;
          ( fhir:type [
    fhir:code [
    fhir:v "Extension"^^xsd:anyURI ;
    fhir:l fhir:Extension         ]       ] ) ;
          ( fhir:constraint [
    fhir:key [ fhir:v "ele-1" ] ;
    fhir:severity [ fhir:v "error" ] ;
    fhir:human [ fhir:v "All FHIR elements must have a @value or children" ] ;
    fhir:expression [ fhir:v "hasValue() or (children().count() > id.count())" ] ;
    fhir:xpath [ fhir:v "@value|f:*|h:div" ] ;
    fhir:source [
    fhir:v "http://hl7.org/fhir/StructureDefinition/Element"^^xsd:anyURI ;
    fhir:l <http://hl7.org/fhir/StructureDefinition/Element>         ]       ] [
    fhir:key [ fhir:v "ext-1" ] ;
    fhir:severity [ fhir:v "error" ] ;
    fhir:human [ fhir:v "Must have either extensions or value[x], not both" ] ;
    fhir:expression [ fhir:v "extension.exists() != value.exists()" ] ;
    fhir:xpath [ fhir:v "exists(f:extension)!=exists(f:*[starts-with(local-name(.), \"value\")])" ] ;
    fhir:source [
    fhir:v "http://hl7.org/fhir/StructureDefinition/Extension"^^xsd:anyURI ;
    fhir:l <http://hl7.org/fhir/StructureDefinition/Extension>         ]       ] ) ;
    fhir:isModifier [ fhir:v false ] ;
    fhir:isSummary [ fhir:v false ]     ] [
    fhir:id [ fhir:v "Extension.url" ] ;
    fhir:path [ fhir:v "Extension.url" ] ;
          ( fhir:representation [ fhir:v "xmlAttr" ] ) ;
    fhir:short [ fhir:v "identifies the meaning of the extension" ] ;
    fhir:definition [ fhir:v "Source of the definition for the extension code - a logical name or a URL." ] ;
    fhir:comment [ fhir:v "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." ] ;
    fhir:min [ fhir:v "1"^^xsd:nonNegativeInteger ] ;
    fhir:max [ fhir:v "1" ] ;
    fhir:base [
    fhir:path [ fhir:v "Extension.url" ] ;
    fhir:min [ fhir:v "1"^^xsd:nonNegativeInteger ] ;
    fhir:max [ fhir:v "1" ]       ] ;
          ( fhir:type [
            ( fhir:extension [
    fhir:url [
    fhir:v "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"^^xsd:anyURI ;
    fhir:l <http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type>           ] ;
    fhir:value [
    a fhir:Url ;
    fhir:v "uri"^^xsd:anyURI ;
    fhir:l fhir:uri           ]         ] ) ;
    fhir:code [
    fhir:v "http://hl7.org/fhirpath/System.String"^^xsd:anyURI ;
    fhir:l <http://hl7.org/fhirpath/System.String>         ]       ] ) ;
    fhir:fixed [
    a fhir:Uri ;
    fhir:v "https://www.ehealth.fgov.be/standards/fhir/drp/StructureDefinition/be-ext-validity-period"^^xsd:anyURI ;
    fhir:l <https://www.ehealth.fgov.be/standards/fhir/drp/StructureDefinition/be-ext-validity-period>       ] ;
    fhir:isModifier [ fhir:v false ] ;
    fhir:isSummary [ fhir:v false ] ;
          ( fhir:mapping [
    fhir:identity [ fhir:v "rim" ] ;
    fhir:map [ fhir:v "N/A" ]       ] )     ] [
    fhir:id [ fhir:v "Extension.value[x]" ] ;
    fhir:path [ fhir:v "Extension.value[x]" ] ;
    fhir:short [ fhir:v "Value of extension" ] ;
    fhir:definition [ fhir:v "Value of extension - must be one of a constrained set of the data types (see [Extensibility](http://hl7.org/fhir/R4/extensibility.html) for a list)." ] ;
    fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ;
    fhir:max [ fhir:v "1" ] ;
    fhir:base [
    fhir:path [ fhir:v "Extension.value[x]" ] ;
    fhir:min [ fhir:v "0"^^xsd:nonNegativeInteger ] ;
    fhir:max [ fhir:v "1" ]       ] ;
          ( fhir:type [
    fhir:code [
    fhir:v "Period"^^xsd:anyURI ;
    fhir:l fhir:Period         ]       ] ) ;
          ( fhir:constraint [
    fhir:key [ fhir:v "ele-1" ] ;
    fhir:severity [ fhir:v "error" ] ;
    fhir:human [ fhir:v "All FHIR elements must have a @value or children" ] ;
    fhir:expression [ fhir:v "hasValue() or (children().count() > id.count())" ] ;
    fhir:xpath [ fhir:v "@value|f:*|h:div" ] ;
    fhir:source [
    fhir:v "http://hl7.org/fhir/StructureDefinition/Element"^^xsd:anyURI ;
    fhir:l <http://hl7.org/fhir/StructureDefinition/Element>         ]       ] ) ;
    fhir:isModifier [ fhir:v false ] ;
    fhir:isSummary [ fhir:v false ] ;
          ( fhir:mapping [
    fhir:identity [ fhir:v "rim" ] ;
    fhir:map [ fhir:v "N/A" ]       ] )     ] )
      ] ; #
      fhir:differential [
        ( fhir:element [
    fhir:id [ fhir:v "Extension" ] ;
    fhir:path [ fhir:v "Extension" ] ;
    fhir:short [ fhir:v "BeValidityPeriod" ] ;
    fhir:definition [ fhir:v "Begin and end date of the validity of the request" ]     ] [
    fhir:id [ fhir:v "Extension.extension" ] ;
    fhir:path [ fhir:v "Extension.extension" ] ;
    fhir:max [ fhir:v "0" ]     ] [
    fhir:id [ fhir:v "Extension.url" ] ;
    fhir:path [ fhir:v "Extension.url" ] ;
    fhir:fixed [
    a fhir:Uri ;
    fhir:v "https://www.ehealth.fgov.be/standards/fhir/drp/StructureDefinition/be-ext-validity-period"^^xsd:anyURI ;
    fhir:l <https://www.ehealth.fgov.be/standards/fhir/drp/StructureDefinition/be-ext-validity-period>       ]     ] [
    fhir:id [ fhir:v "Extension.value[x]" ] ;
    fhir:path [ fhir:v "Extension.value[x]" ] ;
          ( fhir:type [
    fhir:code [
    fhir:v "Period"^^xsd:anyURI ;
    fhir:l fhir:Period         ]       ] )     ] )
      ] . #