StructureDefinition
for
id
{
"resourceType" : "StructureDefinition",
"id" : "id",
"meta" : {
"lastUpdated" : "2019-11-01T09:29:23.356+11:00"
},
"text" : {
"status" : "generated",
"div" : "<div>!-- Snipped for Brevity --></div>"
"div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\">to do</div>"
},
"extension" : [{
"url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
"valueCode" : "normative"
},
{
"url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version",
"valueCode" : "4.0.0"
},
{
"url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics",
"valueCode" : "has-length"
},
{
"url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
"valueCode" : "fhir"
}],
"url" : "http://hl7.org/fhir/StructureDefinition/id",
"version" : "4.0.1",
"version" : "6.0.0-ballot3",
"name" : "id",
"status" : "active",
"date" : "2019-11-01T09:29:23+11:00",
"publisher" : "HL7 FHIR Standard",
"experimental" : false,
"date" : "2025-11-08T03:13:31+00:00",
"publisher" : "HL7 International / FHIR Infrastructure",
"contact" : [{
"telecom" : [{
"system" : "url",
"value" : "http://hl7.org/fhir"
}]
},
{
"telecom" : [{
"system" : "url",
"value" : "http://www.hl7.org/Special/committees/fiwg"
}]
}],
"description" : "Base StructureDefinition for id type: Any combination of letters, numerals, \"-\" and \".\", with a length limit of 64 characters. (This might be an integer, an unprefixed OID, UUID or any other identifier pattern that meets these constraints.) Ids are case-insensitive.",
"fhirVersion" : "4.0.1",
"description" : "id type: Any combination of letters, numerals, \"-\" and \".\", with a length limit of 64 characters. (This might be an integer, an unprefixed OID, UUID or any other identifier pattern that meets these constraints.) Ids are case-insensitive.",
"jurisdiction" : [{
"coding" : [{
"system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
"code" : "001",
"display" : "World"
}]
}],
"fhirVersion" : "6.0.0-ballot3",
"kind" : "primitive-type",
"abstract" : false,
"type" : "id",
"baseDefinition" : "http://hl7.org/fhir/StructureDefinition/string",
"derivation" : "specialization",
"snapshot" : {
"element" : [{
"id" : "id",
"path" : "id",
"short" : "Primitive Type id",
"definition" : "Any combination of letters, numerals, \"-\" and \".\", with a length limit of 64 characters. (This might be an integer, an unprefixed OID, UUID or any other identifier pattern that meets these constraints.) Ids are case-insensitive.",
"comment" : "RFC 4122",
"min" : 0,
"max" : "*",
"base" : {
"path" : "id",
"min" : 0,
"max" : "*"
},
"constraint" : [{
"key" : "ele-1",
"severity" : "error",
"human" : "All FHIR elements must have a @value or children",
"human" : "All FHIR elements must have a @value or children or both",
"expression" : "hasValue() or (children().count() > id.count())",
"xpath" : "@value|f:*|h:div",
"source" : "http://hl7.org/fhir/StructureDefinition/Element"
}],
"isModifier" : false,
"isSummary" : false
},
{
"id" : "id.id",
"path" : "id.id",
"representation" : ["xmlAttr"],
"short" : "xml:id (or equivalent in JSON)",
"definition" : "unique id for the element within a resource (for internal references)",
"min" : 0,
"max" : "1",
"base" : {
"path" : "Element.id",
"min" : 0,
"max" : "1"
},
"type" : [{
"extension" : [{
"url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
"valueUrl" : "string"
}],
"code" : "http://hl7.org/fhirpath/System.String"
}],
"isModifier" : false,
"isSummary" : false
},
{
"id" : "id.extension",
"path" : "id.extension",
"short" : "Additional content defined by implementations",
"definition" : "May be used to represent additional information that is not part of the basic definition of the resource. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.",
"definition" : "May be used to represent additional information that is not part of the basic definition of the resource. 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.",
"comment" : "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.",
"alias" : ["extensions",
"user content"],
"min" : 0,
"max" : "*",
"base" : {
"path" : "Element.extension",
"min" : 0,
"max" : "*"
},
"type" : [{
"code" : "Extension"
}],
"constraint" : [{
"key" : "ele-1",
"severity" : "error",
"human" : "All FHIR elements must have a @value or children",
"expression" : "hasValue() or (children().count() > id.count())",
"xpath" : "@value|f:*|h:div",
"source" : "http://hl7.org/fhir/StructureDefinition/Element"
},
{
"key" : "ext-1",
"severity" : "error",
"human" : "Must have either extensions or value[x], not both",
"expression" : "extension.exists() != value.exists()",
"xpath" : "exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])",
"source" : "http://hl7.org/fhir/StructureDefinition/Extension"
}],
"isModifier" : false,
"isSummary" : false
},
{
"id" : "id.value",
"path" : "id.value",
"representation" : ["xmlAttr"],
"short" : "Primitive value for id",
"definition" : "Primitive value for id",
"min" : 0,
"max" : "1",
"base" : {
"path" : "string.value",
"min" : 0,
"max" : "1"
},
"type" : [{
"extension" : [{
"url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
"valueUrl" : "string"
"valueUrl" : "id"
},
{
"url" : "http://hl7.org/fhir/StructureDefinition/regex",
"valueString" : "[A-Za-z0-9\\-\\.]{1,64}"
}],
"code" : "http://hl7.org/fhirpath/System.String"
}],
"isModifier" : false,
"isSummary" : false
}]
},
"differential" : {
"element" : [{
"id" : "id",
"path" : "id",
"short" : "Primitive Type id",
"definition" : "Any combination of letters, numerals, \"-\" and \".\", with a length limit of 64 characters. (This might be an integer, an unprefixed OID, UUID or any other identifier pattern that meets these constraints.) Ids are case-insensitive.",
"comment" : "RFC 4122",
"min" : 0,
"max" : "*"
},
{
"id" : "id.value",
"path" : "id.value",
"representation" : ["xmlAttr"],
"short" : "Primitive value for id",
"definition" : "Primitive value for id",
"min" : 0,
"max" : "1",
"type" : [{
"extension" : [{
"url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type",
"valueUrl" : "id"
},
{
"url" : "http://hl7.org/fhir/StructureDefinition/regex",
"valueString" : "[A-Za-z0-9\\-\\.]{1,64}"
}],
"code" : "http://hl7.org/fhirpath/System.String"
}]
}]
}
}
Usage
note:
every
effort
has
been
made
to
ensure
that
the
examples
are
correct
and
useful,
but
they
are
not
a
normative
part
of
the
specification.
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Propose
a
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