FHIR IG Statistics: StructureDefinition/ST
Resources that use this resource
Resources that this resource uses
| StructureDefinition |
| ANY | ANY: DataValue (V3 Data Type) |
| cs-simple | cs: Coded Simple Value |
| st-simple | st: Character String |
Narrative
Note: links and images are rebased to the (stated) source
The character string data type stands for text data, primarily intended for machine processing (e.g., sorting, querying, indexing, etc.) Used for names, symbols, and formal expressions.
Source
{
"resourceType": "StructureDefinition",
"id": "ST",
"text": {
"status": "generated",
"div": "<!-- snip (see above) -->"
},
"extension": [
{
"url": "http://hl7.org/fhir/tools/StructureDefinition/logical-target",
"_valueBoolean": {
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/data-absent-reason",
"valueCode": "not-applicable"
}
]
}
},
{
"url": "http://hl7.org/fhir/tools/StructureDefinition/xml-namespace",
"valueUri": "urn:hl7-org:v3"
},
{
"url": "http://hl7.org/fhir/tools/StructureDefinition/logical-container",
"valueUri": "http://hl7.org/cda/stds/core/StructureDefinition/ClinicalDocument"
}
],
"url": "http://hl7.org/cda/stds/core/StructureDefinition/ST",
"version": "1.0.0",
"name": "ST",
"title": "ST: CharacterString (V3 Data Type)",
"status": "active",
"experimental": false,
"date": "2025-07-21T22:05:27+00:00",
"publisher": "HL7",
"description": "The character string data type stands for text data, primarily intended for machine processing (e.g., sorting, querying, indexing, etc.) Used for names, symbols, and formal expressions.",
"fhirVersion": "5.0.0",
"mapping": [
{
"identity": "rim",
"uri": "http://hl7.org/v3",
"name": "RIM Mapping"
}
],
"kind": "logical",
"abstract": false,
"type": "http://hl7.org/cda/stds/core/StructureDefinition/ST",
"baseDefinition": "http://hl7.org/cda/stds/core/StructureDefinition/ANY",
"derivation": "specialization",
"snapshot": {
"extension": [
{
"url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
"valueString": "1.0.0"
}
],
"element": [
{
"id": "ST",
"path": "ST",
"short": "Base for all types and resources",
"definition": "The character string data type stands for text data, primarily intended for machine processing (e.g., sorting, querying, indexing, etc.) Used for names, symbols, and formal expressions.",
"min": 1,
"max": "*",
"base": {
"path": "Base",
"min": 0,
"max": "*"
},
"constraint": [
{
"key": "text-null",
"severity": "error",
"human": "xmlText and nullFlavor are mutually exclusive (one must be present)",
"expression": "(xmlText | nullFlavor).count() = 1"
}
],
"isModifier": false,
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"id": "ST.nullFlavor",
"path": "ST.nullFlavor",
"representation": [
"xmlAttr"
],
"label": "Exceptional Value Detail",
"definition": "If a value is an exceptional value (NULL-value), this specifies in what way and why proper information is missing.",
"min": 0,
"max": "1",
"base": {
"path": "ANY.nullFlavor",
"min": 0,
"max": "1"
},
"type": [
{
"code": "code",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"
]
}
],
"binding": {
"strength": "required",
"valueSet": "http://hl7.org/cda/stds/core/ValueSet/CDANullFlavor"
}
},
{
"id": "ST.representation",
"path": "ST.representation",
"representation": [
"xmlAttr"
],
"definition": "Specifies the representation of the binary data that is the content of the binary data value",
"min": 0,
"max": "1",
"base": {
"path": "ST.representation",
"min": 0,
"max": "1"
},
"type": [
{
"code": "code",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"
]
}
],
"fixedCode": "TXT"
},
{
"id": "ST.mediaType",
"path": "ST.mediaType",
"representation": [
"xmlAttr"
],
"label": "Media Type",
"definition": "Identifies the type of the encapsulated data and identifies a method to interpret or render the data.",
"min": 0,
"max": "1",
"base": {
"path": "ST.mediaType",
"min": 0,
"max": "1"
},
"type": [
{
"code": "code",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"
]
}
],
"fixedCode": "text/plain"
},
{
"id": "ST.language",
"path": "ST.language",
"representation": [
"xmlAttr"
],
"label": "Language",
"definition": "For character based information the language property specifies the human language of the text.",
"min": 0,
"max": "1",
"base": {
"path": "ST.language",
"min": 0,
"max": "1"
},
"type": [
{
"code": "code",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"
]
}
]
},
{
"id": "ST.xmlText",
"path": "ST.xmlText",
"representation": [
"xmlText"
],
"short": "Allows for mixed text content",
"comment": "This element is represented in XML as textual content. The actual name \"xmlText\" will not appear in a CDA instance.",
"min": 0,
"max": "1",
"base": {
"path": "ST.xmlText",
"min": 0,
"max": "1"
},
"type": [
{
"code": "string",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/st-simple"
]
}
]
}
]
},
"differential": {
"element": [
{
"id": "ST",
"path": "ST",
"definition": "The character string data type stands for text data, primarily intended for machine processing (e.g., sorting, querying, indexing, etc.) Used for names, symbols, and formal expressions.",
"min": 1,
"max": "*",
"constraint": [
{
"key": "text-null",
"severity": "error",
"human": "xmlText and nullFlavor are mutually exclusive (one must be present)",
"expression": "(xmlText | nullFlavor).count() = 1"
}
]
},
{
"id": "ST.representation",
"path": "ST.representation",
"representation": [
"xmlAttr"
],
"definition": "Specifies the representation of the binary data that is the content of the binary data value",
"min": 0,
"max": "1",
"type": [
{
"code": "code",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"
]
}
],
"fixedCode": "TXT"
},
{
"id": "ST.mediaType",
"path": "ST.mediaType",
"representation": [
"xmlAttr"
],
"label": "Media Type",
"definition": "Identifies the type of the encapsulated data and identifies a method to interpret or render the data.",
"min": 0,
"max": "1",
"type": [
{
"code": "code",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"
]
}
],
"fixedCode": "text/plain"
},
{
"id": "ST.language",
"path": "ST.language",
"representation": [
"xmlAttr"
],
"label": "Language",
"definition": "For character based information the language property specifies the human language of the text.",
"min": 0,
"max": "1",
"type": [
{
"code": "code",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"
]
}
]
},
{
"id": "ST.xmlText",
"path": "ST.xmlText",
"representation": [
"xmlText"
],
"short": "Allows for mixed text content",
"comment": "This element is represented in XML as textual content. The actual name \"xmlText\" will not appear in a CDA instance.",
"min": 0,
"max": "1",
"type": [
{
"code": "string",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/st-simple"
]
}
]
}
]
}
}
FHIR