FHIR IG analytics| Package | hl7.fhir.uv.extensions.r3 |
| Resource Type | StructureDefinition |
| Id | StructureDefinition-preferredValueAlternatives.json |
| FHIR Version | R3 |
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FHIR
FHIRsmith{
"resourceType": "StructureDefinition",
"id": "preferredValueAlternatives",
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
"valueCode": "fhir"
},
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
"valueInteger": 1
},
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
"valueCode": "draft"
},
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-type-characteristics",
"valueCode": "can-bind"
},
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status-reason",
"valueCode": "Extensions that have been modified for R3 are still draft while real-world experience is collected"
}
],
"url": "http://hl7.org/fhir/StructureDefinition/preferredValueAlternatives",
"version": "5.3.0-ballot-tc1",
"name": "PreferredValueAlternatives",
"title": "Preferred Value Alternatives",
"status": "active",
"experimental": false,
"date": "2025-07-16",
"publisher": "HL7 International / FHIR Infrastructure",
"contact": [
{
"telecom": [
{
"system": "url",
"value": "http://www.hl7.org/Special/committees/fiwg"
}
]
}
],
"description": "An extension (or if multiple, a collection of alternative extensions) that SHOULD be used in the event a value element is not present.\n\nThis is similar to valueAlternatives, however, unlike valueAlternatives it is not an error if extensions other than those listed in the 'preferredValueAlternatives' are used in place of a value. Like valueAlternatives, this extension is only appropriate on primitive types. It makes no sense if specified on an element where mustHaveValue is true.",
"jurisdiction": [
{
"coding": [
{
"system": "http://unstats.un.org/unsd/methods/m49/m49.htm",
"code": "001"
}
]
}
],
"fhirVersion": "3.0.2",
"mapping": [
{
"identity": "v2",
"uri": "http://hl7.org/v2",
"name": "HL7 v2 Mapping"
},
{
"identity": "rim",
"uri": "http://hl7.org/v3",
"name": "RIM Mapping"
}
],
"kind": "complex-type",
"abstract": false,
"contextType": "datatype",
"context": [
"ElementDefinition"
],
"type": "Extension",
"baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension",
"derivation": "constraint",
"snapshot": {
"element": [
{
"id": "Extension",
"path": "Extension",
"short": "Alternative extension(s) that SHOULD be used in the event a value element is not present",
"definition": "An extension (or if multiple, a collection of alternative extensions) that SHOULD be used in the event a value element is not present.",
"comment": "This is similar to valueAlternatives, however, unlike valueAlternatives it is not an error if extensions other than those listed in the 'preferredValueAlternatives' are used in place of a value. Like valueAlternatives, this extension is only appropriate on primitive types. It makes no sense if specified on an element where mustHaveValue is true.",
"min": 0,
"max": "1",
"base": {
"path": "Extension",
"min": 0,
"max": "*"
},
"condition": [
"ele-1"
],
"constraint": [
{
"key": "ele-1",
"severity": "error",
"human": "All FHIR elements must have a @value or children",
"expression": "hasValue() | (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"
}
]
},
{
"id": "Extension.id",
"path": "Extension.id",
"representation": [
"xmlAttr"
],
"short": "xml:id (or equivalent in JSON)",
"definition": "unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.",
"min": 0,
"max": "1",
"base": {
"path": "Element.id",
"min": 0,
"max": "1"
},
"type": [
{
"code": "string"
}
],
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"id": "Extension.extension",
"path": "Extension.extension",
"slicing": {
"discriminator": [
{
"type": "value",
"path": "url"
}
],
"description": "Extensions are always sliced by (at least) url",
"rules": "open"
},
"short": "Extension",
"definition": "An Extension",
"min": 0,
"max": "0",
"base": {
"path": "Element.extension",
"min": 0,
"max": "*"
},
"type": [
{
"code": "Extension"
}
]
},
{
"id": "Extension.url",
"path": "Extension.url",
"representation": [
"xmlAttr"
],
"short": "identifies the meaning of the extension",
"definition": "Source of the definition for the extension code - a logical name or a URL.",
"comment": "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.",
"min": 1,
"max": "1",
"base": {
"path": "Extension.url",
"min": 1,
"max": "1"
},
"type": [
{
"code": "uri"
}
],
"fixedUri": "http://hl7.org/fhir/StructureDefinition/preferredValueAlternatives",
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"id": "Extension.value[x]",
"path": "Extension.value[x]",
"short": "Value of extension",
"definition": "Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list).",
"min": 1,
"max": "1",
"base": {
"path": "Extension.value[x]",
"min": 0,
"max": "1"
},
"type": [
{
"code": "uri"
}
],
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
}
]
},
"differential": {
"element": [
{
"id": "Extension",
"path": "Extension",
"short": "Alternative extension(s) that SHOULD be used in the event a value element is not present",
"definition": "An extension (or if multiple, a collection of alternative extensions) that SHOULD be used in the event a value element is not present.",
"comment": "This is similar to valueAlternatives, however, unlike valueAlternatives it is not an error if extensions other than those listed in the 'preferredValueAlternatives' are used in place of a value. Like valueAlternatives, this extension is only appropriate on primitive types. It makes no sense if specified on an element where mustHaveValue is true.",
"min": 0,
"max": "1"
},
{
"id": "Extension.extension",
"path": "Extension.extension",
"max": "0"
},
{
"id": "Extension.url",
"path": "Extension.url",
"fixedUri": "http://hl7.org/fhir/StructureDefinition/preferredValueAlternatives"
},
{
"id": "Extension.value[x]",
"path": "Extension.value[x]",
"min": 1,
"type": [
{
"code": "uri"
}
]
}
]
}
}