FHIR IG Statistics: StructureDefinition/Precondition
Resources that use this resource
Resources that this resource uses
Narrative
Note: links and images are rebased to the (stated) source
The precondition class, derived from the ActRelationship class, is used along with the Precondition class to express a condition that must hold true before some over activity occurs.
Source
{
"resourceType": "StructureDefinition",
"id": "Precondition",
"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/xml-name",
"valueString": "precondition"
},
{
"url": "http://hl7.org/fhir/tools/StructureDefinition/logical-container",
"valueUri": "http://hl7.org/cda/stds/core/StructureDefinition/ClinicalDocument"
},
{
"url": "http://hl7.org/fhir/tools/StructureDefinition/type-profile-style",
"valueCode": "cda"
}
],
"url": "http://hl7.org/cda/stds/core/StructureDefinition/Precondition",
"version": "1.0.0",
"name": "Precondition",
"title": "Precondition (CDA Class)",
"status": "active",
"experimental": false,
"date": "2025-07-24T05:34:11+00:00",
"publisher": "HL7",
"description": "The precondition class, derived from the ActRelationship class, is used along with the Precondition class to express a condition that must hold true before some over activity occurs.",
"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/Precondition",
"baseDefinition": "http://hl7.org/cda/stds/core/StructureDefinition/InfrastructureRoot",
"derivation": "specialization",
"snapshot": {
"extension": [
{
"url": "http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version",
"valueString": "1.0.0"
}
],
"element": [
{
"id": "Precondition",
"path": "Precondition",
"short": "Base for all types and resources",
"definition": "Defines the basic properties of every data value. This is an abstract type, meaning that no value can be just a data value without belonging to any concrete type. Every concrete type is a specialization of this general abstract DataValue type.",
"min": 1,
"max": "1",
"base": {
"path": "Base",
"min": 0,
"max": "*"
},
"isModifier": false,
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"id": "Precondition.nullFlavor",
"path": "Precondition.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": "Precondition.realmCode",
"path": "Precondition.realmCode",
"definition": "When valued in an instance, this attribute signals the imposition of realm-specific constraints. The value of this attribute identifies the realm in question",
"min": 0,
"max": "*",
"base": {
"path": "InfrastructureRoot.realmCode",
"min": 0,
"max": "*"
},
"type": [
{
"code": "http://hl7.org/cda/stds/core/StructureDefinition/CS"
}
]
},
{
"id": "Precondition.typeId",
"path": "Precondition.typeId",
"definition": "When valued in an instance, this attribute signals the imposition of constraints defined in an HL7-specified message type. This might be a common type (also known as CMET in the messaging communication environment), or content included within a wrapper. The value of this attribute provides a unique identifier for the type in question.",
"min": 0,
"max": "1",
"base": {
"path": "InfrastructureRoot.typeId",
"min": 0,
"max": "1"
},
"type": [
{
"code": "http://hl7.org/cda/stds/core/StructureDefinition/II"
}
],
"constraint": [
{
"key": "II-1",
"severity": "error",
"human": "An II instance must have either a root or an nullFlavor.",
"expression": "root.exists() or nullFlavor.exists()",
"source": "http://hl7.org/cda/stds/core/StructureDefinition/InfrastructureRoot"
}
]
},
{
"id": "Precondition.typeId.nullFlavor",
"path": "Precondition.typeId.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": "Precondition.typeId.assigningAuthorityName",
"path": "Precondition.typeId.assigningAuthorityName",
"representation": [
"xmlAttr"
],
"label": "Assigning Authority Name",
"definition": "A human readable name or mnemonic for the assigning authority. The Assigning Authority Name has no computational value. The purpose of a Assigning Authority Name is to assist an unaided human interpreter of an II value to interpret the authority. Note: no automated processing must depend on the assigning authority name to be present in any form.",
"min": 0,
"max": "1",
"base": {
"path": "II.assigningAuthorityName",
"min": 0,
"max": "1"
},
"type": [
{
"code": "string",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/st-simple"
]
}
]
},
{
"id": "Precondition.typeId.displayable",
"path": "Precondition.typeId.displayable",
"representation": [
"xmlAttr"
],
"label": "Displayable",
"definition": "Specifies if the identifier is intended for human display and data entry (displayable = true) as opposed to pure machine interoperation (displayable = false).",
"min": 0,
"max": "1",
"base": {
"path": "II.displayable",
"min": 0,
"max": "1"
},
"type": [
{
"code": "boolean",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/bl-simple"
]
}
]
},
{
"id": "Precondition.typeId.root",
"path": "Precondition.typeId.root",
"representation": [
"xmlAttr"
],
"label": "Root",
"definition": "Identifies the type as an HL7 Registered model",
"min": 1,
"max": "1",
"base": {
"path": "II.root",
"min": 0,
"max": "1"
},
"type": [
{
"code": "string",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/oid",
"http://hl7.org/cda/stds/core/StructureDefinition/uuid",
"http://hl7.org/cda/stds/core/StructureDefinition/ruid"
]
}
],
"fixedString": "2.16.840.1.113883.1.3"
},
{
"id": "Precondition.typeId.extension",
"path": "Precondition.typeId.extension",
"representation": [
"xmlAttr"
],
"label": "Extension",
"definition": "A character string as a unique identifier within the scope of the identifier root.",
"min": 1,
"max": "1",
"base": {
"path": "II.extension",
"min": 0,
"max": "1"
},
"type": [
{
"code": "string",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/st-simple"
]
}
]
},
{
"id": "Precondition.templateId",
"path": "Precondition.templateId",
"definition": "When valued in an instance, this attribute signals the imposition of a set of template-defined constraints. The value of this attribute provides a unique identifier for the templates in question",
"min": 0,
"max": "*",
"base": {
"path": "InfrastructureRoot.templateId",
"min": 0,
"max": "*"
},
"type": [
{
"code": "http://hl7.org/cda/stds/core/StructureDefinition/II"
}
]
},
{
"id": "Precondition.typeCode",
"path": "Precondition.typeCode",
"representation": [
"xmlAttr"
],
"min": 0,
"max": "1",
"base": {
"path": "Precondition.typeCode",
"min": 0,
"max": "1"
},
"type": [
{
"code": "code",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"
]
}
],
"fixedCode": "PRCN",
"binding": {
"strength": "required",
"valueSet": "http://hl7.org/cda/stds/core/ValueSet/CDAActRelationshipType"
}
},
{
"id": "Precondition.criterion",
"path": "Precondition.criterion",
"min": 1,
"max": "1",
"base": {
"path": "Precondition.criterion",
"min": 1,
"max": "1"
},
"type": [
{
"code": "http://hl7.org/cda/stds/core/StructureDefinition/Criterion"
}
]
}
]
},
"differential": {
"element": [
{
"id": "Precondition",
"path": "Precondition",
"min": 1,
"max": "1"
},
{
"id": "Precondition.typeCode",
"path": "Precondition.typeCode",
"representation": [
"xmlAttr"
],
"min": 0,
"max": "1",
"type": [
{
"code": "code",
"profile": [
"http://hl7.org/cda/stds/core/StructureDefinition/cs-simple"
]
}
],
"fixedCode": "PRCN",
"binding": {
"strength": "required",
"valueSet": "http://hl7.org/cda/stds/core/ValueSet/CDAActRelationshipType"
}
},
{
"id": "Precondition.criterion",
"path": "Precondition.criterion",
"min": 1,
"max": "1",
"type": [
{
"code": "http://hl7.org/cda/stds/core/StructureDefinition/Criterion"
}
]
}
]
}
}
FHIR