R4 Draft for Comment
AdministrationThis page is part of the FHIR Specification (v3.2.0: R4 Ballot 1). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions 
. Page versions: R5 R4B R4 R3
| Patient Care Work Group | Maturity Level: N/A | Ballot Status: Informative | Compartments: Practitioner |
StructureDefinition for linkage
{
"resourceType": "StructureDefinition",
"id": "Linkage",
"meta": {
"lastUpdated": "2017-12-20T15:52:34.818+11:00"
},
"text": {
"status": "generated",
"div": "<div>!-- Snipped for Brevity --></div>"
},
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
"valueInteger": 0
},
{
"url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
"valueCode": "pc"
}
],
"url": "http://hl7.org/fhir/StructureDefinition/Linkage",
"name": "Linkage",
"status": "draft",
"date": "2017-12-20T15:52:34+11:00",
"publisher": "Health Level Seven International (Patient Care)",
"contact": [
{
"telecom": [
{
"system": "url",
"value": "http://hl7.org/fhir"
}
]
},
{
"telecom": [
{
"system": "url",
"value": "http://www.hl7.org/Special/committees/patientcare/index.cfm"
}
]
}
],
"description": "Identifies two or more records (resource instances) that are referring to the same real-world \"occurrence\".",
"fhirVersion": "3.2.0",
"mapping": [
{
"identity": "rim",
"uri": "http://hl7.org/v3",
"name": "RIM Mapping"
},
{
"identity": "w5",
"uri": "http://hl7.org/fhir/w5",
"name": "W5 Mapping"
}
],
"kind": "resource",
"abstract": false,
"type": "Linkage",
"baseDefinition": "http://hl7.org/fhir/StructureDefinition/DomainResource",
"derivation": "specialization",
"snapshot": {
"element": [
{
"id": "Linkage",
"path": "Linkage",
"short": "Links records for 'same' item",
"definition": "Identifies two or more records (resource instances) that are referring to the same real-world \"occurrence\".",
"min": 0,
"max": "*",
"constraint": [
{
"key": "dom-2",
"severity": "error",
"human": "If the resource is contained in another resource, it SHALL NOT contain nested Resources",
"expression": "contained.contained.empty()",
"xpath": "not(parent::f:contained and f:contained)",
"source": "DomainResource"
},
{
"key": "dom-1",
"severity": "error",
"human": "If the resource is contained in another resource, it SHALL NOT contain any narrative",
"expression": "contained.text.empty()",
"xpath": "not(parent::f:contained and f:text)",
"source": "DomainResource"
},
{
"key": "dom-4",
"severity": "error",
"human": "If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated",
"expression": "contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()",
"xpath": "not(exists(f:contained/*/f:meta/f:versionId)) and not(exists(f:contained/*/f:meta/f:lastUpdated))",
"source": "DomainResource"
},
{
"key": "dom-3",
"severity": "error",
"human": "If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource",
"expression": "contained.all(('#'+id in %resource.descendants().reference) or descendants().where(reference = '#').exists())",
"xpath": "not(exists(for $contained in f:contained return $contained[not(parent::*/descendant::f:reference/@value=concat('#', $contained/*/id/@value) or descendant::reference[@value='#'])]))",
"source": "DomainResource"
},
{
"key": "lnk-1",
"severity": "error",
"human": "Must have at least two items",
"expression": "item.count()>1",
"xpath": "count(f:item)>1"
}
],
"mapping": [
{
"identity": "rim",
"map": "Entity. Role, or Act"
},
{
"identity": "rim",
"map": "N/A - RIM doesn't know how to do this"
},
{
"identity": "w5",
"map": "infrastructure.structure"
}
]
},
{
"id": "Linkage.id",
"path": "Linkage.id",
"short": "Logical id of this artifact",
"definition": "The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.",
"comment": "The only time that a resource does not have an id is when it is being submitted to the server using a create operation.",
"min": 0,
"max": "1",
"base": {
"path": "Resource.id",
"min": 0,
"max": "1"
},
"type": [
{
"code": "id"
}
],
"isSummary": true
},
{
"id": "Linkage.meta",
"path": "Linkage.meta",
"short": "Metadata about the resource",
"definition": "The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.",
"min": 0,
"max": "1",
"base": {
"path": "Resource.meta",
"min": 0,
"max": "1"
},
"type": [
{
"code": "Meta"
}
],
"isSummary": true
},
{
"id": "Linkage.implicitRules",
"path": "Linkage.implicitRules",
"short": "A set of rules under which this content was created",
"definition": "A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content.",
"comment": "Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. \n\nThis element is labelled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation.",
"min": 0,
"max": "1",
"base": {
"path": "Resource.implicitRules",
"min": 0,
"max": "1"
},
"type": [
{
"code": "uri"
}
],
"isModifier": true,
"isSummary": true
},
{
"id": "Linkage.language",
"path": "Linkage.language",
"short": "Language of the resource content",
"definition": "The base language in which the resource is written.",
"comment": "Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute).",
"min": 0,
"max": "1",
"base": {
"path": "Resource.language",
"min": 0,
"max": "1"
},
"type": [
{
"code": "code"
}
],
"binding": {
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet",
"valueReference": {
"reference": "http://hl7.org/fhir/ValueSet/all-languages"
}
},
{
"url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
"valueString": "Language"
},
{
"url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding",
"valueBoolean": true
}
],
"strength": "extensible",
"description": "A human language.",
"valueSetReference": {
"reference": "http://hl7.org/fhir/ValueSet/languages"
}
}
},
{
"id": "Linkage.text",
"path": "Linkage.text",
"short": "Text summary of the resource, for human interpretation",
"definition": "A human-readable narrative that contains a summary of the resource, and may be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it \"clinically safe\" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.",
"comment": "Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a \"text blob\" or where text is additionally entered raw or narrated and encoded in formation is added later.",
"alias": [
"narrative",
"html",
"xhtml",
"display"
],
"min": 0,
"max": "1",
"base": {
"path": "DomainResource.text",
"min": 0,
"max": "1"
},
"type": [
{
"code": "Narrative"
}
],
"condition": [
"dom-1"
],
"mapping": [
{
"identity": "rim",
"map": "Act.text?"
}
]
},
{
"id": "Linkage.contained",
"path": "Linkage.contained",
"short": "Contained, inline Resources",
"definition": "These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, and nor can they have their own independent transaction scope.",
"comment": "This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again.",
"alias": [
"inline resources",
"anonymous resources",
"contained resources"
],
"min": 0,
"max": "*",
"base": {
"path": "DomainResource.contained",
"min": 0,
"max": "*"
},
"type": [
{
"code": "Resource"
}
],
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"id": "Linkage.extension",
"path": "Linkage.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. In order 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 is allowed to 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": "DomainResource.extension",
"min": 0,
"max": "*"
},
"type": [
{
"code": "Extension"
}
],
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"id": "Linkage.modifierExtension",
"path": "Linkage.modifierExtension",
"short": "Extensions that cannot be ignored",
"definition": "May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order 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 is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.",
"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": "DomainResource.modifierExtension",
"min": 0,
"max": "*"
},
"type": [
{
"code": "Extension"
}
],
"isModifier": true,
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"id": "Linkage.active",
"path": "Linkage.active",
"short": "Whether this linkage assertion is active or not",
"definition": "Indicates whether the asserted set of linkages are considered to be \"in effect\".",
"comment": "If false, any asserted linkages should not be considered current/relevant/applicable.",
"requirements": "Need to be able to mark a linkage record as not to be used because it was created in error.",
"min": 0,
"max": "1",
"type": [
{
"code": "boolean"
}
],
"defaultValueBoolean": true,
"isSummary": true,
"mapping": [
{
"identity": "w5",
"map": "FiveWs.status"
},
{
"identity": "w5",
"map": "status"
}
]
},
{
"id": "Linkage.author",
"path": "Linkage.author",
"short": "Who is responsible for linkages",
"definition": "Identifies the user or organization responsible for asserting the linkages and who establishes the context for evaluating the nature of each linkage.",
"requirements": "\"Primary\" for the same set of linked resources may be different from different user's/organization's perspectives.",
"min": 0,
"max": "1",
"type": [
{
"code": "Reference",
"targetProfile": "http://hl7.org/fhir/StructureDefinition/Practitioner"
},
{
"code": "Reference",
"targetProfile": "http://hl7.org/fhir/StructureDefinition/Organization"
}
],
"isSummary": true,
"mapping": [
{
"identity": "w5",
"map": "FiveWs.author"
},
{
"identity": "w5",
"map": "who.author"
}
]
},
{
"id": "Linkage.item",
"path": "Linkage.item",
"short": "Item to be linked",
"definition": "Identifies one of the records that is considered to refer to the same real-world occurrence as well as how the items hould be evaluated within the collection of linked items.",
"min": 1,
"max": "*",
"type": [
{
"code": "BackboneElement"
}
],
"condition": [
"lnk-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": "Element"
}
],
"isSummary": true
},
{
"id": "Linkage.item.id",
"path": "Linkage.item.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": "Linkage.item.extension",
"path": "Linkage.item.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 element. In order 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 is allowed to 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"
}
],
"mapping": [
{
"identity": "rim",
"map": "n/a"
}
]
},
{
"id": "Linkage.item.modifierExtension",
"path": "Linkage.item.modifierExtension",
"short": "Extensions that cannot be ignored",
"definition": "May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order 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 is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.",
"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",
"modifiers"
],
"min": 0,
"max": "*",
"base": {
"path": "BackboneElement.modifierExtension",
"min": 0,
"max": "*"
},
"type": [
{
"code": "Extension"
}
],
"isModifier": true,
"isSummary": true,
"mapping": [
{
"identity": "rim",
"map": "N/A"
}
]
},
{
"id": "Linkage.item.type",
"path": "Linkage.item.type",
"short": "source | alternate | historical",
"definition": "Distinguishes which item is \"source of truth\" (if any) and which items are no longer considered to be current representations.",
"min": 1,
"max": "1",
"type": [
{
"code": "code"
}
],
"isSummary": true,
"binding": {
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
"valueString": "LinkageType"
}
],
"strength": "required",
"description": "Used to distinguish different roles a resource can play within a set of linked resources",
"valueSetReference": {
"reference": "http://hl7.org/fhir/ValueSet/linkage-type"
}
}
},
{
"id": "Linkage.item.resource",
"path": "Linkage.item.resource",
"short": "Resource being linked",
"definition": "The resource instance being linked as part of the group.",
"min": 1,
"max": "1",
"type": [
{
"code": "Reference",
"targetProfile": "http://hl7.org/fhir/StructureDefinition/Resource"
}
],
"isSummary": true
}
]
},
"differential": {
"element": [
{
"id": "Linkage",
"path": "Linkage",
"short": "Links records for 'same' item",
"definition": "Identifies two or more records (resource instances) that are referring to the same real-world \"occurrence\".",
"min": 0,
"max": "*",
"constraint": [
{
"key": "lnk-1",
"severity": "error",
"human": "Must have at least two items",
"expression": "item.count()>1",
"xpath": "count(f:item)>1"
}
],
"mapping": [
{
"identity": "rim",
"map": "N/A - RIM doesn't know how to do this"
},
{
"identity": "w5",
"map": "infrastructure.structure"
}
]
},
{
"id": "Linkage.active",
"path": "Linkage.active",
"short": "Whether this linkage assertion is active or not",
"definition": "Indicates whether the asserted set of linkages are considered to be \"in effect\".",
"comment": "If false, any asserted linkages should not be considered current/relevant/applicable.",
"requirements": "Need to be able to mark a linkage record as not to be used because it was created in error.",
"min": 0,
"max": "1",
"type": [
{
"code": "boolean"
}
],
"defaultValueBoolean": true,
"isSummary": true,
"mapping": [
{
"identity": "w5",
"map": "FiveWs.status"
},
{
"identity": "w5",
"map": "status"
}
]
},
{
"id": "Linkage.author",
"path": "Linkage.author",
"short": "Who is responsible for linkages",
"definition": "Identifies the user or organization responsible for asserting the linkages and who establishes the context for evaluating the nature of each linkage.",
"requirements": "\"Primary\" for the same set of linked resources may be different from different user's/organization's perspectives.",
"min": 0,
"max": "1",
"type": [
{
"code": "Reference",
"targetProfile": "http://hl7.org/fhir/StructureDefinition/Practitioner"
},
{
"code": "Reference",
"targetProfile": "http://hl7.org/fhir/StructureDefinition/Organization"
}
],
"isSummary": true,
"mapping": [
{
"identity": "w5",
"map": "FiveWs.author"
},
{
"identity": "w5",
"map": "who.author"
}
]
},
{
"id": "Linkage.item",
"path": "Linkage.item",
"short": "Item to be linked",
"definition": "Identifies one of the records that is considered to refer to the same real-world occurrence as well as how the items hould be evaluated within the collection of linked items.",
"min": 1,
"max": "*",
"type": [
{
"code": "BackboneElement"
}
],
"condition": [
"lnk-1"
],
"isSummary": true
},
{
"id": "Linkage.item.type",
"path": "Linkage.item.type",
"short": "source | alternate | historical",
"definition": "Distinguishes which item is \"source of truth\" (if any) and which items are no longer considered to be current representations.",
"min": 1,
"max": "1",
"type": [
{
"code": "code"
}
],
"isSummary": true,
"binding": {
"extension": [
{
"url": "http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName",
"valueString": "LinkageType"
}
],
"strength": "required",
"description": "Used to distinguish different roles a resource can play within a set of linked resources",
"valueSetReference": {
"reference": "http://hl7.org/fhir/ValueSet/linkage-type"
}
}
},
{
"id": "Linkage.item.resource",
"path": "Linkage.item.resource",
"short": "Resource being linked",
"definition": "The resource instance being linked as part of the group.",
"min": 1,
"max": "1",
"type": [
{
"code": "Reference",
"targetProfile": "http://hl7.org/fhir/StructureDefinition/Resource"
}
],
"isSummary": true
}
]
}
}
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.
®© HL7.org 2011+. FHIR Release 4 Draft for Comment (Jan-2018 v3.2.0-12885) generated on Wed, Dec 20, 2017 15:57+1100. QA Page
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