{"abstract":false,"baseDefinition":"http://hl7.org/fhir/StructureDefinition/DomainResource","contact":[{"telecom":[{"system":"other","value":"http://hl7.org/fhir"}]},{"telecom":[{"system":"other","value":"http://www.hl7.org/Special/committees/fiwg/index.cfm"}]}],"date":"2016-08-11T17:02:54+10:00","derivation":"specialization","description":"Base StructureDefinition for StructureDefinition Resource","differential":{"element":[{"alias":["Template","Profile"],"constraint":[{"expression":"snapshot.element.id.trace('ids').isDistinct()","human":"All element definitions must have unique ids (snapshot)","key":"sdf-16","requirements":"element ids need to be unique","severity":"error","xpath":"count(*/f:element)=count(*/f:element/@id)"},{"expression":"children().element.first().label.empty() and children().element.first().code.empty() and children().element.first().requirements.empty()","human":"In any snapshot or differential, no label, code or requirements on the an element without a \".\" in the path (e.g. the first element)","key":"sdf-9","requirements":"Because these 3 fields seem to be have overlapping meaning with the ones in the root of StructureDefinition","severity":"error","xpath":"not(exists(f:snapshot/f:element[not(contains(f:path/@value, '.')) and (f:label or f:code or f:requirements)])) and not(exists(f:differential/f:element[not(contains(f:path/@value, '.')) and (f:label or f:code or f:requirements)]))"},{"expression":"differential.element.id.trace('ids').isDistinct()","human":"All element definitions must have unique ids (diff)","key":"sdf-17","requirements":"element ids need to be unique","severity":"error","xpath":"count(*/f:element)=count(*/f:element/@id)"},{"expression":"snapshot.exists() implies (snapshot.element.base.exists() = baseDefinition.exists())","human":"element.base cannot appear if there is no base on the structure definition","key":"sdf-12","requirements":"Ensure that element.base appears with base or not","severity":"error","xpath":"f:baseDefinition or not(exists(f:snapshot/f:element/f:base) or exists(f:differential/f:element/f:base))"},{"expression":"snapshot.empty() or snapshot.element.first().path = type","human":"If there's a type, its content must match the path name in the first element of a snapshot","key":"sdf-11","requirements":"Ensure that the type is not inconsistent with the other information in the structure","severity":"error","xpath":"not(exists(f:snapshot)) or (f:type/@value = f:snapshot/f:element[1]/f:path/@value)"},{"expression":"snapshot.element.all(id.exists()) and differential.element.all(id.exists())","human":"All element definitions must have an id","key":"sdf-14","requirements":"elements have id","severity":"error","xpath":"count(*/f:element)=count(*/f:element/@id)"},{"expression":"derivation = 'constraint' or snapshot.element.select(path).distinct()","human":"Element paths must be unique unless the structure is a constraint","key":"sdf-1","severity":"error","xpath":"(f:derivation/@value = 'constraint') or (count(f:snapshot/f:element) = count(distinct-values(f:snapshot/f:element/f:path/@value)))"},{"expression":"(derivation = 'constraint') or (url = 'http://hl7.org/fhir/StructureDefinition/'+id)","human":"If the structure describes a base Resource or Type, the URL has to start with \"http://hl7.org/fhir/StructureDefinition/\" and the tail must match the id","key":"sdf-7","severity":"error","xpath":"(f:derivation/@value = 'constraint') or f:url/@value=concat('http://hl7.org/fhir/StructureDefinition/', f:id/@value)"},{"expression":"snapshot.exists() or differential.exists()","human":"A structure must have either a differential, or a snapshot (or both)","key":"sdf-6","severity":"error","xpath":"exists(f:snapshot) or exists(f:differential)"},{"expression":"type != 'Extension' or derivation = 'specialization' or (context.exists() and contextType.exists())","human":"If the structure defines an extension then the structure must have context information","key":"sdf-5","severity":"error","xpath":"not(f:type/@value = 'extension') or (f:derivation/@value = 'specialization') or (exists(f:context) and exists(f:contextType))"},{"expression":"abstract = true or baseDefinition.exists()","human":"If the structure is not abstract, then there SHALL be a baseDefinition","key":"sdf-4","requirements":"Ensure that the base types are abstract","severity":"error","xpath":"(f:abstract/@value=true()) or exists(f:baseDefinition)"}],"definition":"A definition of a FHIR structure. This resource is used to describe the underlying resources, data types defined in FHIR, and also for describing extensions, and constraints on resources and data types.","id":"StructureDefinition","mapping":[{"identity":"rim","map":"n/a"},{"identity":"objimpl","map":"BaseConformance"},{"identity":"w5","map":"conformance.content"}],"max":"1","min":1,"path":"StructureDefinition","short":"Structural Definition"},{"alias":["url","authoritative-url","destination","identity"],"definition":"An absolute URL that is used to identify this structure definition when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this structure definition is (or will be) published.","id":"StructureDefinition.url","isSummary":true,"mapping":[{"identity":"objimpl","map":"BaseConformance.url"},{"identity":"w5","map":"id"}],"max":"1","min":1,"path":"StructureDefinition.url","requirements":"So you can say, in a StructureDefinition, what the full extension URLs should be. This is required to allow hosting StructureDefinitions on multiple different servers, and to allow for the editorial process.","short":"Absolute URL used to reference this StructureDefinition","type":[{"code":"uri"}]},{"definition":"Formal identifier that is used to identify this StructureDefinition when it is represented in other formats, or referenced in a specification, model, design or an instance (should be globally unique OID, UUID, or URI), (if it's not possible to use the literal URI).","id":"StructureDefinition.identifier","isSummary":true,"mapping":[{"identity":"iso11179","map":"Identifier part"},{"identity":"w5","map":"id"}],"max":"*","min":0,"path":"StructureDefinition.identifier","short":"Other identifiers for the StructureDefinition","type":[{"code":"Identifier"}]},{"definition":"The identifier that is used to identify this version of the StructureDefinition when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the StructureDefinition author manually.","id":"StructureDefinition.version","isSummary":true,"mapping":[{"identity":"iso11179","map":"Version"},{"identity":"objimpl","map":"BaseConformance.version"},{"identity":"w5","map":"id.version"}],"max":"1","min":0,"path":"StructureDefinition.version","requirements":"There may be multiple resource versions of the StructureDefinition that have this same identifier. The resource version id will change for technical reasons, whereas the stated version number needs to be under the author's control.","short":"Logical id for this version of the StructureDefinition","type":[{"code":"string"}]},{"comments":"Not expected to be globally unique.","definition":"A free text natural language name identifying the StructureDefinition.","id":"StructureDefinition.name","isSummary":true,"mapping":[{"identity":"objimpl","map":"BaseConformance.name"}],"max":"1","min":1,"path":"StructureDefinition.name","short":"Informal name for this StructureDefinition","type":[{"code":"string"}]},{"comments":"Applications don't have to use this name, but can always fall back to it. In the absence of a value for this element, use the name.","definition":"Defined so that applications can use this name when displaying the value of the extension to the user.","id":"StructureDefinition.display","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.display","short":"Use this name when displaying the value","type":[{"code":"string"}]},{"binding":{"description":"The lifecycle status of a Value Set or Concept Map.","strength":"required","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/conformance-resource-status"}},"definition":"The status of the StructureDefinition.","id":"StructureDefinition.status","isModifier":true,"isSummary":true,"mapping":[{"identity":"iso11179","map":"Registration status"},{"identity":"objimpl","map":"BaseConformance.status"},{"identity":"w5","map":"status"}],"max":"1","min":1,"path":"StructureDefinition.status","requirements":"Allows filtering of StructureDefinitions that are appropriate for use vs. not.","short":"draft | active | retired","type":[{"code":"code"}]},{"definition":"This StructureDefinition was authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.","id":"StructureDefinition.experimental","isSummary":true,"mapping":[{"identity":"iso11179","map":"Registration status"},{"identity":"w5","map":"class"}],"max":"1","min":0,"path":"StructureDefinition.experimental","requirements":"Allows filtering of StructureDefinitions that are appropriate for use vs. not.","short":"If for testing purposes, not real usage","type":[{"code":"boolean"}]},{"comments":"Usually an organization, but may be an individual. This item SHOULD be populated unless the information is available from context.","definition":"The name of the individual or organization that published the structure definition.","id":"StructureDefinition.publisher","isSummary":true,"mapping":[{"identity":"iso11179","map":"Registration Authority"},{"identity":"w5","map":"who.witness"}],"max":"1","min":0,"path":"StructureDefinition.publisher","requirements":"Helps establish the \"authority/credibility\" of the structure definition. May also allow for contact.","short":"Name of the publisher (Organization or individual)","type":[{"code":"string"}]},{"comments":"May be a web site, an email address, a telephone number (tel:), etc.","definition":"Contacts to assist a user in finding and communicating with the publisher.","id":"StructureDefinition.contact","isSummary":true,"max":"*","min":0,"path":"StructureDefinition.contact","short":"Contact details of the publisher","type":[{"code":"BackboneElement"}]},{"comments":"If there is no named individual, the telecom is for the organization as a whole.","definition":"The name of an individual to contact regarding the structure definition.","id":"StructureDefinition.contact.name","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.contact.name","short":"Name of an individual to contact","type":[{"code":"string"}]},{"definition":"Contact details for individual (if a name was provided) or the publisher.","id":"StructureDefinition.contact.telecom","isSummary":true,"max":"*","min":0,"path":"StructureDefinition.contact.telecom","short":"Contact details for individual or publisher","type":[{"code":"ContactPoint"}]},{"comments":"Additional specific dates may be added as extensions.","definition":"The date this version of the structure definition was published. The date must change when the business version changes, if it does, and it must change if the status code changes. In addition, it should change when the substantive content of the structure definition changes.","id":"StructureDefinition.date","isSummary":true,"mapping":[{"identity":"objimpl","map":"BaseConformance.date"},{"identity":"w5","map":"when.recorded"}],"max":"1","min":0,"path":"StructureDefinition.date","short":"Date for this version of the StructureDefinition","type":[{"code":"dateTime"}]},{"comments":"This field can be used for things such as why the StructureDefinition was written, comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is *not* a rendering of the StructureDefinition as conveyed in StructureDefinition.text. This item SHOULD be populated unless the information is available from context.","definition":"A free text natural language description of the StructureDefinition and its use.","id":"StructureDefinition.description","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.description","short":"Natural language description of the StructureDefinition","type":[{"code":"markdown"}]},{"binding":{"description":"Indicates the countries, regions, disciplines and other aspects of use within which this artifact is targeted for use.","strength":"extensible","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/use-context"}},"definition":"The content was developed with a focus and intent of supporting the contexts that are listed. These terms may be used to assist with indexing and searching of structure definitions.","id":"StructureDefinition.useContext","isSummary":true,"mapping":[{"identity":"iso11179","map":"COMPONENT, PROPERTY, TIME_ASPCT, SYSTEM, SCALE_TYP, METHOD_TYP, CLASS, CLASSTYPE, ORDER_OBS, DOCUMENT_SECTION, HL7_ATTACHMENT_STRUCTURE"},{"identity":"objimpl","map":"BaseConformance.useContext"}],"max":"*","min":0,"path":"StructureDefinition.useContext","requirements":"Assist in searching for appropriate content.","short":"Content intends to support these contexts","type":[{"code":"CodeableConcept"}]},{"comments":"This element does not describe the usage of the structure definition (that's done in comments), rather it's for traceability of *why* the element is either needed or why the constraints exist as they do. This may be used to point to source materials or specifications that drove the structure of this data element.","definition":"Explains why this structure definition is needed and why it's been constrained as it has.","id":"StructureDefinition.requirements","mapping":[{"identity":"w5","map":"why"}],"max":"1","min":0,"path":"StructureDefinition.requirements","short":"Scope and Usage this structure definition is for","type":[{"code":"markdown"}]},{"alias":["License","Restrictions"],"definition":"A copyright statement relating to the structure definition and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the details of the constraints and mappings.","id":"StructureDefinition.copyright","max":"1","min":0,"path":"StructureDefinition.copyright","short":"Use and/or publishing restrictions","type":[{"code":"string"}]},{"binding":{"description":"Codes for the meaning of the defined structure (SNOMED CT and LOINC codes, as an example).","strength":"example","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/profile-code"}},"definition":"A set of terms from external terminologies that may be used to assist with indexing and searching of templates.","id":"StructureDefinition.code","isSummary":true,"mapping":[{"identity":"iso11179","map":"keywords"}],"max":"*","min":0,"path":"StructureDefinition.code","requirements":"Assist in searching for appropriate StructureDefinitions.","short":"Assist with indexing and finding","type":[{"code":"Coding"}]},{"comments":"A StructureDefinition does not need to specify the target it applies to,as StructureDefinitions will often be valid across multiple versions of FHIR. FHIR tooling can determine whether a StructureDefinition is consistent with a particular StructureDefinition if desired.","definition":"The version of the FHIR specification on which this StructureDefinition is based - this is the formal version of the specification, without the revision number, e.g. [publication].[major].[minor], which is 1.6.0 for this version.","id":"StructureDefinition.fhirVersion","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.fhirVersion","short":"FHIR Version this StructureDefinition targets","type":[{"code":"id"}]},{"constraint":[{"expression":"name.exists() or uri.exists()","human":"Must have at a name or a uri (or both)","key":"sdf-2","severity":"error","xpath":"exists(f:uri) or exists(f:name)"}],"definition":"An external specification that the content is mapped to.","id":"StructureDefinition.mapping","max":"*","min":0,"path":"StructureDefinition.mapping","short":"External specification that the content is mapped to","type":[{"code":"BackboneElement"}]},{"comments":"The specification is described once, with general comments, and then specific mappings are made that reference this declaration.","definition":"An Internal id that is used to identify this mapping set when specific mappings are made.","id":"StructureDefinition.mapping.identity","max":"1","min":1,"path":"StructureDefinition.mapping.identity","short":"Internal id when this mapping is used","type":[{"code":"id"}]},{"comments":"A formal identity for the specification being mapped to helps with identifying maps consistently.","condition":["sdf-2"],"definition":"An absolute URI that identifies the specification that this mapping is expressed to.","id":"StructureDefinition.mapping.uri","max":"1","min":0,"path":"StructureDefinition.mapping.uri","short":"Identifies what this mapping refers to","type":[{"code":"uri"}]},{"condition":["sdf-2"],"definition":"A name for the specification that is being mapped to.","id":"StructureDefinition.mapping.name","max":"1","min":0,"path":"StructureDefinition.mapping.name","short":"Names what this mapping refers to","type":[{"code":"string"}]},{"definition":"Comments about this mapping, including version notes, issues, scope limitations, and other important notes for usage.","id":"StructureDefinition.mapping.comments","max":"1","min":0,"path":"StructureDefinition.mapping.comments","short":"Versions, Issues, Scope limitations etc.","type":[{"code":"string"}]},{"binding":{"description":"Defines the type of structure that a definition is describing.","strength":"required","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/structure-definition-kind"}},"definition":"Defines the kind of structure that this definition is describing.","id":"StructureDefinition.kind","isSummary":true,"max":"1","min":1,"path":"StructureDefinition.kind","short":"primitive-type | complex-type | resource | logical","type":[{"code":"code"}]},{"comments":"Abstract Resources cannot be instantiated - a concrete sub-type must be used. Abstract datatypes and extensions cannot be used in an instance. Flagging a constraint structure as abstract conveys design intent but makes no difference to how the structure definition is handled. Note that inline declared elements that are given the type \"Element\" in the profile, but have children described, are anonymous concrete types that specialise Element. Abstract is not relevant for logical models.","definition":"Whether structure this definition describes is abstract or not - that is, whether an actual exchanged item can ever be of this type.","id":"StructureDefinition.abstract","isSummary":true,"max":"1","min":1,"path":"StructureDefinition.abstract","short":"Whether the structure is abstract","type":[{"code":"boolean"}]},{"binding":{"description":"How an extension context is interpreted.","strength":"required","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/extension-context"}},"condition":["sdf-5"],"definition":"If this is an extension, Identifies the context within FHIR resources where the extension can be used.","id":"StructureDefinition.contextType","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.contextType","short":"resource | datatype | extension","type":[{"code":"code"}]},{"comments":"If the context is an element that can have multiple types, then use (e.g.) value[x] if the extension works on all choice types, or otherwise an enumeration of explicitly named elements if not. Note that a context of \"string\" doesn't mean that the extension can be used with one of the string patterns such as \"id\" etc.","condition":["sdf-5"],"definition":"Identifies the types of resource or data type elements to which the extension can be applied.","id":"StructureDefinition.context","isSummary":true,"max":"*","min":0,"path":"StructureDefinition.context","short":"Where the extension can be used in instances","type":[{"code":"string"}]},{"binding":{"description":"Either a resource or a data type, including logical model types","strength":"extensible","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/defined-types"}},"comments":"Note that in the case of constraints, the type could be determined by chasing through the baseDefinition references until a concrete structure (derivation = specialization) is reached, or by looking at the path of the first element in the snapshot - if present - but providing the type directly makes for simpler tooling and indexing.","condition":["sdf-4","sdf-11"],"definition":"The type this structure is describes. If the derivation kind is 'specialization' then this is the master definition for a type, and there is always one of these (a data type, an extension, a resource, including abstract ones). Otherwise the structure definition is a constraint on the stated type (and in this case, the type cannot be an abstract type).","id":"StructureDefinition.type","isSummary":true,"max":"1","min":1,"path":"StructureDefinition.type","short":"Type defined or constrained by this structure","type":[{"code":"code"}]},{"comments":"If differential constraints are specified in this structure, they are applied to the base in a \"differential\" fashion. If there is no base, then the differential constraints cannot be provided (snapshot only). Differential structures are useful for the editing perspective, and snapshot structures are suitable for operational use. The FHIR Project provides a number of tools/services to populate snapshots from differential constraints. Logical Models have a base of \"Element\" or another logical model.","condition":["sdf-4"],"definition":"An absolute URI that is the base structure from which this type is derived, either by specialization or constraint.","id":"StructureDefinition.baseDefinition","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.baseDefinition","short":"Definition that this type is constrained/specialized from","type":[{"code":"uri"}]},{"binding":{"description":"How a type relates to it's baseDefinition.","strength":"required","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/type-derivation-rule"}},"comments":"If the definition is a specialization, then it adds new elements in the differential, and the snapshot includes the inherited elements.\n\nIf the definition is a constraint, then it can not define new elements, it can only make new rules about existing content (see [Profiling Resources](profiling.html#resources)).","condition":["sdf-12"],"definition":"How the type relates to the baseDefinition.","id":"StructureDefinition.derivation","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.derivation","short":"specialization | constraint - How relates to base definition","type":[{"code":"code"}]},{"condition":["sdf-6"],"constraint":[{"expression":"element.first().type.empty()","human":"The first element in a snapshot has no type","key":"sdf-15","requirements":"No Type on the root element (snapshot)","severity":"error","xpath":"not(f:element[1]/f:type)"},{"expression":"element.first().path = %resource.type and element.tail().all(path.startsWith(%resource.type&'.'))","human":"In any snapshot, all the elements must be in the specified type","key":"sdf-8","severity":"error","xpath":"f:element[1]/f:path/@value=parent::f:StructureDefinition/f:type/@value and count(f:element[position()!=1])=count(f:element[position()!=1][starts-with(f:path/@value, concat(ancestor::f:StructureDefinition/f:type/@value, '.'))])"},{"expression":"element.all(definition and min and max)","human":"Each element definition in a snapshot must have a formal definition and cardinalities","key":"sdf-3","severity":"error","xpath":"count(f:element) = count(f:element[exists(f:definition) and exists(f:min) and exists(f:max)])"}],"definition":"A snapshot view is expressed in a stand alone form that can be used and interpreted without considering the base StructureDefinition.","id":"StructureDefinition.snapshot","max":"1","min":0,"path":"StructureDefinition.snapshot","short":"Snapshot view of the structure","type":[{"code":"BackboneElement"}]},{"condition":["sdf-3"],"definition":"Captures constraints on each element within the resource.","id":"StructureDefinition.snapshot.element","mapping":[{"identity":"iso11179","map":"--"}],"max":"*","min":1,"path":"StructureDefinition.snapshot.element","short":"Definition of elements in the resource (if no StructureDefinition)","type":[{"code":"ElementDefinition"}]},{"condition":["sdf-6"],"constraint":[{"expression":"element.first().path.contains('.').not() implies element.first().type.empty()","human":"If the first element in a differential has no \".\" in the path, it has no type","key":"sdf-15a","requirements":"No Type on the root element (differential)","severity":"error","xpath":"not(f:element[1][not(contains(f:path/@value, '.'))]/f:type)"},{"expression":"element.first().path.startsWith(%resource.type) and element.tail().all(path.startsWith(%resource.type&'.'))","human":"In any differential, all the elements must be in the specified type","key":"sdf-8a","severity":"error","xpath":"count(f:element)=count(f:element[f:path/@value=ancestor::f:StructureDefinition/f:type/@value or starts-with(f:path/@value, concat(ancestor::f:StructureDefinition/f:type/@value, '.'))])"}],"definition":"A differential view is expressed relative to the base StructureDefinition - a statement of differences that it applies.","id":"StructureDefinition.differential","max":"1","min":0,"path":"StructureDefinition.differential","short":"Differential view of the structure","type":[{"code":"BackboneElement"}]},{"definition":"Captures constraints on each element within the resource.","id":"StructureDefinition.differential.element","mapping":[{"identity":"iso11179","map":"--"}],"max":"*","min":1,"path":"StructureDefinition.differential.element","short":"Definition of elements in the resource (if no StructureDefinition)","type":[{"code":"ElementDefinition"}]}]},"extension":[{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm","valueInteger":2}],"fhirVersion":"1.6.0","id":"StructureDefinition","kind":"resource","mapping":[{"identity":"rim","name":"RIM Mapping","uri":"http://hl7.org/v3"},{"identity":"objimpl","name":"Object Implementation Information","uri":"http://hl7.org/fhir/object-implementation"},{"identity":"w5","name":"W5 Mapping","uri":"http://hl7.org/fhir/w5"},{"identity":"iso11179","name":"ISO 11179","uri":"http://metadata-standards.org/11179/"}],"meta":{"lastUpdated":"2016-08-11T17:02:54.322+10:00"},"name":"StructureDefinition","publisher":"Health Level Seven International (FHIR Infrastructure)","resourceType":"StructureDefinition","snapshot":{"element":[{"alias":["Template","Profile"],"constraint":[{"expression":"contained.contained.empty()","human":"If the resource is contained in another resource, it SHALL NOT contain nested Resources","key":"dom-2","severity":"error","xpath":"not(parent::f:contained and f:contained)"},{"expression":"contained.text.empty()","human":"If the resource is contained in another resource, it SHALL NOT contain any narrative","key":"dom-1","severity":"error","xpath":"not(parent::f:contained and f:text)"},{"expression":"contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()","human":"If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated","key":"dom-4","severity":"error","xpath":"not(exists(f:contained/*/f:meta/f:versionId)) and not(exists(f:contained/*/f:meta/f:lastUpdated))"},{"expression":"contained.where(('#'+id in %resource.descendants().reference).not()).empty()","human":"If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource","key":"dom-3","severity":"error","xpath":"not(exists(for $id in f:contained/*/@id return $id[not(ancestor::f:contained/parent::*/descendant::f:reference/@value=concat('#', $id))]))"},{"expression":"snapshot.element.id.trace('ids').isDistinct()","human":"All element definitions must have unique ids (snapshot)","key":"sdf-16","requirements":"element ids need to be unique","severity":"error","xpath":"count(*/f:element)=count(*/f:element/@id)"},{"expression":"children().element.first().label.empty() and children().element.first().code.empty() and children().element.first().requirements.empty()","human":"In any snapshot or differential, no label, code or requirements on the an element without a \".\" in the path (e.g. the first element)","key":"sdf-9","requirements":"Because these 3 fields seem to be have overlapping meaning with the ones in the root of StructureDefinition","severity":"error","xpath":"not(exists(f:snapshot/f:element[not(contains(f:path/@value, '.')) and (f:label or f:code or f:requirements)])) and not(exists(f:differential/f:element[not(contains(f:path/@value, '.')) and (f:label or f:code or f:requirements)]))"},{"expression":"differential.element.id.trace('ids').isDistinct()","human":"All element definitions must have unique ids (diff)","key":"sdf-17","requirements":"element ids need to be unique","severity":"error","xpath":"count(*/f:element)=count(*/f:element/@id)"},{"expression":"snapshot.exists() implies (snapshot.element.base.exists() = baseDefinition.exists())","human":"element.base cannot appear if there is no base on the structure definition","key":"sdf-12","requirements":"Ensure that element.base appears with base or not","severity":"error","xpath":"f:baseDefinition or not(exists(f:snapshot/f:element/f:base) or exists(f:differential/f:element/f:base))"},{"expression":"snapshot.empty() or snapshot.element.first().path = type","human":"If there's a type, its content must match the path name in the first element of a snapshot","key":"sdf-11","requirements":"Ensure that the type is not inconsistent with the other information in the structure","severity":"error","xpath":"not(exists(f:snapshot)) or (f:type/@value = f:snapshot/f:element[1]/f:path/@value)"},{"expression":"snapshot.element.all(id.exists()) and differential.element.all(id.exists())","human":"All element definitions must have an id","key":"sdf-14","requirements":"elements have id","severity":"error","xpath":"count(*/f:element)=count(*/f:element/@id)"},{"expression":"derivation = 'constraint' or snapshot.element.select(path).distinct()","human":"Element paths must be unique unless the structure is a constraint","key":"sdf-1","severity":"error","xpath":"(f:derivation/@value = 'constraint') or (count(f:snapshot/f:element) = count(distinct-values(f:snapshot/f:element/f:path/@value)))"},{"expression":"(derivation = 'constraint') or (url = 'http://hl7.org/fhir/StructureDefinition/'+id)","human":"If the structure describes a base Resource or Type, the URL has to start with \"http://hl7.org/fhir/StructureDefinition/\" and the tail must match the id","key":"sdf-7","severity":"error","xpath":"(f:derivation/@value = 'constraint') or f:url/@value=concat('http://hl7.org/fhir/StructureDefinition/', f:id/@value)"},{"expression":"snapshot.exists() or differential.exists()","human":"A structure must have either a differential, or a snapshot (or both)","key":"sdf-6","severity":"error","xpath":"exists(f:snapshot) or exists(f:differential)"},{"expression":"type != 'Extension' or derivation = 'specialization' or (context.exists() and contextType.exists())","human":"If the structure defines an extension then the structure must have context information","key":"sdf-5","severity":"error","xpath":"not(f:type/@value = 'extension') or (f:derivation/@value = 'specialization') or (exists(f:context) and exists(f:contextType))"},{"expression":"abstract = true or baseDefinition.exists()","human":"If the structure is not abstract, then there SHALL be a baseDefinition","key":"sdf-4","requirements":"Ensure that the base types are abstract","severity":"error","xpath":"(f:abstract/@value=true()) or exists(f:baseDefinition)"}],"definition":"A definition of a FHIR structure. This resource is used to describe the underlying resources, data types defined in FHIR, and also for describing extensions, and constraints on resources and data types.","id":"StructureDefinition","mapping":[{"identity":"rim","map":"Entity. Role, or Act"},{"identity":"rim","map":"n/a"},{"identity":"objimpl","map":"BaseConformance"},{"identity":"w5","map":"conformance.content"}],"max":"1","min":1,"path":"StructureDefinition","short":"Structural Definition"},{"base":{"max":"*","min":0,"path":"Resource.id"},"comments":"The only time that a resource does not have an id is when it is being submitted to the server using a create operation.","definition":"The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.","id":"StructureDefinition.id","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.id","short":"Logical id of this artifact","type":[{"code":"id"}]},{"base":{"max":"*","min":0,"path":"Resource.meta"},"definition":"The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content may not always be associated with version changes to the resource.","id":"StructureDefinition.meta","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.meta","short":"Metadata about the resource","type":[{"code":"Meta"}]},{"base":{"max":"*","min":0,"path":"Resource.implicitRules"},"comments":"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 as much as possible.","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.","id":"StructureDefinition.implicitRules","isModifier":true,"isSummary":true,"max":"1","min":0,"path":"StructureDefinition.implicitRules","short":"A set of rules under which this content was created","type":[{"code":"uri"}]},{"base":{"max":"*","min":0,"path":"Resource.language"},"binding":{"description":"A human language.","extension":[{"url":"http://hl7.org/fhir/StructureDefinition/elementdefinition-maxValueSet","valueReference":{"reference":"http://hl7.org/fhir/ValueSet/all-languages"}}],"strength":"extensible","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/languages"}},"comments":"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).","definition":"The base language in which the resource is written.","id":"StructureDefinition.language","max":"1","min":0,"path":"StructureDefinition.language","short":"Language of the resource content","type":[{"code":"code"}]},{"alias":["narrative","html","xhtml","display"],"base":{"max":"*","min":0,"path":"DomainResource.text"},"comments":"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.","condition":["dom-1"],"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.","id":"StructureDefinition.text","mapping":[{"identity":"rim","map":"Act.text?"}],"max":"1","min":0,"path":"StructureDefinition.text","short":"Text summary of the resource, for human interpretation","type":[{"code":"Narrative"}]},{"alias":["inline resources","anonymous resources","contained resources"],"base":{"max":"*","min":0,"path":"DomainResource.contained"},"comments":"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.","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.","id":"StructureDefinition.contained","mapping":[{"identity":"rim","map":"N/A"}],"max":"*","min":0,"path":"StructureDefinition.contained","short":"Contained, inline Resources","type":[{"code":"Resource"}]},{"alias":["extensions","user content"],"base":{"max":"*","min":0,"path":"DomainResource.extension"},"comments":"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.","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.","id":"StructureDefinition.extension","mapping":[{"identity":"rim","map":"N/A"}],"max":"*","min":0,"path":"StructureDefinition.extension","short":"Additional Content defined by implementations","type":[{"code":"Extension"}]},{"alias":["extensions","user content"],"base":{"max":"*","min":0,"path":"DomainResource.modifierExtension"},"comments":"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.","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.","id":"StructureDefinition.modifierExtension","isModifier":true,"mapping":[{"identity":"rim","map":"N/A"}],"max":"*","min":0,"path":"StructureDefinition.modifierExtension","short":"Extensions that cannot be ignored","type":[{"code":"Extension"}]},{"alias":["url","authoritative-url","destination","identity"],"definition":"An absolute URL that is used to identify this structure definition when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this structure definition is (or will be) published.","id":"StructureDefinition.url","isSummary":true,"mapping":[{"identity":"objimpl","map":"BaseConformance.url"},{"identity":"w5","map":"id"}],"max":"1","min":1,"path":"StructureDefinition.url","requirements":"So you can say, in a StructureDefinition, what the full extension URLs should be. This is required to allow hosting StructureDefinitions on multiple different servers, and to allow for the editorial process.","short":"Absolute URL used to reference this StructureDefinition","type":[{"code":"uri"}]},{"definition":"Formal identifier that is used to identify this StructureDefinition when it is represented in other formats, or referenced in a specification, model, design or an instance (should be globally unique OID, UUID, or URI), (if it's not possible to use the literal URI).","id":"StructureDefinition.identifier","isSummary":true,"mapping":[{"identity":"iso11179","map":"Identifier part"},{"identity":"w5","map":"id"}],"max":"*","min":0,"path":"StructureDefinition.identifier","short":"Other identifiers for the StructureDefinition","type":[{"code":"Identifier"}]},{"definition":"The identifier that is used to identify this version of the StructureDefinition when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the StructureDefinition author manually.","id":"StructureDefinition.version","isSummary":true,"mapping":[{"identity":"iso11179","map":"Version"},{"identity":"objimpl","map":"BaseConformance.version"},{"identity":"w5","map":"id.version"}],"max":"1","min":0,"path":"StructureDefinition.version","requirements":"There may be multiple resource versions of the StructureDefinition that have this same identifier. The resource version id will change for technical reasons, whereas the stated version number needs to be under the author's control.","short":"Logical id for this version of the StructureDefinition","type":[{"code":"string"}]},{"comments":"Not expected to be globally unique.","definition":"A free text natural language name identifying the StructureDefinition.","id":"StructureDefinition.name","isSummary":true,"mapping":[{"identity":"objimpl","map":"BaseConformance.name"}],"max":"1","min":1,"path":"StructureDefinition.name","short":"Informal name for this StructureDefinition","type":[{"code":"string"}]},{"comments":"Applications don't have to use this name, but can always fall back to it. In the absence of a value for this element, use the name.","definition":"Defined so that applications can use this name when displaying the value of the extension to the user.","id":"StructureDefinition.display","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.display","short":"Use this name when displaying the value","type":[{"code":"string"}]},{"binding":{"description":"The lifecycle status of a Value Set or Concept Map.","strength":"required","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/conformance-resource-status"}},"definition":"The status of the StructureDefinition.","id":"StructureDefinition.status","isModifier":true,"isSummary":true,"mapping":[{"identity":"iso11179","map":"Registration status"},{"identity":"objimpl","map":"BaseConformance.status"},{"identity":"w5","map":"status"}],"max":"1","min":1,"path":"StructureDefinition.status","requirements":"Allows filtering of StructureDefinitions that are appropriate for use vs. not.","short":"draft | active | retired","type":[{"code":"code"}]},{"definition":"This StructureDefinition was authored for testing purposes (or education/evaluation/marketing), and is not intended to be used for genuine usage.","id":"StructureDefinition.experimental","isSummary":true,"mapping":[{"identity":"iso11179","map":"Registration status"},{"identity":"w5","map":"class"}],"max":"1","min":0,"path":"StructureDefinition.experimental","requirements":"Allows filtering of StructureDefinitions that are appropriate for use vs. not.","short":"If for testing purposes, not real usage","type":[{"code":"boolean"}]},{"comments":"Usually an organization, but may be an individual. This item SHOULD be populated unless the information is available from context.","definition":"The name of the individual or organization that published the structure definition.","id":"StructureDefinition.publisher","isSummary":true,"mapping":[{"identity":"iso11179","map":"Registration Authority"},{"identity":"w5","map":"who.witness"}],"max":"1","min":0,"path":"StructureDefinition.publisher","requirements":"Helps establish the \"authority/credibility\" of the structure definition. May also allow for contact.","short":"Name of the publisher (Organization or individual)","type":[{"code":"string"}]},{"comments":"May be a web site, an email address, a telephone number (tel:), etc.","definition":"Contacts to assist a user in finding and communicating with the publisher.","id":"StructureDefinition.contact","isSummary":true,"max":"*","min":0,"path":"StructureDefinition.contact","short":"Contact details of the publisher","type":[{"code":"BackboneElement"}]},{"base":{"max":"*","min":0,"path":"Element.id"},"definition":"unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.","id":"StructureDefinition.contact.id","mapping":[{"identity":"rim","map":"n/a"}],"max":"1","min":0,"path":"StructureDefinition.contact.id","representation":["xmlAttr"],"short":"xml:id (or equivalent in JSON)","type":[{"code":"string"}]},{"alias":["extensions","user content"],"base":{"max":"*","min":0,"path":"Element.extension"},"comments":"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.","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.","id":"StructureDefinition.contact.extension","mapping":[{"identity":"rim","map":"n/a"}],"max":"*","min":0,"path":"StructureDefinition.contact.extension","short":"Additional Content defined by implementations","type":[{"code":"Extension"}]},{"alias":["extensions","user content","modifiers"],"base":{"max":"*","min":0,"path":"BackboneElement.modifierExtension"},"comments":"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.","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.","id":"StructureDefinition.contact.modifierExtension","isModifier":true,"isSummary":true,"mapping":[{"identity":"rim","map":"N/A"}],"max":"*","min":0,"path":"StructureDefinition.contact.modifierExtension","short":"Extensions that cannot be ignored","type":[{"code":"Extension"}]},{"comments":"If there is no named individual, the telecom is for the organization as a whole.","definition":"The name of an individual to contact regarding the structure definition.","id":"StructureDefinition.contact.name","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.contact.name","short":"Name of an individual to contact","type":[{"code":"string"}]},{"definition":"Contact details for individual (if a name was provided) or the publisher.","id":"StructureDefinition.contact.telecom","isSummary":true,"max":"*","min":0,"path":"StructureDefinition.contact.telecom","short":"Contact details for individual or publisher","type":[{"code":"ContactPoint"}]},{"comments":"Additional specific dates may be added as extensions.","definition":"The date this version of the structure definition was published. The date must change when the business version changes, if it does, and it must change if the status code changes. In addition, it should change when the substantive content of the structure definition changes.","id":"StructureDefinition.date","isSummary":true,"mapping":[{"identity":"objimpl","map":"BaseConformance.date"},{"identity":"w5","map":"when.recorded"}],"max":"1","min":0,"path":"StructureDefinition.date","short":"Date for this version of the StructureDefinition","type":[{"code":"dateTime"}]},{"comments":"This field can be used for things such as why the StructureDefinition was written, comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is *not* a rendering of the StructureDefinition as conveyed in StructureDefinition.text. This item SHOULD be populated unless the information is available from context.","definition":"A free text natural language description of the StructureDefinition and its use.","id":"StructureDefinition.description","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.description","short":"Natural language description of the StructureDefinition","type":[{"code":"markdown"}]},{"binding":{"description":"Indicates the countries, regions, disciplines and other aspects of use within which this artifact is targeted for use.","strength":"extensible","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/use-context"}},"definition":"The content was developed with a focus and intent of supporting the contexts that are listed. These terms may be used to assist with indexing and searching of structure definitions.","id":"StructureDefinition.useContext","isSummary":true,"mapping":[{"identity":"iso11179","map":"COMPONENT, PROPERTY, TIME_ASPCT, SYSTEM, SCALE_TYP, METHOD_TYP, CLASS, CLASSTYPE, ORDER_OBS, DOCUMENT_SECTION, HL7_ATTACHMENT_STRUCTURE"},{"identity":"objimpl","map":"BaseConformance.useContext"}],"max":"*","min":0,"path":"StructureDefinition.useContext","requirements":"Assist in searching for appropriate content.","short":"Content intends to support these contexts","type":[{"code":"CodeableConcept"}]},{"comments":"This element does not describe the usage of the structure definition (that's done in comments), rather it's for traceability of *why* the element is either needed or why the constraints exist as they do. This may be used to point to source materials or specifications that drove the structure of this data element.","definition":"Explains why this structure definition is needed and why it's been constrained as it has.","id":"StructureDefinition.requirements","mapping":[{"identity":"w5","map":"why"}],"max":"1","min":0,"path":"StructureDefinition.requirements","short":"Scope and Usage this structure definition is for","type":[{"code":"markdown"}]},{"alias":["License","Restrictions"],"definition":"A copyright statement relating to the structure definition and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the details of the constraints and mappings.","id":"StructureDefinition.copyright","max":"1","min":0,"path":"StructureDefinition.copyright","short":"Use and/or publishing restrictions","type":[{"code":"string"}]},{"binding":{"description":"Codes for the meaning of the defined structure (SNOMED CT and LOINC codes, as an example).","strength":"example","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/profile-code"}},"definition":"A set of terms from external terminologies that may be used to assist with indexing and searching of templates.","id":"StructureDefinition.code","isSummary":true,"mapping":[{"identity":"iso11179","map":"keywords"}],"max":"*","min":0,"path":"StructureDefinition.code","requirements":"Assist in searching for appropriate StructureDefinitions.","short":"Assist with indexing and finding","type":[{"code":"Coding"}]},{"comments":"A StructureDefinition does not need to specify the target it applies to,as StructureDefinitions will often be valid across multiple versions of FHIR. FHIR tooling can determine whether a StructureDefinition is consistent with a particular StructureDefinition if desired.","definition":"The version of the FHIR specification on which this StructureDefinition is based - this is the formal version of the specification, without the revision number, e.g. [publication].[major].[minor], which is 1.6.0 for this version.","id":"StructureDefinition.fhirVersion","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.fhirVersion","short":"FHIR Version this StructureDefinition targets","type":[{"code":"id"}]},{"constraint":[{"expression":"name.exists() or uri.exists()","human":"Must have at a name or a uri (or both)","key":"sdf-2","severity":"error","xpath":"exists(f:uri) or exists(f:name)"}],"definition":"An external specification that the content is mapped to.","id":"StructureDefinition.mapping","max":"*","min":0,"path":"StructureDefinition.mapping","short":"External specification that the content is mapped to","type":[{"code":"BackboneElement"}]},{"base":{"max":"*","min":0,"path":"Element.id"},"definition":"unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.","id":"StructureDefinition.mapping.id","mapping":[{"identity":"rim","map":"n/a"}],"max":"1","min":0,"path":"StructureDefinition.mapping.id","representation":["xmlAttr"],"short":"xml:id (or equivalent in JSON)","type":[{"code":"string"}]},{"alias":["extensions","user content"],"base":{"max":"*","min":0,"path":"Element.extension"},"comments":"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.","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.","id":"StructureDefinition.mapping.extension","mapping":[{"identity":"rim","map":"n/a"}],"max":"*","min":0,"path":"StructureDefinition.mapping.extension","short":"Additional Content defined by implementations","type":[{"code":"Extension"}]},{"alias":["extensions","user content","modifiers"],"base":{"max":"*","min":0,"path":"BackboneElement.modifierExtension"},"comments":"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.","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.","id":"StructureDefinition.mapping.modifierExtension","isModifier":true,"isSummary":true,"mapping":[{"identity":"rim","map":"N/A"}],"max":"*","min":0,"path":"StructureDefinition.mapping.modifierExtension","short":"Extensions that cannot be ignored","type":[{"code":"Extension"}]},{"comments":"The specification is described once, with general comments, and then specific mappings are made that reference this declaration.","definition":"An Internal id that is used to identify this mapping set when specific mappings are made.","id":"StructureDefinition.mapping.identity","max":"1","min":1,"path":"StructureDefinition.mapping.identity","short":"Internal id when this mapping is used","type":[{"code":"id"}]},{"comments":"A formal identity for the specification being mapped to helps with identifying maps consistently.","condition":["sdf-2"],"definition":"An absolute URI that identifies the specification that this mapping is expressed to.","id":"StructureDefinition.mapping.uri","max":"1","min":0,"path":"StructureDefinition.mapping.uri","short":"Identifies what this mapping refers to","type":[{"code":"uri"}]},{"condition":["sdf-2"],"definition":"A name for the specification that is being mapped to.","id":"StructureDefinition.mapping.name","max":"1","min":0,"path":"StructureDefinition.mapping.name","short":"Names what this mapping refers to","type":[{"code":"string"}]},{"definition":"Comments about this mapping, including version notes, issues, scope limitations, and other important notes for usage.","id":"StructureDefinition.mapping.comments","max":"1","min":0,"path":"StructureDefinition.mapping.comments","short":"Versions, Issues, Scope limitations etc.","type":[{"code":"string"}]},{"binding":{"description":"Defines the type of structure that a definition is describing.","strength":"required","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/structure-definition-kind"}},"definition":"Defines the kind of structure that this definition is describing.","id":"StructureDefinition.kind","isSummary":true,"max":"1","min":1,"path":"StructureDefinition.kind","short":"primitive-type | complex-type | resource | logical","type":[{"code":"code"}]},{"comments":"Abstract Resources cannot be instantiated - a concrete sub-type must be used. Abstract datatypes and extensions cannot be used in an instance. Flagging a constraint structure as abstract conveys design intent but makes no difference to how the structure definition is handled. Note that inline declared elements that are given the type \"Element\" in the profile, but have children described, are anonymous concrete types that specialise Element. Abstract is not relevant for logical models.","definition":"Whether structure this definition describes is abstract or not - that is, whether an actual exchanged item can ever be of this type.","id":"StructureDefinition.abstract","isSummary":true,"max":"1","min":1,"path":"StructureDefinition.abstract","short":"Whether the structure is abstract","type":[{"code":"boolean"}]},{"binding":{"description":"How an extension context is interpreted.","strength":"required","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/extension-context"}},"condition":["sdf-5"],"definition":"If this is an extension, Identifies the context within FHIR resources where the extension can be used.","id":"StructureDefinition.contextType","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.contextType","short":"resource | datatype | extension","type":[{"code":"code"}]},{"comments":"If the context is an element that can have multiple types, then use (e.g.) value[x] if the extension works on all choice types, or otherwise an enumeration of explicitly named elements if not. Note that a context of \"string\" doesn't mean that the extension can be used with one of the string patterns such as \"id\" etc.","condition":["sdf-5"],"definition":"Identifies the types of resource or data type elements to which the extension can be applied.","id":"StructureDefinition.context","isSummary":true,"max":"*","min":0,"path":"StructureDefinition.context","short":"Where the extension can be used in instances","type":[{"code":"string"}]},{"binding":{"description":"Either a resource or a data type, including logical model types","strength":"extensible","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/defined-types"}},"comments":"Note that in the case of constraints, the type could be determined by chasing through the baseDefinition references until a concrete structure (derivation = specialization) is reached, or by looking at the path of the first element in the snapshot - if present - but providing the type directly makes for simpler tooling and indexing.","condition":["sdf-4","sdf-11"],"definition":"The type this structure is describes. If the derivation kind is 'specialization' then this is the master definition for a type, and there is always one of these (a data type, an extension, a resource, including abstract ones). Otherwise the structure definition is a constraint on the stated type (and in this case, the type cannot be an abstract type).","id":"StructureDefinition.type","isSummary":true,"max":"1","min":1,"path":"StructureDefinition.type","short":"Type defined or constrained by this structure","type":[{"code":"code"}]},{"comments":"If differential constraints are specified in this structure, they are applied to the base in a \"differential\" fashion. If there is no base, then the differential constraints cannot be provided (snapshot only). Differential structures are useful for the editing perspective, and snapshot structures are suitable for operational use. The FHIR Project provides a number of tools/services to populate snapshots from differential constraints. Logical Models have a base of \"Element\" or another logical model.","condition":["sdf-4"],"definition":"An absolute URI that is the base structure from which this type is derived, either by specialization or constraint.","id":"StructureDefinition.baseDefinition","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.baseDefinition","short":"Definition that this type is constrained/specialized from","type":[{"code":"uri"}]},{"binding":{"description":"How a type relates to it's baseDefinition.","strength":"required","valueSetReference":{"reference":"http://hl7.org/fhir/ValueSet/type-derivation-rule"}},"comments":"If the definition is a specialization, then it adds new elements in the differential, and the snapshot includes the inherited elements.\n\nIf the definition is a constraint, then it can not define new elements, it can only make new rules about existing content (see [Profiling Resources](profiling.html#resources)).","condition":["sdf-12"],"definition":"How the type relates to the baseDefinition.","id":"StructureDefinition.derivation","isSummary":true,"max":"1","min":0,"path":"StructureDefinition.derivation","short":"specialization | constraint - How relates to base definition","type":[{"code":"code"}]},{"condition":["sdf-6"],"constraint":[{"expression":"element.first().type.empty()","human":"The first element in a snapshot has no type","key":"sdf-15","requirements":"No Type on the root element (snapshot)","severity":"error","xpath":"not(f:element[1]/f:type)"},{"expression":"element.first().path = %resource.type and element.tail().all(path.startsWith(%resource.type&'.'))","human":"In any snapshot, all the elements must be in the specified type","key":"sdf-8","severity":"error","xpath":"f:element[1]/f:path/@value=parent::f:StructureDefinition/f:type/@value and count(f:element[position()!=1])=count(f:element[position()!=1][starts-with(f:path/@value, concat(ancestor::f:StructureDefinition/f:type/@value, '.'))])"},{"expression":"element.all(definition and min and max)","human":"Each element definition in a snapshot must have a formal definition and cardinalities","key":"sdf-3","severity":"error","xpath":"count(f:element) = count(f:element[exists(f:definition) and exists(f:min) and exists(f:max)])"}],"definition":"A snapshot view is expressed in a stand alone form that can be used and interpreted without considering the base StructureDefinition.","id":"StructureDefinition.snapshot","max":"1","min":0,"path":"StructureDefinition.snapshot","short":"Snapshot view of the structure","type":[{"code":"BackboneElement"}]},{"base":{"max":"*","min":0,"path":"Element.id"},"definition":"unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.","id":"StructureDefinition.snapshot.id","mapping":[{"identity":"rim","map":"n/a"}],"max":"1","min":0,"path":"StructureDefinition.snapshot.id","representation":["xmlAttr"],"short":"xml:id (or equivalent in JSON)","type":[{"code":"string"}]},{"alias":["extensions","user content"],"base":{"max":"*","min":0,"path":"Element.extension"},"comments":"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.","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.","id":"StructureDefinition.snapshot.extension","mapping":[{"identity":"rim","map":"n/a"}],"max":"*","min":0,"path":"StructureDefinition.snapshot.extension","short":"Additional Content defined by implementations","type":[{"code":"Extension"}]},{"alias":["extensions","user content","modifiers"],"base":{"max":"*","min":0,"path":"BackboneElement.modifierExtension"},"comments":"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.","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.","id":"StructureDefinition.snapshot.modifierExtension","isModifier":true,"isSummary":true,"mapping":[{"identity":"rim","map":"N/A"}],"max":"*","min":0,"path":"StructureDefinition.snapshot.modifierExtension","short":"Extensions that cannot be ignored","type":[{"code":"Extension"}]},{"condition":["sdf-3"],"definition":"Captures constraints on each element within the resource.","id":"StructureDefinition.snapshot.element","mapping":[{"identity":"iso11179","map":"--"}],"max":"*","min":1,"path":"StructureDefinition.snapshot.element","short":"Definition of elements in the resource (if no StructureDefinition)","type":[{"code":"ElementDefinition"}]},{"condition":["sdf-6"],"constraint":[{"expression":"element.first().path.contains('.').not() implies element.first().type.empty()","human":"If the first element in a differential has no \".\" in the path, it has no type","key":"sdf-15a","requirements":"No Type on the root element (differential)","severity":"error","xpath":"not(f:element[1][not(contains(f:path/@value, '.'))]/f:type)"},{"expression":"element.first().path.startsWith(%resource.type) and element.tail().all(path.startsWith(%resource.type&'.'))","human":"In any differential, all the elements must be in the specified type","key":"sdf-8a","severity":"error","xpath":"count(f:element)=count(f:element[f:path/@value=ancestor::f:StructureDefinition/f:type/@value or starts-with(f:path/@value, concat(ancestor::f:StructureDefinition/f:type/@value, '.'))])"}],"definition":"A differential view is expressed relative to the base StructureDefinition - a statement of differences that it applies.","id":"StructureDefinition.differential","max":"1","min":0,"path":"StructureDefinition.differential","short":"Differential view of the structure","type":[{"code":"BackboneElement"}]},{"base":{"max":"*","min":0,"path":"Element.id"},"definition":"unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.","id":"StructureDefinition.differential.id","mapping":[{"identity":"rim","map":"n/a"}],"max":"1","min":0,"path":"StructureDefinition.differential.id","representation":["xmlAttr"],"short":"xml:id (or equivalent in JSON)","type":[{"code":"string"}]},{"alias":["extensions","user content"],"base":{"max":"*","min":0,"path":"Element.extension"},"comments":"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.","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.","id":"StructureDefinition.differential.extension","mapping":[{"identity":"rim","map":"n/a"}],"max":"*","min":0,"path":"StructureDefinition.differential.extension","short":"Additional Content defined by implementations","type":[{"code":"Extension"}]},{"alias":["extensions","user content","modifiers"],"base":{"max":"*","min":0,"path":"BackboneElement.modifierExtension"},"comments":"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.","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.","id":"StructureDefinition.differential.modifierExtension","isModifier":true,"isSummary":true,"mapping":[{"identity":"rim","map":"N/A"}],"max":"*","min":0,"path":"StructureDefinition.differential.modifierExtension","short":"Extensions that cannot be ignored","type":[{"code":"Extension"}]},{"definition":"Captures constraints on each element within the resource.","id":"StructureDefinition.differential.element","mapping":[{"identity":"iso11179","map":"--"}],"max":"*","min":1,"path":"StructureDefinition.differential.element","short":"Definition of elements in the resource (if no StructureDefinition)","type":[{"code":"ElementDefinition"}]}]},"status":"draft","text":{"div":"
\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
NameFlagsCard.TypeDescription & Constraints\"doco\"
\".\"\".\" StructureDefinition IDomainResourceStructural Definition
All element definitions must have unique ids (snapshot)
In any snapshot or differential, no label, code or requirements on the an element without a "." in the path (e.g. the first element)
All element definitions must have unique ids (diff)
element.base cannot appear if there is no base on the structure definition
If there's a type, its content must match the path name in the first element of a snapshot
All element definitions must have an id
Element paths must be unique unless the structure is a constraint
If the structure describes a base Resource or Type, the URL has to start with "http://hl7.org/fhir/StructureDefinition/" and the tail must match the id
A structure must have either a differential, or a snapshot (or both)
If the structure defines an extension then the structure must have context information
If the structure is not abstract, then there SHALL be a baseDefinition
\".\"\".\"\".\" url Σ1..1uriAbsolute URL used to reference this StructureDefinition
\".\"\".\"\".\" identifier Σ0..*IdentifierOther identifiers for the StructureDefinition
\".\"\".\"\".\" version Σ0..1stringLogical id for this version of the StructureDefinition
\".\"\".\"\".\" name Σ1..1stringInformal name for this StructureDefinition
\".\"\".\"\".\" display Σ0..1stringUse this name when displaying the value
\".\"\".\"\".\" status ?!Σ1..1codedraft | active | retired
ConformanceResourceStatus (Required)
\".\"\".\"\".\" experimental Σ0..1booleanIf for testing purposes, not real usage
\".\"\".\"\".\" publisher Σ0..1stringName of the publisher (Organization or individual)
\".\"\".\"\".\" contact Σ0..*BackboneElementContact details of the publisher
\".\"\".\"\".\"\".\" name Σ0..1stringName of an individual to contact
\".\"\".\"\".\"\".\" telecom Σ0..*ContactPointContact details for individual or publisher
\".\"\".\"\".\" date Σ0..1dateTimeDate for this version of the StructureDefinition
\".\"\".\"\".\" description Σ0..1markdownNatural language description of the StructureDefinition
\".\"\".\"\".\" useContext Σ0..*CodeableConceptContent intends to support these contexts
Context of Use ValueSet (Extensible)
\".\"\".\"\".\" requirements 0..1markdownScope and Usage this structure definition is for
\".\"\".\"\".\" copyright 0..1stringUse and/or publishing restrictions
\".\"\".\"\".\" code Σ0..*CodingAssist with indexing and finding
Structure Definition Codes (Example)
\".\"\".\"\".\" fhirVersion Σ0..1idFHIR Version this StructureDefinition targets
\".\"\".\"\".\" mapping I0..*BackboneElementExternal specification that the content is mapped to
Must have at a name or a uri (or both)
\".\"\".\"\".\"\".\" identity 1..1idInternal id when this mapping is used
\".\"\".\"\".\"\".\" uri I0..1uriIdentifies what this mapping refers to
\".\"\".\"\".\"\".\" name I0..1stringNames what this mapping refers to
\".\"\".\"\".\"\".\" comments 0..1stringVersions, Issues, Scope limitations etc.
\".\"\".\"\".\" kind Σ1..1codeprimitive-type | complex-type | resource | logical
StructureDefinitionKind (Required)
\".\"\".\"\".\" abstract Σ1..1booleanWhether the structure is abstract
\".\"\".\"\".\" contextType ΣI0..1coderesource | datatype | extension
ExtensionContext (Required)
\".\"\".\"\".\" context ΣI0..*stringWhere the extension can be used in instances
\".\"\".\"\".\" type ΣI1..1codeType defined or constrained by this structure
FHIRDefinedType (Extensible)
\".\"\".\"\".\" baseDefinition ΣI0..1uriDefinition that this type is constrained/specialized from
\".\"\".\"\".\" derivation ΣI0..1codespecialization | constraint - How relates to base definition
TypeDerivationRule (Required)
\".\"\".\"\".\" snapshot I0..1BackboneElementSnapshot view of the structure
The first element in a snapshot has no type
In any snapshot, all the elements must be in the specified type
Each element definition in a snapshot must have a formal definition and cardinalities
\".\"\".\"\".\"\".\" element I1..*ElementDefinitionDefinition of elements in the resource (if no StructureDefinition)
\".\"\".\"\".\" differential I0..1BackboneElementDifferential view of the structure
If the first element in a differential has no "." in the path, it has no type
In any differential, all the elements must be in the specified type
\".\"\".\"\".\"\".\" element 1..*ElementDefinitionDefinition of elements in the resource (if no StructureDefinition)

\"doco\" Documentation for this format
","status":"generated"},"type":"StructureDefinition","url":"http://hl7.org/fhir/StructureDefinition/StructureDefinition"}