Data Model Libraries
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    StructureDefinition Class

    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.

    FHIR Specification

    • Short: Structural Definition
    • 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.
    • FHIR Version: 4.0.1

    Hierarchy (View Summary)

    Implements

    Index

    Constructors

    Properties

    Methods

    parse getUrlElement setUrlElement hasUrlElement getUrl setUrl hasUrl getIdentifier setIdentifier addIdentifier hasIdentifier getVersionElement setVersionElement hasVersionElement getVersion setVersion hasVersion getNameElement setNameElement hasNameElement getName setName hasName getTitleElement setTitleElement hasTitleElement getTitle setTitle hasTitle getStatusEnumType setStatusEnumType hasStatusEnumType getStatusElement setStatusElement hasStatusElement getStatus setStatus hasStatus getExperimentalElement setExperimentalElement hasExperimentalElement getExperimental setExperimental hasExperimental getDateElement setDateElement hasDateElement getDate setDate hasDate getPublisherElement setPublisherElement hasPublisherElement getPublisher setPublisher hasPublisher getContact setContact addContact hasContact getDescriptionElement setDescriptionElement hasDescriptionElement getDescription setDescription hasDescription getUseContext setUseContext addUseContext hasUseContext getJurisdiction setJurisdiction addJurisdiction hasJurisdiction getPurposeElement setPurposeElement hasPurposeElement getPurpose setPurpose hasPurpose getCopyrightElement setCopyrightElement hasCopyrightElement getCopyright setCopyright hasCopyright getKeyword setKeyword addKeyword hasKeyword getFhirVersionEnumType setFhirVersionEnumType hasFhirVersionEnumType getFhirVersionElement setFhirVersionElement hasFhirVersionElement getFhirVersion setFhirVersion hasFhirVersion getMapping setMapping addMapping hasMapping getKindEnumType setKindEnumType hasKindEnumType getKindElement setKindElement hasKindElement getKind setKind hasKind getAbstractElement setAbstractElement hasAbstractElement getAbstract setAbstract hasAbstract getContext setContext addContext hasContext getContextInvariantElement setContextInvariantElement addContextInvariantElement hasContextInvariantElement getContextInvariant setContextInvariant addContextInvariant hasContextInvariant getTypeElement setTypeElement hasTypeElement getType setType hasType getBaseDefinitionElement setBaseDefinitionElement hasBaseDefinitionElement getBaseDefinition setBaseDefinition hasBaseDefinition getDerivationEnumType setDerivationEnumType hasDerivationEnumType getDerivationElement setDerivationElement hasDerivationElement getDerivation setDerivation hasDerivation getSnapshot setSnapshot hasSnapshot getDifferential setDifferential hasDifferential fhirType isEmpty isRequiredFieldsEmpty copy toJSON getText setText hasText getContained setContained addContained hasContained getExtension setExtension hasExtension getExtensionByUrl addExtension removeExtension getModifierExtension setModifierExtension hasModifierExtension getModifierExtensionByUrl addModifierExtension removeModifierExtension resourceType getIdElement setIdElement hasIdElement getId setId hasId getMeta setMeta hasMeta getImplicitRulesElement setImplicitRulesElement hasImplicitRulesElement getImplicitRules setImplicitRules hasImplicitRules getLanguageElement setLanguageElement hasLanguageElement getLanguage setLanguage hasLanguage isResource isDataType isComplexDataType isPrimitive isBooleanPrimitive isStringPrimitive isNumberPrimitive isBigIntPrimitive isDateTimePrimitive copyValues initIdentifier initContact initUseContext initJurisdiction initKeyword initMapping initContext initContextInvariant

    Constructors

    Properties

    url: null | UriType

    StructureDefinition.url Element

    FHIR Specification

    • Short: Canonical identifier for this structure definition, represented as a URI (globally unique)
    • Definition: An absolute URI that is used to identify this structure definition when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which at which an authoritative instance of this structure definition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the structure definition is stored on different servers.
    • Comment: Can be a urn:uuid: or a urn:oid: but real http: addresses are preferred. Multiple instances may share the same URL if they have a distinct version. The determination of when to create a new version of a resource (same url, new version) vs. defining a new artifact is up to the author. Considerations for making this decision are found in Technical and Business Versions. In some cases, the resource can no longer be found at the stated url, but the url itself cannot change. Implementations can use the meta.source element to indicate where the current master source of the resource can be found.
    • Requirements: Allows the structure definition to be referenced by a single globally unique identifier.
    • FHIR Type: uri
    • Cardinality: 1..1
    • isModifier: false
    • isSummary: true
    identifier?: Identifier[]

    StructureDefinition.identifier Element

    FHIR Specification

    • Short: Additional identifier for the structure definition
    • Definition: A formal identifier that is used to identify this structure definition when it is represented in other formats, or referenced in a specification, model, design or an instance.
    • Comment: Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier) data type, and can then identify this structure definition outside of FHIR, where it is not possible to use the logical URI.
    • Requirements: Allows externally provided and/or usable business identifiers to be easily associated with the module.
    • FHIR Type: Identifier
    • Cardinality: 0..*
    • isModifier: false
    • isSummary: true
    version?: StringType

    StructureDefinition.version Element

    FHIR Specification

    • Short: Business version of the structure definition
    • Definition: The identifier that is used to identify this version of the structure definition when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the structure definition author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence.
    • Comment: There may be different structure definition instances that have the same identifier but different versions. The version can be appended to the url in a reference to allow a reference to a particular business version of the structure definition with the format [url]|[version].
    • FHIR Type: string
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: true
    name: null | StringType

    FHIR Specification

    • Short: Name for this structure definition (computer friendly)
    • Definition: A natural language name identifying the structure definition. This name should be usable as an identifier for the module by machine processing applications such as code generation.
    • Comment: The name is not expected to be globally unique. The name should be a simple alphanumeric type name to ensure that it is machine-processing friendly.Some Examples: * O2SatObservation * PresentationReport * Immunization2 * AcmeAdmissionRecordOld.
    • Requirements: Support human navigation and code generation.
    • FHIR Type: string
    • Cardinality: 1..1
    • isModifier: false
    • isSummary: true
    title?: StringType

    StructureDefinition.title Element

    FHIR Specification

    • Short: Name for this structure definition (human friendly)
    • Definition: A short, descriptive, user-friendly title for the structure definition.
    • Comment: This name does not need to be machine-processing friendly and may contain punctuation, white-space, etc.Applications don't have to use this name but can always fall back to it. The title also corresponds to the label for the root element.
    • FHIR Type: string
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: true
    publicationStatusEnum: PublicationStatusEnum

    FHIR CodeSystem: PublicationStatus

    status: null | EnumCodeType

    StructureDefinition.status Element

    FHIR Specification

    • Short: draft | active | retired | unknown
    • Definition: The status of this structure definition. Enables tracking the life-cycle of the content.
    • Comment: Allows filtering of structure definitions that are appropriate for use versus not.
    • FHIR Type: code
    • Cardinality: 1..1
    • isModifier: true
    • isModifierReason: This is labeled as "Is Modifier" because applications should not use a retired {{title}} without due consideration
    • isSummary: true

    CodeSystem Enumeration: PublicationStatusEnum

    experimental?: BooleanType

    StructureDefinition.experimental Element

    FHIR Specification

    • Short: For testing purposes, not real usage
    • Definition: A Boolean value to indicate that this structure definition is authored for testing purposes (or education/evaluation/marketing) and is not intended to be used for genuine usage.
    • Comment: Allows filtering of structure definitions that are appropriate for use versus not.
    • Requirements: Enables experimental content to be developed following the same lifecycle that would be used for a production-level structure definition.
    • FHIR Type: boolean
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: true

    StructureDefinition.date Element

    FHIR Specification

    • Short: Date last changed
    • Definition: The date (and optionally time) when the structure definition was published. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the structure definition changes.
    • Comment: Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the structure definition. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.
    • FHIR Type: dateTime
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: true
    publisher?: StringType

    StructureDefinition.publisher Element

    FHIR Specification

    • Short: Name of the publisher (organization or individual)
    • Definition: The name of the organization or individual that published the structure definition.
    • Comment: Usually an organization but may be an individual. The publisher (or steward) of the structure definition is the organization or individual primarily responsible for the maintenance and upkeep of the structure definition. This is not necessarily the same individual or organization that developed and initially authored the content. The publisher is the primary point of contact for questions or issues with the structure definition. This item SHOULD be populated unless the information is available from context.
    • Requirements: Helps establish the "authority/credibility" of the structure definition. May also allow for contact.
    • FHIR Type: string
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: true
    contact?: ContactDetail[]

    StructureDefinition.contact Element

    FHIR Specification

    • Short: Contact details for the publisher
    • Definition: Contact details to assist a user in finding and communicating with the publisher.
    • Comment: May be a web site, an email address, a telephone number, etc.
    • FHIR Type: ContactDetail
    • Cardinality: 0..*
    • isModifier: false
    • isSummary: true
    description?: MarkdownType

    StructureDefinition.description Element

    FHIR Specification

    • Short: Natural language description of the structure definition
    • Definition: A free text natural language description of the structure definition from a consumer's perspective.
    • Comment: This description can be used to capture details such as why the structure definition was built, comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is not a rendering of the structure definition as conveyed in the 'text' field of the resource itself. This item SHOULD be populated unless the information is available from context (e.g. the language of the structure definition is presumed to be the predominant language in the place the structure definition was created).
    • FHIR Type: markdown
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: false
    useContext?: UsageContext[]

    StructureDefinition.useContext Element

    FHIR Specification

    • Short: The context that the content is intended to support
    • Definition: The content was developed with a focus and intent of supporting the contexts that are listed. These contexts may be general categories (gender, age, ...) or may be references to specific programs (insurance plans, studies, ...) and may be used to assist with indexing and searching for appropriate structure definition instances.
    • Comment: When multiple useContexts are specified, there is no expectation that all or any of the contexts apply.
    • Requirements: Assist in searching for appropriate content.
    • FHIR Type: UsageContext
    • Cardinality: 0..*
    • isModifier: false
    • isSummary: true
    jurisdiction?: CodeableConcept[]

    StructureDefinition.jurisdiction Element

    FHIR Specification

    • Short: Intended jurisdiction for structure definition (if applicable)
    • Definition: A legal or geographic region in which the structure definition is intended to be used.
    • Comment: It may be possible for the structure definition to be used in jurisdictions other than those for which it was originally designed or intended.
    • FHIR Type: CodeableConcept
    • Cardinality: 0..*
    • isModifier: false
    • isSummary: true
    purpose?: MarkdownType

    StructureDefinition.purpose Element

    FHIR Specification

    • Short: Why this structure definition is defined
    • Definition: Explanation of why this structure definition is needed and why it has been designed as it has.
    • Comment: This element does not describe the usage of the structure definition. Instead, it provides traceability of ''why'' the resource is either needed or ''why'' it is defined as it is. This may be used to point to source materials or specifications that drove the structure of this structure definition.
    • FHIR Type: markdown
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: false
    copyright?: MarkdownType

    StructureDefinition.copyright Element

    FHIR Specification

    • Short: Use and/or publishing 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 structure definition.
    • Requirements: Consumers must be able to determine any legal restrictions on the use of the structure definition and/or its content.
    • FHIR Type: markdown
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: false
    keyword?: Coding[]

    StructureDefinition.keyword Element

    FHIR Specification

    • Short: Assist with indexing and finding
    • Definition: A set of key words or terms from external terminologies that may be used to assist with indexing and searching of templates nby describing the use of this structure definition, or the content it describes.
    • Requirements: Assist in searching for appropriate StructureDefinitions.
    • FHIR Type: Coding
    • Cardinality: 0..*
    • isModifier: false
    • isSummary: true
    fhirVersionEnum: FhirVersionEnum

    FHIR CodeSystem: FhirVersion

    fhirVersion?: EnumCodeType

    StructureDefinition.fhirVersion Element

    FHIR Specification

    • Short: FHIR Version this StructureDefinition targets
    • 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 4.0.1. for this version.
    • Comment: 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.
    • FHIR Type: code
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: true

    CodeSystem Enumeration: FhirVersionEnum

    StructureDefinition.mapping Element

    FHIR Specification

    • Short: External specification that the content is mapped to
    • Definition: An external specification that the content is mapped to.
    • FHIR Type: BackboneElement
    • Cardinality: 0..*
    • isModifier: false
    • isSummary: false
    structureDefinitionKindEnum: StructureDefinitionKindEnum

    FHIR CodeSystem: StructureDefinitionKind

    kind: null | EnumCodeType

    StructureDefinition.kind Element

    FHIR Specification

    • Short: primitive-type | complex-type | resource | logical
    • Definition: Defines the kind of structure that this definition is describing.
    • FHIR Type: code
    • Cardinality: 1..1
    • isModifier: false
    • isSummary: true

    CodeSystem Enumeration: StructureDefinitionKindEnum

    abstract_: null | BooleanType

    StructureDefinition.abstract Element

    FHIR Specification

    • Short: Whether the structure is abstract
    • Definition: Whether structure this definition describes is abstract or not - that is, whether the structure is not intended to be instantiated. For Resources and Data types, abstract types will never be exchanged between systems.
    • Comment: Abstract Resources cannot be instantiated - a concrete sub-type must be used. Abstract datatypes and extensions cannot be used in an instance. For logical models, the exact implication of "abstract" will rest with the author, depending how the logical model is used. 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 StructureDefinition, but have children described, are anonymous concrete types that specialize Element.
    • FHIR Type: boolean
    • Cardinality: 1..1
    • isModifier: false
    • isSummary: true

    StructureDefinition.context Element

    FHIR Specification

    • Short: If an extension, where it can be used in instances
    • Definition: Identifies the types of resource or data type elements to which the extension can be applied.
    • FHIR Type: BackboneElement
    • Cardinality: 0..*
    • isModifier: false
    • isSummary: true
    contextInvariant?: StringType[]

    StructureDefinition.contextInvariant Element

    FHIR Specification

    • Short: FHIRPath invariants - when the extension can be used
    • Definition: A set of rules as FHIRPath Invariants about when the extension can be used (e.g. co-occurrence variants for the extension). All the rules must be true.
    • Comment: The rules are only evaluated when the extension is present. When evaluating the invariant, the FHIRPath focus is the element that holds the extension, and %extension refers to the extension itself.
    • FHIR Type: string
    • Cardinality: 0..*
    • isModifier: false
    • isSummary: true
    type_: null | UriType

    StructureDefinition.type Element

    FHIR Specification

    • Short: Type defined or constrained by this structure
    • Definition: The type this structure 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). References are URLs that are relative to http://hl7.org/fhir/StructureDefinition e.g. "string" is a reference to http://hl7.org/fhir/StructureDefinition/string. Absolute URLs are only allowed in logical models.
    • Comment: 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. The type must match the elements defined in the differential and the snapshot. For all FHIR defined types, the path name of the element will start with the type name. For logical models, where the type is a URL, the type name SHOULD start with the tail of the type URL where required.
    • FHIR Type: uri
    • Cardinality: 1..1
    • isModifier: false
    • isSummary: true
    baseDefinition?: CanonicalType

    StructureDefinition.baseDefinition Element

    FHIR Specification

    • Short: Definition that this type is constrained/specialized from
    • Definition: An absolute URI that is the base structure from which this type is derived, either by specialization or constraint.
    • Comment: 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.
    • FHIR Type: canonical
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: true
    typeDerivationRuleEnum: TypeDerivationRuleEnum

    FHIR CodeSystem: TypeDerivationRule

    derivation?: EnumCodeType

    StructureDefinition.derivation Element

    FHIR Specification

    • Short: specialization | constraint - How relates to base definition
    • Definition: How the type relates to the baseDefinition.
    • Comment: If the definition is a specialization, then it adds new elements in the differential, and the snapshot includes the inherited elements. If the definition is a constraint, then it cannot define new elements, it can only make new rules about existing content (see Profiling Resources).
    • FHIR Type: code
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: true

    CodeSystem Enumeration: TypeDerivationRuleEnum

    StructureDefinition.snapshot Element

    FHIR Specification

    • Short: Snapshot view of the structure
    • Definition: A snapshot view is expressed in a standalone form that can be used and interpreted without considering the base StructureDefinition.
    • FHIR Type: BackboneElement
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: false

    StructureDefinition.differential Element

    FHIR Specification

    • Short: Differential view of the structure
    • Definition: A differential view is expressed relative to the base StructureDefinition - a statement of differences that it applies.
    • FHIR Type: BackboneElement
    • Cardinality: 0..1
    • isModifier: false
    • isSummary: false

    Methods

    • Parse the provided StructureDefinition JSON to instantiate the StructureDefinition data model.

      Parameters

      • sourceJson: Value

        JSON representing FHIR StructureDefinition

      • OptionaloptSourceField: string

        Optional data source field (e.g. <complexTypeName>.<complexTypeFieldName>); defaults to StructureDefinition

      Returns undefined | StructureDefinition

      StructureDefinition data model or undefined for StructureDefinition

      JsonError if the provided JSON is not a valid JSON object

    • Assigns the provided value to the text property.

      Parameters

      Returns this

      this

    • Returns boolean

      true if the text property exists and has a value; false otherwise

    • Assigns the provided Resource array value to the contained property.

      Parameters

      • value: undefined | IResource[]

        the contained array value

      Returns this

      this

    • Returns boolean

      true if the contained property exists and has a value; false otherwise

    • Assigns the provided array of Extension values to the extension property.

      Parameters

      • extension: undefined | IExtension[]

        array of Extensions

      Returns this

      this

    • Determines if the extension property exists.

      Parameters

      • Optionalurl: string

        the url that identifies a specific Extension

      Returns boolean

      true if an Extension has the provided url; false otherwise

      If the url is provided, determines if an Extension having the provided url exists. If the url is not provided, determines if the extension property exists and has any values.

      AssertionError for invalid url

    • Adds the provided Extension to the extension property array.

      Parameters

      • extension: undefined | IExtension

        the Extension value to add to the extension property array

      Returns this

      this

    • Removes the Extension having the provided url from the extension property array.

      Parameters

      • url: string

        the url that identifies a specific Extension to remove

      Returns void

      AssertionError for invalid url

    • Determines if the modifierExtension property exists.

      Parameters

      • Optionalurl: string

        the url that identifies a specific Extension

      Returns boolean

      true if an Extension has the provided url

      If the url is provided, determines if an Extension having the provided url exists. If the url is not provided, determines if the modifierExtension property exists and has any values.

      AssertionError for invalid url

    • Assigns the provided PrimitiveType value to the id property.

      Parameters

      • element: undefined | IdType

        the id value

      Returns this

      this

    • Returns undefined | string

      the id property value as a primitive value

    • Assigns the provided primitive value to the id property.

      Parameters

      • value: undefined | string

        the id value

      Returns this

      this

      PrimitiveTypeError for invalid primitive types

    • Returns boolean

      true if the id property exists and has a value; false otherwise

    • Assigns the provided value to the meta property.

      Parameters

      • value: undefined | Meta

        the meta value

      Returns this

      this

    • Returns boolean

      true if the meta property exists and has a value; false otherwise

    • Assigns the provided primitive value to the implicitRules property.

      Parameters

      • value: undefined | string

        the implicitRules value

      Returns this

      this

      PrimitiveTypeError for invalid primitive types

    • Returns undefined | string

      the language property value as a primitive value

    • Assigns the provided primitive value to the language property.

      Parameters

      • value: undefined | string

        the language value

      Returns this

      this

      PrimitiveTypeError for invalid primitive types

    • Returns boolean

      true if the language property exists and has a value; false otherwise

    • Returns boolean

      true if the instance is a FHIR complex or primitive datatype; false otherwise