• dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources
  contained.contained.empty()
• dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource
  contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
• dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated
  contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
• dom-5: If a resource is contained in another resource, it SHALL NOT have a security label
  contained.meta.security.empty()
• dom-6: A resource should have narrative for robust management
  text.`div`.exists()
• vsd-0: Name should be usable as an identifier for the module by machine processing applications such as code generation
  name.matches('[A-Z]([A-Za-z0-9_]){0,254}')

• rim: Entity. Role, or Act
• rim: N/A

The only time that a resource does not have an id is when it is being submitted to the server using a create operation.

• EHM: Värdemängds-id

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

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. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of it's narrative along with other profiles, value sets, etc.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

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).

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

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 information is added later.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: Act.text?

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. Contained resources may have profiles and tags In their meta elements, but SHALL NOT have security labels.

• rim: N/A

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: N/A

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: N/A

Allows the value set to be referenced by a single globally unique identifier.

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.url
• w5: FiveWs.identifier
• rim: N/A

Allows externally provided and/or usable business identifiers to be easily associated with the module.

Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier) data type, and can then identify this value set outside of FHIR, where it is not possible to use the logical URI.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.identifier
• w5: FiveWs.identifier
• objimpl: no-gen-base

There may be different value set 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 value set with the format [url]|[version].

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.version
• w5: FiveWs.version
• EHM: Version

Support human navigation and code generation.

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.A name should be provided unless the value set is a contained resource (e.g. an anonymous value set in a profile). Most registries will require a name.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• EHM: Tekniskt namn

This name does not need to be machine-processing friendly and may contain punctuation, white-space, etc.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.title
• EHM: Namn

Allows filtering of value sets that are appropriate for use versus not.See also the valueset-workflowStatus extension for additional status information related to the editorial process.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.status
• w5: FiveWs.status
• EHM: Status

Enables experimental content to be developed following the same lifecycle that would be used for a production-level value set.

Allows filtering of value sets that are appropriate for use versus not.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.experimental
• w5: FiveWs.class

Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the value set. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.date
• w5: FiveWs.recorded
• rim: N/A
• EHM: Revisionsdatum

Helps establish the "authority/credibility" of the value set. May also allow for contact.

Usually an organization but may be an individual. The publisher (or steward) of the value set is the organization or individual primarily responsible for the maintenance and upkeep of the value set. 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 value set. This item SHOULD be populated unless the information is available from context.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.publisher
• w5: FiveWs.witness
• EHM: Utgivare

May be a web site, an email address, a telephone number, etc.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.contact

This description can be used to capture details such as why the value set 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 value set 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 value set is presumed to be the predominant language in the place the value set was created).The description is not intended to describe the semantics of the Value Set - there are no intrinsic semantics separate from the codes contained in its expansion. The description should capture its intended use, which is needed for ensuring integrity for its use in models across future changes. A description should be provided unless the value set is a contained resource (e.g. an anonymous value set in a profile). Most registries will require a description.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.description
• rim: N/A
• EHM: Beskrivning

Assist in searching for appropriate content.

When multiple useContexts are specified, there is no expectation that all or any of the contexts apply.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.useContext

It may be possible for the value set to be used in jurisdictions other than those for which it was originally designed or intended.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.jurisdiction

Normally immutability is set to 'false', which is the default assumption if it is not populated. Note that the implication is that if this is set to 'true', there may be only one ValueSet version for this definition. Immutability tends to be set to 'true' in one of two cases: - Where the value set, by the nature of its usage, cannot change. For example "All specializations of ACT in ActClassCode" - Where there's no safe way to express the "Purpose" such that someone else could safely make changes to the value set definition. Source workflow control must guarantee that the same URI always yields the same definition.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

This element does not describe the usage of the value set. 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 value set.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.purpose
• w5: FiveWs.why[x]
• objimpl: no-gen-base

Consumers must be able to determine any legal restrictions on the use of the value set and/or its content.

nullFrequently, the copyright differs between the value set and the codes that are included. The copyright statement should clearly differentiate between these when required.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• workflow: Definition.copyright
• objimpl: no-gen-base

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: n/a

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: n/a

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: N/A

With a defined lockedDate the value set is considered "Locked". Otherwise, the value set may have different expansions as underlying code systems and/or value sets evolve. The interpretation of lockedDate is often dependent on the context - e.g. a SNOMED CT derived value set with a lockedDate will have a different expansion in USA than in UK. If a value set specifies a version for include and exclude statements, and also specifies a locked date, the specified versions need to be available that date, or the value set will not be usable.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• w5: FiveWs.init

Note that in the FHIR terminology framework, "deprecated" does not mean inactive, but in some code systems, e.g. LOINC, "deprecated" does mean inactive. Code systems should define what codes are considered to be inactive. If this is not clearly defined (including in the FHIR code system resource), then all codes are assumed to be active.

The Value Set Definition specification defines an ActiveOnly element, which is the reverse of this element e.g. (ValueSet.compose.inactive=FALSE) is the same as (VSD.ActiveOnly=TRUE).

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

All the conditions in an include must be true. If a system is listed, all the codes from the system are listed. If one or more filters are listed, all of the filters must apply. If one or more value sets are listed, the codes must be in all the value sets. E.g. each include is 'include all the codes that meet all these conditions'.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• vsd-1: A value set include/exclude SHALL have a value set or a system
  valueSet.exists() or system.exists()
• vsd-2: A value set with concepts or filters SHALL include a system
  (concept.exists() or filter.exists()) implies system.exists()
• vsd-3: Cannot have both concept and filter
  concept.empty() or filter.empty()

• rim: N/A
• EHM: Kodsystem

• rim: n/a

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: n/a

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: N/A

If there are no codes or filters, the entire code system is included. Note that the set of codes that are included may contain abstract codes. See ''Coding.system'' for further documentation about the correct value for the system element.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: N/A
• EHM: Kodsystem referens

This is used when selecting the descendants of a concept - they may change between versions. If no version is specified, then the exact contents of the value set might not be known until a context of use binds it to a particular version. The special value '*' means all versions; It is at server discretion regarding expansions and which versions must be supported.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: N/A
• EHM: Kodsystem version

The list of concepts is considered ordered, though the order might not have any particular significance. Typically, the order of an expansion follows that defined in the compose element.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: N/A
• EHM: Koncept

• rim: n/a

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: n/a

This is provided for when the source code system doesn't actually provide a definition (there are many such). Providing an definition for a code SHOULD NOT be done where the underlying code system provides a definition.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: n/a

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: N/A

Expressions are allowed if defined by the underlying code system.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: N/A
• EHM: Kod

The value set resource allows for an alternative display to be specified for when this concept is used in this particular value set. See notes in the value set narrative about the correct use of this element.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: N/A
• EHM: Term

Concepts have both a display and an array of designation. The display is equivalent to a special designation with an implied designation.use of "primary code" and a language equal to the Resource Language.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• EHM: Ytterligare benämningar

• rim: n/a

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: n/a

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: N/A

In the absence of a language, the resource language applies.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• EHM: Språk

If no use is provided, the designation can be assumed to be suitable for general display to a human user.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• EHM: Alternativ benämningstyp

• rim: n/a

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: n/a

Need to be unambiguous about the source of the definition of the symbol.

The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• v2: C*E.3
• rim: ./codeSystem
• orim: fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem
• EHM: Alternativ benämningssystemreferens

Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• v2: C*E.7
• rim: ./codeSystemVersion
• orim: fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion

Need to refer to a particular code in the system.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• v2: C*E.1
• rim: ./code
• orim: fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code
• EHM: Alternativ benämningskod

Need to be able to carry a human-readable meaning of the code for readers that do not know the system.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• v2: C*E.2 - but note this is not well followed
• rim: CV.displayName
• orim: fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName
• EHM: Alternativ benämningsterm

This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing.

Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• v2: Sometimes implied by being first
• rim: CD.codingRationale
• orim: fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• EHM: Alternativ term

Selecting codes by specifying filters based on properties is only possible where the underlying code system defines appropriate properties. Note that in some cases, the underlying code system defines the logical concepts but not the literal codes for the concepts. In such cases, the literal definitions may be provided by a third party.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: N/A

• rim: n/a

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: n/a

Modifier extensions allow for extensions that cannot be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the definition of modifier extensions.

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.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())
• ext-1: Must have either extensions or value[x], not both
  extension.exists() != value.exists()

• rim: N/A

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: N/A

In case filter.property represents a property of the system, the operation applies to the selected property. In case filter.property represents a filter of the system, the operation SHALL match one of the CodeSystem.filter.operator values.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: N/A

Use regex matching with care - full regex matching on every SNOMED CT term is prohibitive, for example.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: N/A

The value set URI is either a logical reference to a defined value set such as a SNOMED CT reference set, or a direct reference to a value set definition using ValueSet.url. The reference might not refer to an actual FHIR ValueSet resource; in this case, whatever is referred to is an implicit definition of a value set that needs to be clear about how versions are resolved.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: N/A

Usually this is used to selectively exclude codes that were included by subsumption in the inclusions. Any display names specified for the codes are ignored.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())

• rim: N/A

Expansion is performed to produce a collection of codes that are ready to use for data entry or validation. Value set expansions are always considered to be stateless - they are a record of the set of codes in the value set at a point in time under a given set of conditions, and are not subject to ongoing maintenance.

Expansion.parameter is a simplified list of parameters - a subset of the features of the Parameters resource.

• ele-1: All FHIR elements must have a @value or children
  hasValue() or (children().count() > id.count())