Extensions for Using Data Elements from FHIR R5 in FHIR R4B
0.1.0 - STU International flag

Extensions for Using Data Elements from FHIR R5 in FHIR R4B - Downloaded Version null See the Directory of published versions

Resource Profile: Profile_R5_CodeSystem_R4B - Detailed Descriptions

Page standards status: Trial-use Maturity Level: 0

Definitions for the profile-CodeSystem resource profile.

Guidance on how to interpret the contents of this table can be foundhere

0. CodeSystem
Definition

The CodeSystem resource is used to declare the existence of and describe a code system or code system supplement and its key properties, and optionally define a part or all of its content.

ShortDeclares the existence of and describes a code system or code system supplement
Control0..*
Is Modifierfalse
Must Supportfalse
Summaryfalse
Invariantscsd-0: Name should be usable as an identifier for the module by machine processing applications such as code generation (name.exists() implies name.matches('[A-Z]([A-Za-z0-9_]){0,254}'))
csd-1: Within a code system definition, all the codes SHALL be unique (concept.code.combine($this.descendants().concept.code).isDistinct())
dom-2: If the resource is contained in another resource, it SHALL NOT contain nested Resources (contained.contained.empty())
dom-3: If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource (contained.where(((id.exists() and ('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url)))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(uri) = '#').exists()).not()).trace('unmatched', id).empty())
dom-4: If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated (contained.meta.versionId.empty() and contained.meta.lastUpdated.empty())
dom-5: If a resource is contained in another resource, it SHALL NOT have a security label (contained.meta.security.empty())
dom-6: A resource should have narrative for robust management (text.`div`.exists())
csd-0: Name should be usable as an identifier for the module by machine processing applications such as code generation (name.exists() implies name.matches('[A-Z]([A-Za-z0-9_]){0,254}'))
csd-1: Within a code system definition, all the codes SHALL be unique (concept.code.combine($this.descendants().concept.code).isDistinct())
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.exists() and ('#'+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(uri) = '#').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())
2. CodeSystem.implicitRules
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. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

ShortA set of rules under which this content was created
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. 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.

Control0..1
Typeuri
Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
Must Supportfalse
Summarytrue
Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
4. CodeSystem.extension
Definition

An Extension


May be used to represent additional information that is not part of the basic definition of the resource. 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 can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

ShortExtensionAdditional content defined by implementations
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.

Control0..*
TypeExtension
Is Modifierfalse
Must Supportfalse
Summaryfalse
Alternate Namesextensions, user content
Invariantsele-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())
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())
SlicingThis element introduces a set of slices on CodeSystem.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
  • value @ url
  • 6. CodeSystem.extension:versionAlgorithm
    Slice NameversionAlgorithm
    Definition

    R5: CodeSystem.versionAlgorithm[x] (new:Coding, string)

    ShortR5: How to compare versions (new)
    Comments

    Element CodeSystem.versionAlgorithm[x] has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.versionAlgorithm[x] has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.versionAlgorithm[x]: http://hl7.org/fhir/StructureDefinition/artifact-versionAlgorithm. If set as a string, this is a FHIRPath expression that has two additional context variables passed in - %version1 and %version2 and will return a negative number if version1 is newer, a positive number if version2 and a 0 if the version ordering can't be successfully be determined.

    Control0..1
    TypeExtension(Artifact Version Algorithm) (Extension Type: Choice of: string, Coding)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-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())
    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())
    8. CodeSystem.extension:copyrightLabel
    Slice NamecopyrightLabel
    Definition

    R5: CodeSystem.copyrightLabel (new:string)

    ShortR5: Copyright holder and year(s) (new)
    Comments

    Element CodeSystem.copyrightLabel has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.copyrightLabel has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.copyrightLabel: http://hl7.org/fhir/StructureDefinition/artifact-copyrightLabel. The (c) symbol should NOT be included in this string. It will be added by software when rendering the notation. Full details about licensing, restrictions, warrantees, etc. goes in the more general 'copyright' element.

    Control0..1
    TypeExtension(Artifact Copyright Label) (Extension Type: string)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-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())
    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())
    10. CodeSystem.extension:approvalDate
    Slice NameapprovalDate
    Definition

    R5: CodeSystem.approvalDate (new:date)

    ShortR5: When the CodeSystem was approved by publisher (new)
    Comments

    Element CodeSystem.approvalDate has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.approvalDate has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.approvalDate: http://hl7.org/fhir/StructureDefinition/artifact-approvalDate. The 'date' element may be more recent than the approval date because of minor changes or editorial corrections.

    See guidance around (not) making local changes to elements here.

    Control0..1
    TypeExtension(Artifact Approval Date) (Extension Type: date)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-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())
    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())
    12. CodeSystem.extension:lastReviewDate
    Slice NamelastReviewDate
    Definition

    R5: CodeSystem.lastReviewDate (new:date)

    ShortR5: When the CodeSystem was last reviewed by the publisher (new)
    Comments

    Element CodeSystem.lastReviewDate has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.lastReviewDate has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.lastReviewDate: http://hl7.org/fhir/StructureDefinition/artifact-lastReviewDate. If specified, this date follows the original approval date.

    See guidance around (not) making local changes to elements here.

    Control0..1
    TypeExtension(Artifact Last Review Date) (Extension Type: date)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-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())
    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())
    14. CodeSystem.extension:effectivePeriod
    Slice NameeffectivePeriod
    Definition

    R5: CodeSystem.effectivePeriod (new:Period)

    ShortR5: When the CodeSystem is expected to be used (new)
    Comments

    Element CodeSystem.effectivePeriod has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.effectivePeriod has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.effectivePeriod: http://hl7.org/fhir/StructureDefinition/artifact-effectivePeriod. The effective period for a CodeSystem determines when the content is applicable for usage and is independent of publication and review dates. For example, a system intended to be used for the year 2016 might be published in 2015.

    See guidance around (not) making local changes to elements here.

    Control0..1
    TypeExtension(Artifact Effective Period) (Extension Type: Period)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-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())
    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())
    16. CodeSystem.extension:topic
    Slice Nametopic
    Definition

    R5: CodeSystem.topic (new:CodeableConcept)

    ShortR5: E.g. Education, Treatment, Assessment, etc (new)
    Comments

    Element CodeSystem.topic has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.topic has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.topic: http://hl7.org/fhir/StructureDefinition/artifact-topic. Element CodeSystem.topic has been flagged as deprecated. DEPRECATION NOTE: For consistency, implementations are encouraged to migrate to using the new 'topic' code in the useContext element. (I.e. useContext.code indicating http://terminology.hl7.org/CodeSystem/usage-context-type#topic and useContext.valueCodeableConcept indicating the topic)

    Control0..*
    TypeExtension(Artifact Topic) (Extension Type: CodeableConcept)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-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())
    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())
    18. CodeSystem.extension:author
    Slice Nameauthor
    Definition

    R5: CodeSystem.author (new:ContactDetail)

    ShortR5: Who authored the CodeSystem (new)
    Comments

    Element CodeSystem.author has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.author has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.author: http://hl7.org/fhir/StructureDefinition/artifact-author.

    Control0..*
    TypeExtension(Artifact Author) (Extension Type: ContactDetail)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-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())
    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())
    20. CodeSystem.extension:editor
    Slice Nameeditor
    Definition

    R5: CodeSystem.editor (new:ContactDetail)

    ShortR5: Who edited the CodeSystem (new)
    Comments

    Element CodeSystem.editor has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.editor has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.editor: http://hl7.org/fhir/StructureDefinition/artifact-editor.

    Control0..*
    TypeExtension(Artifact Editor) (Extension Type: ContactDetail)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-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())
    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())
    22. CodeSystem.extension:reviewer
    Slice Namereviewer
    Definition

    R5: CodeSystem.reviewer (new:ContactDetail)

    ShortR5: Who reviewed the CodeSystem (new)
    Comments

    Element CodeSystem.reviewer has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.reviewer has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.reviewer: http://hl7.org/fhir/StructureDefinition/artifact-reviewer. See guidance around (not) making local changes to elements here.

    Control0..*
    TypeExtension(Artifact Reviewer) (Extension Type: ContactDetail)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-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())
    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())
    24. CodeSystem.extension:endorser
    Slice Nameendorser
    Definition

    R5: CodeSystem.endorser (new:ContactDetail)

    ShortR5: Who endorsed the CodeSystem (new)
    Comments

    Element CodeSystem.endorser has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.endorser has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.endorser: http://hl7.org/fhir/StructureDefinition/artifact-endorser. See guidance around (not) making local changes to elements here.

    Control0..*
    TypeExtension(Artifact Endorser) (Extension Type: ContactDetail)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-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())
    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())
    26. CodeSystem.extension:relatedArtifact
    Slice NamerelatedArtifact
    Definition

    R5: CodeSystem.relatedArtifact (new:RelatedArtifact)

    ShortR5: Additional documentation, citations, etc (new)
    Comments

    Element CodeSystem.relatedArtifact has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.relatedArtifact has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.relatedArtifact: http://hl7.org/fhir/StructureDefinition/artifact-relatedArtifact. Each related artifact is either an attachment, or a reference to another resource, but not both.

    Control0..*
    TypeExtension(Artifact related artifact) (Extension Type: RelatedArtifact)
    Is Modifierfalse
    Must Supportfalse
    Summaryfalse
    Invariantsele-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())
    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())
    28. CodeSystem.modifierExtension
    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 and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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.

    Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

    ShortExtensions that cannot be ignored
    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.

    Control0..*
    TypeExtension
    Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
    Must Supportfalse
    Summaryfalse
    Requirements

    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.

    Alternate Namesextensions, user content
    Invariantsele-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())
    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())
    30. CodeSystem.status
    Definition

    The date (and optionally time) when the code system resource was created or revised.

    Shortdraft | active | retired | unknown
    Comments

    Allows filtering of code systems that are appropriate for use versus not.

    Control1..1
    BindingThe codes SHALL be taken from PublicationStatushttp://hl7.org/fhir/ValueSet/publication-status|4.3.0
    (required to http://hl7.org/fhir/ValueSet/publication-status|4.3.0)

    The lifecycle status of an artifact.

    Typecode
    Is Modifiertrue because This is labeled as "Is Modifier" because applications should not use a retired {{title}} without due consideration
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Must Supportfalse
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    32. CodeSystem.content
    Definition

    The extent of the content of the code system (the concepts and codes it defines) are represented in this resource instance.

    Shortnot-present | example | fragment | complete | supplement
    Control1..1
    BindingThe codes SHALL be taken from CodeSystemContentModehttp://hl7.org/fhir/ValueSet/codesystem-content-mode|4.3.0
    (required to http://hl7.org/fhir/ValueSet/codesystem-content-mode|4.3.0)

    The extent of the content of the code system (the concepts and codes it defines) are represented in a code system resource.

    Typecode
    Is Modifierfalse
    Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
    Must Supportfalse
    Summarytrue
    Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
    ele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))

    Guidance on how to interpret the contents of this table can be foundhere

    0. CodeSystem
    2. CodeSystem.extension
    Control0..*
    SlicingThis element introduces a set of slices on CodeSystem.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
    • value @ url
    • 4. CodeSystem.extension:versionAlgorithm
      Slice NameversionAlgorithm
      Definition

      R5: CodeSystem.versionAlgorithm[x] (new:Coding, string)

      ShortR5: How to compare versions (new)
      Comments

      Element CodeSystem.versionAlgorithm[x] has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.versionAlgorithm[x] has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.versionAlgorithm[x]: http://hl7.org/fhir/StructureDefinition/artifact-versionAlgorithm. If set as a string, this is a FHIRPath expression that has two additional context variables passed in - %version1 and %version2 and will return a negative number if version1 is newer, a positive number if version2 and a 0 if the version ordering can't be successfully be determined.

      Control0..1
      TypeExtension(Artifact Version Algorithm) (Extension Type: Choice of: string, Coding)
      6. CodeSystem.extension:copyrightLabel
      Slice NamecopyrightLabel
      Definition

      R5: CodeSystem.copyrightLabel (new:string)

      ShortR5: Copyright holder and year(s) (new)
      Comments

      Element CodeSystem.copyrightLabel has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.copyrightLabel has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.copyrightLabel: http://hl7.org/fhir/StructureDefinition/artifact-copyrightLabel. The (c) symbol should NOT be included in this string. It will be added by software when rendering the notation. Full details about licensing, restrictions, warrantees, etc. goes in the more general 'copyright' element.

      Control0..1
      TypeExtension(Artifact Copyright Label) (Extension Type: string)
      8. CodeSystem.extension:approvalDate
      Slice NameapprovalDate
      Definition

      R5: CodeSystem.approvalDate (new:date)

      ShortR5: When the CodeSystem was approved by publisher (new)
      Comments

      Element CodeSystem.approvalDate has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.approvalDate has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.approvalDate: http://hl7.org/fhir/StructureDefinition/artifact-approvalDate. The 'date' element may be more recent than the approval date because of minor changes or editorial corrections.

      See guidance around (not) making local changes to elements here.

      Control0..1
      TypeExtension(Artifact Approval Date) (Extension Type: date)
      10. CodeSystem.extension:lastReviewDate
      Slice NamelastReviewDate
      Definition

      R5: CodeSystem.lastReviewDate (new:date)

      ShortR5: When the CodeSystem was last reviewed by the publisher (new)
      Comments

      Element CodeSystem.lastReviewDate has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.lastReviewDate has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.lastReviewDate: http://hl7.org/fhir/StructureDefinition/artifact-lastReviewDate. If specified, this date follows the original approval date.

      See guidance around (not) making local changes to elements here.

      Control0..1
      TypeExtension(Artifact Last Review Date) (Extension Type: date)
      12. CodeSystem.extension:effectivePeriod
      Slice NameeffectivePeriod
      Definition

      R5: CodeSystem.effectivePeriod (new:Period)

      ShortR5: When the CodeSystem is expected to be used (new)
      Comments

      Element CodeSystem.effectivePeriod has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.effectivePeriod has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.effectivePeriod: http://hl7.org/fhir/StructureDefinition/artifact-effectivePeriod. The effective period for a CodeSystem determines when the content is applicable for usage and is independent of publication and review dates. For example, a system intended to be used for the year 2016 might be published in 2015.

      See guidance around (not) making local changes to elements here.

      Control0..1
      TypeExtension(Artifact Effective Period) (Extension Type: Period)
      14. CodeSystem.extension:topic
      Slice Nametopic
      Definition

      R5: CodeSystem.topic (new:CodeableConcept)

      ShortR5: E.g. Education, Treatment, Assessment, etc (new)
      Comments

      Element CodeSystem.topic has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.topic has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.topic: http://hl7.org/fhir/StructureDefinition/artifact-topic. Element CodeSystem.topic has been flagged as deprecated. DEPRECATION NOTE: For consistency, implementations are encouraged to migrate to using the new 'topic' code in the useContext element. (I.e. useContext.code indicating http://terminology.hl7.org/CodeSystem/usage-context-type#topic and useContext.valueCodeableConcept indicating the topic)

      Control0..*
      TypeExtension(Artifact Topic) (Extension Type: CodeableConcept)
      16. CodeSystem.extension:author
      Slice Nameauthor
      Definition

      R5: CodeSystem.author (new:ContactDetail)

      ShortR5: Who authored the CodeSystem (new)
      Comments

      Element CodeSystem.author has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.author has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.author: http://hl7.org/fhir/StructureDefinition/artifact-author.

      Control0..*
      TypeExtension(Artifact Author) (Extension Type: ContactDetail)
      18. CodeSystem.extension:editor
      Slice Nameeditor
      Definition

      R5: CodeSystem.editor (new:ContactDetail)

      ShortR5: Who edited the CodeSystem (new)
      Comments

      Element CodeSystem.editor has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.editor has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.editor: http://hl7.org/fhir/StructureDefinition/artifact-editor.

      Control0..*
      TypeExtension(Artifact Editor) (Extension Type: ContactDetail)
      20. CodeSystem.extension:reviewer
      Slice Namereviewer
      Definition

      R5: CodeSystem.reviewer (new:ContactDetail)

      ShortR5: Who reviewed the CodeSystem (new)
      Comments

      Element CodeSystem.reviewer has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.reviewer has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.reviewer: http://hl7.org/fhir/StructureDefinition/artifact-reviewer. See guidance around (not) making local changes to elements here.

      Control0..*
      TypeExtension(Artifact Reviewer) (Extension Type: ContactDetail)
      22. CodeSystem.extension:endorser
      Slice Nameendorser
      Definition

      R5: CodeSystem.endorser (new:ContactDetail)

      ShortR5: Who endorsed the CodeSystem (new)
      Comments

      Element CodeSystem.endorser has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.endorser has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.endorser: http://hl7.org/fhir/StructureDefinition/artifact-endorser. See guidance around (not) making local changes to elements here.

      Control0..*
      TypeExtension(Artifact Endorser) (Extension Type: ContactDetail)
      24. CodeSystem.extension:relatedArtifact
      Slice NamerelatedArtifact
      Definition

      R5: CodeSystem.relatedArtifact (new:RelatedArtifact)

      ShortR5: Additional documentation, citations, etc (new)
      Comments

      Element CodeSystem.relatedArtifact has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.relatedArtifact has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.relatedArtifact: http://hl7.org/fhir/StructureDefinition/artifact-relatedArtifact. Each related artifact is either an attachment, or a reference to another resource, but not both.

      Control0..*
      TypeExtension(Artifact related artifact) (Extension Type: RelatedArtifact)
      26. CodeSystem.filter
      28. CodeSystem.filter.operator
      30. CodeSystem.filter.operator.extension
      Control0..*
      SlicingThis element introduces a set of slices on CodeSystem.filter.operator.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
      • value @ url
      • 32. CodeSystem.filter.operator.extension:operator
        Slice Nameoperator
        Definition

        R5: CodeSystem.filter.operator

        ShortR5: = | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | child-of | descendent-leaf | exists
        Comments

        Element CodeSystem.filter.operator is mapped to FHIR R4B element CodeSystem.filter.operator as SourceIsBroaderThanTarget.

        Control0..*
        TypeExtension(R5: = | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | child-of | descendent-leaf | exists) (Extension Type: code)
        34. CodeSystem.concept
        36. CodeSystem.concept.designation
        38. CodeSystem.concept.designation.extension
        Control0..*
        SlicingThis element introduces a set of slices on CodeSystem.concept.designation.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
        • value @ url
        • 40. CodeSystem.concept.designation.extension:additionalUse
          Slice NameadditionalUse
          Definition

          R5: CodeSystem.concept.designation.additionalUse (new:Coding)

          ShortR5: Additional ways how this designation would be used (new)
          Comments

          Element CodeSystem.concept.designation.additionalUse has a context of CodeSystem.concept.designation based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.concept.designation.additionalUse has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). This was added rather than increasing the cardinality of .use to 0..* in order to maintain backward compatibility.

          Control0..*
          TypeExtension(R5: Additional ways how this designation would be used (new)) (Extension Type: Coding)

          Guidance on how to interpret the contents of this table can be foundhere

          0. CodeSystem
          Definition

          The CodeSystem resource is used to declare the existence of and describe a code system or code system supplement and its key properties, and optionally define a part or all of its content.

          ShortDeclares the existence of and describes a code system or code system supplement
          Control0..*
          Is Modifierfalse
          Must Supportfalse
          Summaryfalse
          Invariantscsd-0: Name should be usable as an identifier for the module by machine processing applications such as code generation (name.exists() implies name.matches('[A-Z]([A-Za-z0-9_]){0,254}'))
          csd-1: Within a code system definition, all the codes SHALL be unique (concept.code.combine($this.descendants().concept.code).isDistinct())
          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.exists() and ('#'+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(uri) = '#').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())
          2. CodeSystem.id
          Definition

          The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes.

          ShortLogical id of this artifact
          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.

          Control0..1
          Typeid
          Is Modifierfalse
          Must Supportfalse
          Summarytrue
          4. CodeSystem.meta
          Definition

          The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource.

          ShortMetadata about the resource
          Control0..1
          TypeMeta
          Is Modifierfalse
          Must Supportfalse
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          6. CodeSystem.implicitRules
          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. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc.

          ShortA set of rules under which this content was created
          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. 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.

          Control0..1
          Typeuri
          Is Modifiertrue because This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supportfalse
          Summarytrue
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          8. CodeSystem.language
          Definition

          The base language in which the resource is written.

          ShortLanguage of the resource content
          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).

          Control0..1
          BindingThe codes SHOULD be taken from CommonLanguages
          (preferred to http://hl7.org/fhir/ValueSet/languages|4.3.0)

          IETF language tag

          Additional BindingsPurpose
          AllLanguagesMax Binding
          Typecode
          Is Modifierfalse
          Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
          Must Supportfalse
          Summaryfalse
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          10. CodeSystem.text
          Definition

          A human-readable narrative that contains a summary of the resource and can 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.

          ShortText summary of the resource, for human interpretation
          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 information is added later.

          Control0..1
          TypeNarrative
          Is Modifierfalse
          Must Supportfalse
          Summaryfalse
          Alternate Namesnarrative, html, xhtml, display
          Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
          12. CodeSystem.contained
          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.

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

          Control0..*
          TypeResource
          Is Modifierfalse
          Must Supportfalse
          Summaryfalse
          Alternate Namesinline resources, anonymous resources, contained resources
          Invariantsdom-r4b: Containing new R4B resources within R4 resources may cause interoperability issues if instances are shared with R4 systems (($this is Citation or $this is Evidence or $this is EvidenceReport or $this is EvidenceVariable or $this is MedicinalProductDefinition or $this is PackagedProductDefinition or $this is AdministrableProductDefinition or $this is Ingredient or $this is ClinicalUseDefinition or $this is RegulatedAuthorization or $this is SubstanceDefinition or $this is SubscriptionStatus or $this is SubscriptionTopic) implies (%resource is Citation or %resource is Evidence or %resource is EvidenceReport or %resource is EvidenceVariable or %resource is MedicinalProductDefinition or %resource is PackagedProductDefinition or %resource is AdministrableProductDefinition or %resource is Ingredient or %resource is ClinicalUseDefinition or %resource is RegulatedAuthorization or %resource is SubstanceDefinition or %resource is SubscriptionStatus or %resource is SubscriptionTopic))
          14. CodeSystem.extension
          Definition

          An Extension

          ShortExtension
          Control0..*
          TypeExtension
          Is Modifierfalse
          Must Supportfalse
          Summaryfalse
          Invariantsele-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())
          SlicingThis element introduces a set of slices on CodeSystem.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
          • value @ url
          • 16. CodeSystem.extension:versionAlgorithm
            Slice NameversionAlgorithm
            Definition

            R5: CodeSystem.versionAlgorithm[x] (new:Coding, string)

            ShortR5: How to compare versions (new)
            Comments

            Element CodeSystem.versionAlgorithm[x] has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.versionAlgorithm[x] has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.versionAlgorithm[x]: http://hl7.org/fhir/StructureDefinition/artifact-versionAlgorithm. If set as a string, this is a FHIRPath expression that has two additional context variables passed in - %version1 and %version2 and will return a negative number if version1 is newer, a positive number if version2 and a 0 if the version ordering can't be successfully be determined.

            Control0..1
            TypeExtension(Artifact Version Algorithm) (Extension Type: Choice of: string, Coding)
            Is Modifierfalse
            Must Supportfalse
            Summaryfalse
            Invariantsele-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())
            18. CodeSystem.extension:copyrightLabel
            Slice NamecopyrightLabel
            Definition

            R5: CodeSystem.copyrightLabel (new:string)

            ShortR5: Copyright holder and year(s) (new)
            Comments

            Element CodeSystem.copyrightLabel has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.copyrightLabel has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.copyrightLabel: http://hl7.org/fhir/StructureDefinition/artifact-copyrightLabel. The (c) symbol should NOT be included in this string. It will be added by software when rendering the notation. Full details about licensing, restrictions, warrantees, etc. goes in the more general 'copyright' element.

            Control0..1
            TypeExtension(Artifact Copyright Label) (Extension Type: string)
            Is Modifierfalse
            Must Supportfalse
            Summaryfalse
            Invariantsele-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())
            20. CodeSystem.extension:approvalDate
            Slice NameapprovalDate
            Definition

            R5: CodeSystem.approvalDate (new:date)

            ShortR5: When the CodeSystem was approved by publisher (new)
            Comments

            Element CodeSystem.approvalDate has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.approvalDate has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.approvalDate: http://hl7.org/fhir/StructureDefinition/artifact-approvalDate. The 'date' element may be more recent than the approval date because of minor changes or editorial corrections.

            See guidance around (not) making local changes to elements here.

            Control0..1
            TypeExtension(Artifact Approval Date) (Extension Type: date)
            Is Modifierfalse
            Must Supportfalse
            Summaryfalse
            Invariantsele-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())
            22. CodeSystem.extension:lastReviewDate
            Slice NamelastReviewDate
            Definition

            R5: CodeSystem.lastReviewDate (new:date)

            ShortR5: When the CodeSystem was last reviewed by the publisher (new)
            Comments

            Element CodeSystem.lastReviewDate has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.lastReviewDate has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.lastReviewDate: http://hl7.org/fhir/StructureDefinition/artifact-lastReviewDate. If specified, this date follows the original approval date.

            See guidance around (not) making local changes to elements here.

            Control0..1
            TypeExtension(Artifact Last Review Date) (Extension Type: date)
            Is Modifierfalse
            Must Supportfalse
            Summaryfalse
            Invariantsele-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())
            24. CodeSystem.extension:effectivePeriod
            Slice NameeffectivePeriod
            Definition

            R5: CodeSystem.effectivePeriod (new:Period)

            ShortR5: When the CodeSystem is expected to be used (new)
            Comments

            Element CodeSystem.effectivePeriod has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.effectivePeriod has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.effectivePeriod: http://hl7.org/fhir/StructureDefinition/artifact-effectivePeriod. The effective period for a CodeSystem determines when the content is applicable for usage and is independent of publication and review dates. For example, a system intended to be used for the year 2016 might be published in 2015.

            See guidance around (not) making local changes to elements here.

            Control0..1
            TypeExtension(Artifact Effective Period) (Extension Type: Period)
            Is Modifierfalse
            Must Supportfalse
            Summaryfalse
            Invariantsele-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())
            26. CodeSystem.extension:topic
            Slice Nametopic
            Definition

            R5: CodeSystem.topic (new:CodeableConcept)

            ShortR5: E.g. Education, Treatment, Assessment, etc (new)
            Comments

            Element CodeSystem.topic has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.topic has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.topic: http://hl7.org/fhir/StructureDefinition/artifact-topic. Element CodeSystem.topic has been flagged as deprecated. DEPRECATION NOTE: For consistency, implementations are encouraged to migrate to using the new 'topic' code in the useContext element. (I.e. useContext.code indicating http://terminology.hl7.org/CodeSystem/usage-context-type#topic and useContext.valueCodeableConcept indicating the topic)

            Control0..*
            TypeExtension(Artifact Topic) (Extension Type: CodeableConcept)
            Is Modifierfalse
            Must Supportfalse
            Summaryfalse
            Invariantsele-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())
            28. CodeSystem.extension:author
            Slice Nameauthor
            Definition

            R5: CodeSystem.author (new:ContactDetail)

            ShortR5: Who authored the CodeSystem (new)
            Comments

            Element CodeSystem.author has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.author has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.author: http://hl7.org/fhir/StructureDefinition/artifact-author.

            Control0..*
            TypeExtension(Artifact Author) (Extension Type: ContactDetail)
            Is Modifierfalse
            Must Supportfalse
            Summaryfalse
            Invariantsele-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())
            30. CodeSystem.extension:editor
            Slice Nameeditor
            Definition

            R5: CodeSystem.editor (new:ContactDetail)

            ShortR5: Who edited the CodeSystem (new)
            Comments

            Element CodeSystem.editor has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.editor has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.editor: http://hl7.org/fhir/StructureDefinition/artifact-editor.

            Control0..*
            TypeExtension(Artifact Editor) (Extension Type: ContactDetail)
            Is Modifierfalse
            Must Supportfalse
            Summaryfalse
            Invariantsele-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())
            32. CodeSystem.extension:reviewer
            Slice Namereviewer
            Definition

            R5: CodeSystem.reviewer (new:ContactDetail)

            ShortR5: Who reviewed the CodeSystem (new)
            Comments

            Element CodeSystem.reviewer has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.reviewer has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.reviewer: http://hl7.org/fhir/StructureDefinition/artifact-reviewer. See guidance around (not) making local changes to elements here.

            Control0..*
            TypeExtension(Artifact Reviewer) (Extension Type: ContactDetail)
            Is Modifierfalse
            Must Supportfalse
            Summaryfalse
            Invariantsele-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())
            34. CodeSystem.extension:endorser
            Slice Nameendorser
            Definition

            R5: CodeSystem.endorser (new:ContactDetail)

            ShortR5: Who endorsed the CodeSystem (new)
            Comments

            Element CodeSystem.endorser has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.endorser has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.endorser: http://hl7.org/fhir/StructureDefinition/artifact-endorser. See guidance around (not) making local changes to elements here.

            Control0..*
            TypeExtension(Artifact Endorser) (Extension Type: ContactDetail)
            Is Modifierfalse
            Must Supportfalse
            Summaryfalse
            Invariantsele-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())
            36. CodeSystem.extension:relatedArtifact
            Slice NamerelatedArtifact
            Definition

            R5: CodeSystem.relatedArtifact (new:RelatedArtifact)

            ShortR5: Additional documentation, citations, etc (new)
            Comments

            Element CodeSystem.relatedArtifact has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.relatedArtifact has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). An externally-defined extension that has been mapped as the representation of FHIR R5 element CodeSystem.relatedArtifact: http://hl7.org/fhir/StructureDefinition/artifact-relatedArtifact. Each related artifact is either an attachment, or a reference to another resource, but not both.

            Control0..*
            TypeExtension(Artifact related artifact) (Extension Type: RelatedArtifact)
            Is Modifierfalse
            Must Supportfalse
            Summaryfalse
            Invariantsele-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())
            38. CodeSystem.modifierExtension
            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 and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored
            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.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them
            Must Supportfalse
            Summaryfalse
            Requirements

            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.

            Alternate Namesextensions, user content
            Invariantsele-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())
            40. CodeSystem.url
            Definition

            An absolute URI that is used to identify this code system 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 code system is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the code system is stored on different servers. This is used in Coding.system.

            ShortCanonical identifier for this code system, represented as a URI (globally unique) (Coding.system)
            Comments

            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.

            Control0..1
            Typeuri
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Requirements

            Allows the code system to be referenced by a single globally unique identifier.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            42. CodeSystem.identifier
            Definition

            A formal identifier that is used to identify this code system when it is represented in other formats, or referenced in a specification, model, design or an instance.

            ShortAdditional identifier for the code system (business identifier)
            Comments

            Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier) data type, and can then identify this code system outside of FHIR, where it is not possible to use the logical URI. Note that HL7 defines at least three identifiers for many of its code systems - the FHIR canonical URL, the OID and the V2 Table 0396 mnemonic code.

            NoteThis is a business identifier, not a resource identifier (see discussion)
            Control0..*
            TypeIdentifier
            Is Modifierfalse
            Must Supportfalse
            Summarytrue
            Requirements

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

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            44. CodeSystem.version
            Definition

            The identifier that is used to identify this version of the code system when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the code system 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. This is used in Coding.version.

            ShortBusiness version of the code system (Coding.version)
            Comments

            There may be different code system 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 code system with the format [url]|[version].

            NoteThis is a business version Id, not a resource version Id (see discussion)
            Control0..1
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            46. CodeSystem.name
            Definition

            A natural language name identifying the code system. This name should be usable as an identifier for the module by machine processing applications such as code generation.

            ShortName for this code system (computer friendly)
            Comments

            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.

            Control0..1
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Requirements

            Support human navigation and code generation.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            48. CodeSystem.title
            Definition

            A short, descriptive, user-friendly title for the code system.

            ShortName for this code system (human friendly)
            Comments

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

            Control0..1
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            50. CodeSystem.status
            Definition

            The date (and optionally time) when the code system resource was created or revised.

            Shortdraft | active | retired | unknown
            Comments

            Allows filtering of code systems that are appropriate for use versus not.

            Control1..1
            BindingThe codes SHALL be taken from PublicationStatus
            (required to http://hl7.org/fhir/ValueSet/publication-status|4.3.0)

            The lifecycle status of an artifact.

            Typecode
            Is Modifiertrue because This is labeled as "Is Modifier" because applications should not use a retired {{title}} without due consideration
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            52. CodeSystem.experimental
            Definition

            A Boolean value to indicate that this code system is authored for testing purposes (or education/evaluation/marketing) and is not intended to be used for genuine usage.

            ShortFor testing purposes, not real usage
            Comments

            Allows filtering of code systems that are appropriate for use versus not.

            Control0..1
            Typeboolean
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Requirements

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

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            54. CodeSystem.date
            Definition

            The date (and optionally time) when the code system 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 code system changes.

            ShortDate last changed
            Comments

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

            Control0..1
            TypedateTime
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Alternate NamesRevision Date
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            56. CodeSystem.publisher
            Definition

            The name of the organization or individual that published the code system.

            ShortName of the publisher (organization or individual)
            Comments

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

            Control0..1
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Requirements

            Helps establish the "authority/credibility" of the code system. May also allow for contact.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            58. CodeSystem.contact
            Definition

            Contact details to assist a user in finding and communicating with the publisher.

            ShortContact details for the publisher
            Comments

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

            Control0..*
            TypeContactDetail
            Is Modifierfalse
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            60. CodeSystem.description
            Definition

            A free text natural language description of the code system from a consumer's perspective.

            ShortNatural language description of the code system
            Comments

            This description can be used to capture details such as why the code system 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 code system 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 code system is presumed to be the predominant language in the place the code system was created).

            Control0..1
            Typemarkdown
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summaryfalse
            Alternate NamesScope, Purpose
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            62. CodeSystem.useContext
            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 code system instances.

            ShortThe context that the content is intended to support
            Comments

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

            Control0..*
            TypeUsageContext
            Is Modifierfalse
            Must Supportfalse
            Summarytrue
            Requirements

            Assist in searching for appropriate content.

            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            64. CodeSystem.jurisdiction
            Definition

            A legal or geographic region in which the code system is intended to be used.

            ShortIntended jurisdiction for code system (if applicable)
            Comments

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

            Control0..*
            BindingUnless not suitable, these codes SHALL be taken from Jurisdiction ValueSet
            (extensible to http://hl7.org/fhir/ValueSet/jurisdiction|4.3.0)

            Countries and regions within which this artifact is targeted for use.

            TypeCodeableConcept
            Is Modifierfalse
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            66. CodeSystem.purpose
            Definition

            Explanation of why this code system is needed and why it has been designed as it has.

            ShortWhy this code system is defined
            Comments

            This element does not describe the usage of the code system. 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 code system.

            Control0..1
            Typemarkdown
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summaryfalse
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            68. CodeSystem.copyright
            Definition

            A copyright statement relating to the code system and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the code system.

            ShortUse and/or publishing restrictions
            Comments

            ... Sometimes, the copyright differs between the code system and the codes that are included. The copyright statement should clearly differentiate between these when required.

            Control0..1
            Typemarkdown
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summaryfalse
            Requirements

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

            Alternate NamesLicense, Restrictions
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            70. CodeSystem.caseSensitive
            Definition

            If code comparison is case sensitive when codes within this system are compared to each other.

            ShortIf code comparison is case sensitive
            Comments

            If this value is missing, then it is not specified whether a code system is case sensitive or not. When the rule is not known, Postel's law should be followed: produce codes with the correct case, and accept codes in any case. This element is primarily provided to support validation software.

            Control0..1
            Typeboolean
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            72. CodeSystem.valueSet
            Definition

            Canonical reference to the value set that contains the entire code system.

            ShortCanonical reference to the value set with entire code system
            Comments

            The definition of the value set SHALL include all codes from this code system and only codes from this code system, and it SHALL be immutable.

            Control0..1
            Typecanonical(ValueSet)
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            74. CodeSystem.hierarchyMeaning
            Definition

            The meaning of the hierarchy of concepts as represented in this resource.

            Shortgrouped-by | is-a | part-of | classified-with
            Comments

            Note that other representations might have a different hierarchy or none at all, and represent the information using properties.

            Control0..1
            BindingThe codes SHALL be taken from CodeSystemHierarchyMeaning
            (required to http://hl7.org/fhir/ValueSet/codesystem-hierarchy-meaning|4.3.0)

            The meaning of the hierarchy of concepts in a code system.

            Typecode
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            76. CodeSystem.compositional
            Definition

            The code system defines a compositional (post-coordination) grammar.

            ShortIf code system defines a compositional grammar
            Comments

            Note that the code system resource does not define what the compositional grammar is, only whether or not there is one.

            Control0..1
            Typeboolean
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Alternate Namesgrammar
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            78. CodeSystem.versionNeeded
            Definition

            This flag is used to signify that the code system does not commit to concept permanence across versions. If true, a version must be specified when referencing this code system.

            ShortIf definitions are not stable
            Comments

            Best practice is that code systems do not redefine concepts, or that if concepts are redefined, a new code system definition is created. But this is not always possible, so some code systems may be defined as 'versionNeeded'.

            Most code systems occasionally refine the displays defined for concepts between versions. Contexts in which the concept display values are validated may require that the version be specified for some code systems irrespective of the value of this property.

            Control0..1
            Typeboolean
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            80. CodeSystem.content
            Definition

            The extent of the content of the code system (the concepts and codes it defines) are represented in this resource instance.

            Shortnot-present | example | fragment | complete | supplement
            Control1..1
            BindingThe codes SHALL be taken from CodeSystemContentMode
            (required to http://hl7.org/fhir/ValueSet/codesystem-content-mode|4.3.0)

            The extent of the content of the code system (the concepts and codes it defines) are represented in a code system resource.

            Typecode
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            82. CodeSystem.supplements
            Definition

            The canonical URL of the code system that this code system supplement is adding designations and properties to.

            ShortCanonical URL of Code System this adds designations and properties to
            Comments

            The most common use of a code system supplement is to add additional language support.

            Control0..1
            Typecanonical(CodeSystem)
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            84. CodeSystem.count
            Definition

            The total number of concepts defined by the code system. Where the code system has a compositional grammar, the basis of this count is defined by the system steward.

            ShortTotal concepts in the code system
            Comments

            The count of concepts defined in this resource cannot be more than this value but may be less for several reasons - see the content element.

            Control0..1
            TypeunsignedInt
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            86. CodeSystem.filter
            Definition

            A filter that can be used in a value set compose statement when selecting concepts using a filter.

            ShortFilter that can be used in a value set
            Comments

            Note that filters defined in code systems usually require custom code on the part of any terminology engine that will make them available for use in value set filters. For this reason, they are generally only seen in high value published terminologies.

            Control0..*
            TypeBackboneElement
            Is Modifierfalse
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children unless an empty Parameters resource (hasValue() or (children().count() > id.count()) or $this is Parameters)
            88. CodeSystem.filter.id
            Definition

            Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

            ShortUnique id for inter-element referencing
            Control0..1
            Typestring
            Is Modifierfalse
            XML FormatIn the XML format, this property is represented as an attribute.
            Summaryfalse
            90. CodeSystem.filter.extension
            Definition

            May be used to represent additional information that is not part of the basic definition of the element. 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 can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

            ShortAdditional content defined by implementations
            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.

            Control0..*
            TypeExtension
            Is Modifierfalse
            Summaryfalse
            Alternate Namesextensions, user content
            Invariantsele-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())
            92. CodeSystem.filter.modifierExtension
            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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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 can 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.

            Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

            ShortExtensions that cannot be ignored even if unrecognized
            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.

            Control0..*
            TypeExtension
            Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
            Summarytrue
            Requirements

            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.

            Alternate Namesextensions, user content, modifiers
            Invariantsele-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())
            94. CodeSystem.filter.code
            Definition

            The code that identifies this filter when it is used as a filter in ValueSet.compose.include.filter.

            ShortCode that identifies the filter
            Control1..1
            Typecode
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            96. CodeSystem.filter.description
            Definition

            A description of how or why the filter is used.

            ShortHow or why the filter is used
            Control0..1
            Typestring
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            98. CodeSystem.filter.operator
            Definition

            A list of operators that can be used with the filter.

            Short= | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | exists
            Control1..*
            BindingThe codes SHALL be taken from FilterOperator
            (required to http://hl7.org/fhir/ValueSet/filter-operator|4.3.0)

            The kind of operation to perform as a part of a property based filter.

            Typecode
            Is Modifierfalse
            Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
            Must Supportfalse
            Summarytrue
            Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
            100. CodeSystem.filter.operator.id
            Definition

            unique id for the element within a resource (for internal references)

            Shortxml:id (or equivalent in JSON)
            Control0..1
            Typestring
            Is Modifierfalse
            XML FormatIn the XML format, this property is represented as an attribute.
            Summaryfalse
            102. CodeSystem.filter.operator.extension
            Definition

            An Extension

            ShortExtension
            Control0..*
            TypeExtension
            Is Modifierfalse
            Summaryfalse
            Invariantsele-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())
            SlicingThis element introduces a set of slices on CodeSystem.filter.operator.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
            • value @ url
            • 104. CodeSystem.filter.operator.extension:operator
              Slice Nameoperator
              Definition

              R5: CodeSystem.filter.operator

              ShortR5: = | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | child-of | descendent-leaf | exists
              Comments

              Element CodeSystem.filter.operator is mapped to FHIR R4B element CodeSystem.filter.operator as SourceIsBroaderThanTarget.

              Control0..*
              This element is affected by the following invariants: ele-1
              TypeExtension(R5: = | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | child-of | descendent-leaf | exists) (Extension Type: code)
              Is Modifierfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children unless an empty Parameters resource (hasValue() or (children().count() > id.count()) or $this is Parameters)
              ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
              106. CodeSystem.filter.operator.value
              Definition

              Primitive value for code

              ShortPrimitive value for code
              Control0..1
              Typecode
              Is Modifierfalse
              XML FormatIn the XML format, this property is represented as an attribute.
              Summaryfalse
              108. CodeSystem.filter.value
              Definition

              A description of what the value for the filter should be.

              ShortWhat to use for the value
              Control1..1
              Typestring
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Must Supportfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              110. CodeSystem.property
              Definition

              A property defines an additional slot through which additional information can be provided about a concept.

              ShortAdditional information supplied about each concept
              Control0..*
              TypeBackboneElement
              Is Modifierfalse
              Must Supportfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children unless an empty Parameters resource (hasValue() or (children().count() > id.count()) or $this is Parameters)
              112. CodeSystem.property.id
              Definition

              Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

              ShortUnique id for inter-element referencing
              Control0..1
              Typestring
              Is Modifierfalse
              XML FormatIn the XML format, this property is represented as an attribute.
              Summaryfalse
              114. CodeSystem.property.extension
              Definition

              May be used to represent additional information that is not part of the basic definition of the element. 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 can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

              ShortAdditional content defined by implementations
              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.

              Control0..*
              TypeExtension
              Is Modifierfalse
              Summaryfalse
              Alternate Namesextensions, user content
              Invariantsele-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())
              116. CodeSystem.property.modifierExtension
              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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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 can 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.

              Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

              ShortExtensions that cannot be ignored even if unrecognized
              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.

              Control0..*
              TypeExtension
              Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
              Summarytrue
              Requirements

              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.

              Alternate Namesextensions, user content, modifiers
              Invariantsele-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())
              118. CodeSystem.property.code
              Definition

              A code that is used to identify the property. The code is used internally (in CodeSystem.concept.property.code) and also externally, such as in property filters.

              ShortIdentifies the property on the concepts, and when referred to in operations
              Control1..1
              Typecode
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Must Supportfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              120. CodeSystem.property.uri
              Definition

              Reference to the formal meaning of the property. One possible source of meaning is the Concept Properties code system.

              ShortFormal identifier for the property
              Control0..1
              Typeuri
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Must Supportfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              122. CodeSystem.property.description
              Definition

              A description of the property- why it is defined, and how its value might be used.

              ShortWhy the property is defined, and/or what it conveys
              Control0..1
              Typestring
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Must Supportfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              124. CodeSystem.property.type
              Definition

              The type of the property value. Properties of type "code" contain a code defined by the code system (e.g. a reference to another defined concept).

              Shortcode | Coding | string | integer | boolean | dateTime | decimal
              Control1..1
              BindingThe codes SHALL be taken from PropertyType
              (required to http://hl7.org/fhir/ValueSet/concept-property-type|4.3.0)

              The type of a property value.

              Typecode
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Must Supportfalse
              Summarytrue
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              126. CodeSystem.concept
              Definition

              Concepts that are in the code system. The concept definitions are inherently hierarchical, but the definitions must be consulted to determine what the meanings of the hierarchical relationships are.

              ShortConcepts in the code system
              Comments

              If this is empty, it means that the code system resource does not represent the content of the code system.

              Control0..*
              TypeBackboneElement
              Is Modifierfalse
              Must Supportfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children unless an empty Parameters resource (hasValue() or (children().count() > id.count()) or $this is Parameters)
              128. CodeSystem.concept.id
              Definition

              Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

              ShortUnique id for inter-element referencing
              Control0..1
              Typestring
              Is Modifierfalse
              XML FormatIn the XML format, this property is represented as an attribute.
              Summaryfalse
              130. CodeSystem.concept.extension
              Definition

              May be used to represent additional information that is not part of the basic definition of the element. 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 can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

              ShortAdditional content defined by implementations
              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.

              Control0..*
              TypeExtension
              Is Modifierfalse
              Summaryfalse
              Alternate Namesextensions, user content
              Invariantsele-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())
              132. CodeSystem.concept.modifierExtension
              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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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 can 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.

              Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

              ShortExtensions that cannot be ignored even if unrecognized
              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.

              Control0..*
              TypeExtension
              Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
              Summarytrue
              Requirements

              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.

              Alternate Namesextensions, user content, modifiers
              Invariantsele-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())
              134. CodeSystem.concept.code
              Definition

              A code - a text symbol - that uniquely identifies the concept within the code system.

              ShortCode that identifies concept
              Control1..1
              Typecode
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Must Supportfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              136. CodeSystem.concept.display
              Definition

              A human readable string that is the recommended default way to present this concept to a user.

              ShortText to display to the user
              Control0..1
              Typestring
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Must Supportfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              138. CodeSystem.concept.definition
              Definition

              The formal definition of the concept. The code system resource does not make formal definitions required, because of the prevalence of legacy systems. However, they are highly recommended, as without them there is no formal meaning associated with the concept.

              ShortFormal definition
              Control0..1
              Typestring
              Is Modifierfalse
              Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
              Must Supportfalse
              Summaryfalse
              Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
              140. CodeSystem.concept.designation
              Definition

              Additional representations for the concept - other languages, aliases, specialized purposes, used for particular purposes, etc.

              ShortAdditional representations for the concept
              Comments

              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.

              Control0..*
              TypeBackboneElement
              Is Modifierfalse
              Must Supportfalse
              Summaryfalse
              Requirements

              Many concept definition systems support multiple representations, in multiple languages, and for multiple purposes.

              Invariantsele-1: All FHIR elements must have a @value or children unless an empty Parameters resource (hasValue() or (children().count() > id.count()) or $this is Parameters)
              142. CodeSystem.concept.designation.id
              Definition

              Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

              ShortUnique id for inter-element referencing
              Control0..1
              Typestring
              Is Modifierfalse
              XML FormatIn the XML format, this property is represented as an attribute.
              Summaryfalse
              144. CodeSystem.concept.designation.extension
              Definition

              An Extension

              ShortExtension
              Control0..*
              TypeExtension
              Is Modifierfalse
              Summaryfalse
              Invariantsele-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())
              SlicingThis element introduces a set of slices on CodeSystem.concept.designation.extension. The slices areUnordered and Open, and can be differentiated using the following discriminators:
              • value @ url
              • 146. CodeSystem.concept.designation.extension:additionalUse
                Slice NameadditionalUse
                Definition

                R5: CodeSystem.concept.designation.additionalUse (new:Coding)

                ShortR5: Additional ways how this designation would be used (new)
                Comments

                Element CodeSystem.concept.designation.additionalUse has a context of CodeSystem.concept.designation based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.concept.designation.additionalUse has no mapping targets in FHIR R4B. Typically, this is because the element has been added (is a new element). This was added rather than increasing the cardinality of .use to 0..* in order to maintain backward compatibility.

                Control0..*
                This element is affected by the following invariants: ele-1
                TypeExtension(R5: Additional ways how this designation would be used (new)) (Extension Type: Coding)
                Is Modifierfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children unless an empty Parameters resource (hasValue() or (children().count() > id.count()) or $this is Parameters)
                ext-1: Must have either extensions or value[x], not both (extension.exists() != value.exists())
                148. CodeSystem.concept.designation.modifierExtension
                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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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 can 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.

                Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                ShortExtensions that cannot be ignored even if unrecognized
                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.

                Control0..*
                TypeExtension
                Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                Summarytrue
                Requirements

                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.

                Alternate Namesextensions, user content, modifiers
                Invariantsele-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())
                150. CodeSystem.concept.designation.language
                Definition

                The language this designation is defined for.

                ShortHuman language of the designation
                Comments

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

                Control0..1
                BindingThe codes SHOULD be taken from CommonLanguages
                (preferred to http://hl7.org/fhir/ValueSet/languages|4.3.0)

                IETF language tag

                Additional BindingsPurpose
                AllLanguagesMax Binding
                Typecode
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                152. CodeSystem.concept.designation.use
                Definition

                A code that details how this designation would be used.

                ShortDetails how this designation would be used
                Comments

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

                Control0..1
                BindingUnless not suitable, these codes SHALL be taken from DesignationUse
                (extensible to http://hl7.org/fhir/ValueSet/designation-use|4.3.0)

                Details of how a designation would be used.

                TypeCoding
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                154. CodeSystem.concept.designation.value
                Definition

                The text value for this designation.

                ShortThe text value for this designation
                Control1..1
                Typestring
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                156. CodeSystem.concept.property
                Definition

                A property value for this concept.

                ShortProperty value for the concept
                Control0..*
                TypeBackboneElement
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children unless an empty Parameters resource (hasValue() or (children().count() > id.count()) or $this is Parameters)
                158. CodeSystem.concept.property.id
                Definition

                Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces.

                ShortUnique id for inter-element referencing
                Control0..1
                Typestring
                Is Modifierfalse
                XML FormatIn the XML format, this property is represented as an attribute.
                Summaryfalse
                160. CodeSystem.concept.property.extension
                Definition

                May be used to represent additional information that is not part of the basic definition of the element. 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 can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

                ShortAdditional content defined by implementations
                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.

                Control0..*
                TypeExtension
                Is Modifierfalse
                Summaryfalse
                Alternate Namesextensions, user content
                Invariantsele-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())
                162. CodeSystem.concept.property.modifierExtension
                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 in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. 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 can 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.

                Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself).

                ShortExtensions that cannot be ignored even if unrecognized
                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.

                Control0..*
                TypeExtension
                Is Modifiertrue because Modifier extensions are expected to modify the meaning or interpretation of the element that contains them
                Summarytrue
                Requirements

                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.

                Alternate Namesextensions, user content, modifiers
                Invariantsele-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())
                164. CodeSystem.concept.property.code
                Definition

                A code that is a reference to CodeSystem.property.code.

                ShortReference to CodeSystem.property.code
                Control1..1
                Typecode
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                166. CodeSystem.concept.property.value[x]
                Definition

                The value of this property.

                ShortValue of the property for this concept
                Control1..1
                TypeChoice of: code, Coding, string, integer, boolean, dateTime, decimal
                [x] NoteSeeChoice of Data Typesfor further information about how to use [x]
                Is Modifierfalse
                Primitive ValueThis primitive element may be present, or absent, or replaced by an extension
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))
                168. CodeSystem.concept.concept
                Definition

                Defines children of a concept to produce a hierarchy of concepts. The nature of the relationships is variable (is-a/contains/categorizes) - see hierarchyMeaning.

                ShortChild Concepts (is-a/contains/categorizes)
                Control0..*
                TypeSeettp://hl7.org/fhir/StructureDefinition/CodeSystem#CodeSystem.concept
                Is Modifierfalse
                Must Supportfalse
                Summaryfalse
                Invariantsele-1: All FHIR elements must have a @value or children (hasValue() or (children().count() > id.count()))