A code system resource specifies a set of codes drawn from one or more code systems.

A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content.

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.

This element is labelled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation.

An Extension

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

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 STU3. 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.

R5: CodeSystem.copyrightLabel (new:string)

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 STU3. 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.

R5: CodeSystem.approvalDate (new:date)

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 STU3. 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.

R5: CodeSystem.lastReviewDate (new:date)

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 STU3. 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.

R5: CodeSystem.effectivePeriod (new:Period)

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 STU3. 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.

R5: CodeSystem.topic (new:CodeableConcept)

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 STU3. 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)

R5: CodeSystem.author (new:ContactDetail)

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 STU3. 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.

R5: CodeSystem.editor (new:ContactDetail)

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 STU3. 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.

R5: CodeSystem.reviewer (new:ContactDetail)

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 STU3. 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.

R5: CodeSystem.endorser (new:ContactDetail)

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 STU3. 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.

R5: CodeSystem.relatedArtifact (new:RelatedArtifact)

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 STU3. 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.

R5: CodeSystem.supplements (new:canonical(CodeSystem))

Element CodeSystem.supplements has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.supplements has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element). The most common use of a code system supplement is to add additional language support.

May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

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.

The status of this code system. Enables tracking the life-cycle of the content.

Allows filtering of code systems that are appropriate for use vs. not.
This is labeled as "Is Modifier" because applications should not use a retired code system without due consideration.

The lifecycle status of a Value Set or Concept Map.

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.

Allows filtering of code system that are appropriate for use vs. not. This is labeled as "Is Modifier" because applications should not use an experimental code system in production.

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

How much of the content of the code system - the concepts and codes it defines - are represented in this resource.

How much of the content of the code system - the concepts and codes it defines - are represented in a code system resource

An Extension

R5: CodeSystem.content

Element CodeSystem.content is mapped to FHIR STU3 element CodeSystem.content as SourceIsBroaderThanTarget.

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

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 STU3. 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.

R5: CodeSystem.copyrightLabel (new:string)

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 STU3. 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.

R5: CodeSystem.approvalDate (new:date)

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 STU3. 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.

R5: CodeSystem.lastReviewDate (new:date)

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 STU3. 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.

R5: CodeSystem.effectivePeriod (new:Period)

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 STU3. 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.

R5: CodeSystem.topic (new:CodeableConcept)

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 STU3. 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)

R5: CodeSystem.author (new:ContactDetail)

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 STU3. 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.

R5: CodeSystem.editor (new:ContactDetail)

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 STU3. 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.

R5: CodeSystem.reviewer (new:ContactDetail)

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 STU3. 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.

R5: CodeSystem.endorser (new:ContactDetail)

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 STU3. 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.

R5: CodeSystem.relatedArtifact (new:RelatedArtifact)

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 STU3. 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.

R5: CodeSystem.supplements (new:canonical(CodeSystem))

Element CodeSystem.supplements has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.supplements has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element). The most common use of a code system supplement is to add additional language support.

R5: CodeSystem.contact additional types (ContactDetail) additional types from child elements (name, telecom)

Element CodeSystem.contact is mapped to FHIR STU3 element CodeSystem.contact as SourceIsBroaderThanTarget. The mappings for CodeSystem.contact do not cover the following types: ContactDetail. The mappings for CodeSystem.contact do not cover the following types based on type expansion: name, telecom. May be a web site, an email address, a telephone number, etc.

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

R5: CodeSystem.content

Element CodeSystem.content is mapped to FHIR STU3 element CodeSystem.content as SourceIsBroaderThanTarget.

R5: CodeSystem.filter.operator

Element CodeSystem.filter.operator is mapped to FHIR STU3 element CodeSystem.filter.operator as SourceIsBroaderThanTarget.

R5: CodeSystem.property.type

Element CodeSystem.property.type is mapped to FHIR STU3 element CodeSystem.property.type as SourceIsBroaderThanTarget.

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

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 STU3. 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.

R5: CodeSystem.concept.property.value[x] additional types (decimal)

Element CodeSystem.concept.property.value[x] is mapped to FHIR STU3 element CodeSystem.concept.property.value[x] as SourceIsBroaderThanTarget. The mappings for CodeSystem.concept.property.value[x] do not cover the following types: decimal. The target context CodeSystem.concept.property.value[x] is a choice-type element and cannot directly hold extensions. The context is moved up to parent element CodeSystem.concept.property.

A code system resource specifies a set of codes drawn from one or more code systems.

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

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

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

A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content.

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.

This element is labelled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies it's meaning or interpretation.

The base language in which the resource is written.

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).

Unless not suitable, these codes SHALL be taken from Common Languages
(extensible to http://hl7.org/fhir/ValueSet/languages|3.0.2)

A human language.

A human-readable narrative that contains a summary of the resource, and may be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety.

Contained resources do not have narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded in formation is added later.

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.

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.

An Extension

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

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 STU3. 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.

R5: CodeSystem.copyrightLabel (new:string)

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 STU3. 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.

R5: CodeSystem.approvalDate (new:date)

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 STU3. 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.

R5: CodeSystem.lastReviewDate (new:date)

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 STU3. 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.

R5: CodeSystem.effectivePeriod (new:Period)

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 STU3. 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.

R5: CodeSystem.topic (new:CodeableConcept)

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 STU3. 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)

R5: CodeSystem.author (new:ContactDetail)

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 STU3. 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.

R5: CodeSystem.editor (new:ContactDetail)

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 STU3. 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.

R5: CodeSystem.reviewer (new:ContactDetail)

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 STU3. 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.

R5: CodeSystem.endorser (new:ContactDetail)

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 STU3. 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.

R5: CodeSystem.relatedArtifact (new:RelatedArtifact)

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 STU3. 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.

R5: CodeSystem.supplements (new:canonical(CodeSystem))

Element CodeSystem.supplements has a context of CodeSystem based on following the parent source element upwards and mapping to CodeSystem. Element CodeSystem.supplements has no mapping targets in FHIR STU3. Typically, this is because the element has been added (is a new element). The most common use of a code system supplement is to add additional language support.

May be used to represent additional information that is not part of the basic definition of the resource, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

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.

An absolute URI that is used to identify this code system when it is referenced in a specification, model, design or an instance. This SHALL be a URL, SHOULD be globally unique, and SHOULD be an address at which this code system is (or will be) published. The URL SHOULD include the major version of the code system. For more information see Technical and Business Versions. This is used in [Coding]{datatypes.html#Coding}.system.

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.

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

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.

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

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

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]{datatypes.html#Coding}.version.

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 refrence to a particular business version of the code system with the format [url]|[version].

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.

The name is not expected to be globally unique. The name should be a simple alpha-numeric type name to ensure that it is computable friendly.

Support human navigation and code generation.

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

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

The status of this code system. Enables tracking the life-cycle of the content.

Allows filtering of code systems that are appropriate for use vs. not.
This is labeled as "Is Modifier" because applications should not use a retired code system without due consideration.

The lifecycle status of a Value Set or Concept Map.

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.

Allows filtering of code system that are appropriate for use vs. not. This is labeled as "Is Modifier" because applications should not use an experimental code system in production.

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

The date (and optionally time) when the code system was published. The date must change if and 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.

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.

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

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.

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

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

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

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

An Extension

R5: CodeSystem.contact additional types (ContactDetail) additional types from child elements (name, telecom)

Element CodeSystem.contact is mapped to FHIR STU3 element CodeSystem.contact as SourceIsBroaderThanTarget. The mappings for CodeSystem.contact do not cover the following types: ContactDetail. The mappings for CodeSystem.contact do not cover the following types based on type expansion: name, telecom. May be a web site, an email address, a telephone number, etc.

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

The name of an individual to contact.

If there is no named individual, the telecom information is for the organization as a whole.

The contact details for the individual (if a name was provided) or the organization.

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

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 profile is presumed to be the predominant language in the place the profile was created).

The content was developed with a focus and intent of supporting the contexts that are listed. These terms may be used to assist with indexing and searching for appropriate code system instances.

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

Assist in searching for appropriate content.

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

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

Countries and regions within which this artifact is targeted for use

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

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.

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.

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

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

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

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.

Canonical URL of value set that contains the entire code system.

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

The meaning of the hierarchy of concepts.

The meaning of the hierarchy of concepts in a code system

True If code system defines a post-composition grammar.

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

This flag is used to signify that the code system has not (or does not) maintain the definitions, and a version must be specified when referencing this code system.

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'.

How much of the content of the code system - the concepts and codes it defines - are represented in this resource.

How much of the content of the code system - the concepts and codes it defines - are represented in a code system resource

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

An Extension

R5: CodeSystem.content

Element CodeSystem.content is mapped to FHIR STU3 element CodeSystem.content as SourceIsBroaderThanTarget.

Primitive value for code

The total number of concepts defined by the code system. Where the code system has a compositional grammar, the count refers to the number of base (primitive) concepts.

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

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

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

May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

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.

May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

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.

The code that identifies this filter when it is used in the instance.

A description of how or why the filter is used.

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

The codes SHALL be taken from FilterOperator
(required to http://hl7.org/fhir/ValueSet/filter-operator|3.0.2)

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

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

An Extension

R5: CodeSystem.filter.operator

Element CodeSystem.filter.operator is mapped to FHIR STU3 element CodeSystem.filter.operator as SourceIsBroaderThanTarget.

Primitive value for code

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

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

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

May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

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.

May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

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.

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.

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

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

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

The type of a property value

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

An Extension

R5: CodeSystem.property.type

Element CodeSystem.property.type is mapped to FHIR STU3 element CodeSystem.property.type as SourceIsBroaderThanTarget.

Primitive value for code

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

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

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

May be used to represent additional information that is not part of the basic definition of the element. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension.

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.

May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

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.

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

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

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.

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

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

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

An Extension

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

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 STU3. 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.

May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

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.

The language this designation is defined for.

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

Unless not suitable, these codes SHALL be taken from Common Languages
(extensible to http://hl7.org/fhir/ValueSet/languages|3.0.2)

A human language.

A code that details how this designation would be used.

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

Details of how a designation would be used.

The text value for this designation.

A property value for this concept.

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

An Extension

R5: CodeSystem.concept.property.value[x] additional types (decimal)

Element CodeSystem.concept.property.value[x] is mapped to FHIR STU3 element CodeSystem.concept.property.value[x] as SourceIsBroaderThanTarget. The mappings for CodeSystem.concept.property.value[x] do not cover the following types: decimal. The target context CodeSystem.concept.property.value[x] is a choice-type element and cannot directly hold extensions. The context is moved up to parent element CodeSystem.concept.property.

May be used to represent additional information that is not part of the basic definition of the element, and that modifies the understanding of the element that contains it. Usually modifier elements provide negation or qualification. In order to make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.

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.

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

The value of this property.

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