R6 Ballot (1st Draft)
TerminologyThis page is part of the FHIR Specification v6.0.0-ballot1: Release 6 Ballot (1st Draft) (see Ballot Notes). The current version is 5.0.0. For a full list of available versions, see the Directory of published versions 
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ShareableCodeSystem
<?xml version="1.0" encoding="UTF-8"?> <StructureDefinition xmlns="http://hl7.org/fhir"> <id value="shareablecodesystem"/> <text> <status value="generated"/> <div xmlns="http://www.w3.org/1999/xhtml">to do</div> </text> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm"> <valueInteger value="3"/> </extension> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"> <valueCode value="vocab"/> </extension> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"> <valueCode value="trial-use"/> </extension> <url value="http://hl7.org/fhir/StructureDefinition/shareablecodesystem"/> <identifier> <system value="urn:ietf:rfc:3986"/> <value value="urn:oid:2.16.840.1.113883.4.642.5.1135"/> </identifier> <version value="6.0.0-ballot1"/> <name value="ShareableCodeSystem"/> <title value="Shareable CodeSystem"/> <status value="draft"/> <experimental value="false"/> <date value="2020-12-28T16:55:11+11:00"/> <publisher value="HL7 International / Terminology Infrastructure"/> <contact> <telecom> <system value="url"/> <value value="http://www.hl7.org/Special/committees/Vocab"/> </telecom> </contact> <description value="Enforces the minimum information set for the code system metadata required by HL7 and other organizations that share and publish code systems"/> <fhirVersion value="6.0.0-ballot1"/> <mapping> <identity value="rim"/> <uri value="http://hl7.org/v3"/> <name value="RIM Mapping"/> </mapping> <mapping> <identity value="workflow"/> <uri value="http://hl7.org/fhir/workflow"/> <name value="Workflow Pattern"/> </mapping> <mapping> <identity value="w5"/> <uri value="http://hl7.org/fhir/fivews"/> <name value="FiveWs Pattern Mapping"/> </mapping> <mapping> <identity value="objimpl"/> <uri value="http://hl7.org/fhir/object-implementation"/> <name value="Object Implementation Information"/> </mapping> <kind value="resource"/> <abstract value="false"/> <type value="CodeSystem"/> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/> <derivation value="constraint"/> <snapshot> <element id="CodeSystem"> <path value="CodeSystem"/> <short value="Declares the existence of and describes a code system or code system supplement"/> <definition value="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."/> <min value="1"/> <max value="1"/> <base> <path value="CodeSystem"/> <min value="0"/> <max value="*"/> </base> <constraint> <key value="cnl-0"/> <severity value="warning"/> <human value="Name should be usable as an identifier for the module by machine processing applications such as code generation"/> <expression value="name.exists() implies name.matches('^[A-Z]([A-Za-z0-9_]){1,254}$')"/> <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/> </constraint> <constraint> <key value="csd-1"/> <severity value="error"/> <human value="Within a code system definition, all the codes SHALL be unique"/> <expression value="concept.exists() implies concept.code.combine(%resource.concept.descendants().concept.code).i sDistinct()"/> <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/> </constraint> <constraint> <key value="csd-2"/> <severity value="warning"/> <human value="If there is an explicit hierarchy, a hierarchyMeaning should be provided"/> <expression value="concept.concept.exists() implies hierarchyMeaning.exists()"/> <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/> </constraint> <constraint> <key value="csd-3"/> <severity value="warning"/> <human value="If there is an implicit hierarchy, a hierarchyMeaning should be provided"/> <expression value="concept.where(property.code = 'parent' or property.code = 'child').exists() implies hierarchyMeaning.exists()"/> <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/> </constraint> <constraint> <key value="csd-4"/> <severity value="error"/> <human value="If the code system content = supplement, it must nominate what it's a supplement for"/> <expression value="CodeSystem.content = 'supplement' implies CodeSystem.supplements.exists()"/> <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/> </constraint> <constraint> <key value="scs-1"/> <severity value="error"/> <human value="If a codesystem contains nested concepts, it must specify hierarchyMeaning"/> <expression value="concept.concept.exists() implies hierarchyMeaning.exists()"/> </constraint> <constraint> <key value="scs-2"/> <severity value="error"/> <human value="If a codesystem contains example, fragment, or complete content, it must have at least one concept"/> <expression value="content in ( 'example' | 'fragment' | 'complete' ) implies concept.exists()"/> </constraint> <mustSupport value="false"/> <isModifier value="false"/> <isSummary value="false"/> <mapping> <identity value="w5"/> <map value="conformance.behavior,conformance.terminology"/> </mapping> <mapping> <identity value="rim"/> <map value="N/A"/> </mapping> </element> <element id="CodeSystem.id"> <path value="CodeSystem.id"/> <short value="Logical id of this artifact"/> <definition value="The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes."/> <comment value="Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case."/> <min value="0"/> <max value="1"/> <base> <path value="Resource.id"/> <min value="0"/> <max value="1"/> </base> <type> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"> <valueUrl value="id"/> </extension> <code value="http://hl7.org/fhirpath/System.String"/> </type> <mustSupport value="false"/> <isModifier value="false"/> <isSummary value="true"/> </element> <element id="CodeSystem.meta"> <path value="CodeSystem.meta"/> <short value="Metadata about the resource"/> <definition value="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."/> <min value="0"/> <max value="1"/> <base> <path value="Resource.meta"/> <min value="0"/> <max value="1"/> </base> <type> <code value="Meta"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="false"/> <isModifier value="false"/> <isSummary value="true"/> </element> <element id="CodeSystem.implicitRules"> <path value="CodeSystem.implicitRules"/> <short value="A set of rules under which this content was created"/> <definition value="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."/> <comment value="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 its narrative along with other profiles, value sets, etc."/> <min value="0"/> <max value="1"/> <base> <path value="Resource.implicitRules"/> <min value="0"/> <max value="1"/> </base> <type> <code value="uri"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="false"/> <isModifier value="true"/> <isModifierReason value="This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies its meaning or interpretation"/> <isSummary value="true"/> </element> <element id="CodeSystem.language"> <path value="CodeSystem.language"/> <short value="Language of the resource content"/> <definition value="The base language in which the resource is written."/> <comment value="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)."/> <min value="0"/> <max value="1"/> <base> <path value="Resource.language"/> <min value="0"/> <max value="1"/> </base> <type> <code value="code"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="false"/> <isModifier value="false"/> <isSummary value="false"/> <binding> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="Language"/> </extension> <strength value="required"/> <description value="IETF language tag for a human language"/> <valueSet value="http://hl7.org/fhir/ValueSet/all-languages|6.0.0-ballot1"/> <additional> <purpose value="starter"/> <valueSet value="http://hl7.org/fhir/ValueSet/languages"/> </additional> </binding> </element> <element id="CodeSystem.text"> <path value="CodeSystem.text"/> <short value="Text summary of the resource, for human interpretation"/> <definition value="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."/> <comment value="Contained resources do not have a 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."/> <alias value="narrative"/> <alias value="html"/> <alias value="xhtml"/> <alias value="display"/> <min value="0"/> <max value="1"/> <base> <path value="DomainResource.text"/> <min value="0"/> <max value="1"/> </base> <type> <code value="Narrative"/> </type> <condition value="dom-6"/> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="false"/> <isModifier value="false"/> <isSummary value="false"/> <mapping> <identity value="rim"/> <map value="Act.text?"/> </mapping> </element> <element id="CodeSystem.contained"> <path value="CodeSystem.contained"/> <short value="Contained, inline Resources"/> <definition value="These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning."/> <comment value="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."/> <alias value="inline resources"/> <alias value="anonymous resources"/> <alias value="contained resources"/> <min value="0"/> <max value="*"/> <base> <path value="DomainResource.contained"/> <min value="0"/> <max value="*"/> </base> <type> <code value="Resource"/> </type> <condition value="dom-2"/> <condition value="dom-4"/> <condition value="dom-3"/> <condition value="dom-5"/> <mustSupport value="false"/> <isModifier value="false"/> <isSummary value="false"/> <mapping> <identity value="rim"/> <map value="N/A"/> </mapping> </element> <element id="CodeSystem.extension"> <path value="CodeSystem.extension"/> <slicing> <discriminator> <type value="value"/> <path value="url"/> </discriminator> <ordered value="false"/> <rules value="open"/> </slicing> <short value="Extension"/> <definition value="An Extension"/> <min value="0"/> <max value="*"/> <base> <path value="DomainResource.extension"/> <min value="0"/> <max value="*"/> </base> <type> <code value="Extension"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="false"/> <isModifier value="false"/> <isSummary value="false"/> </element> <element id="CodeSystem.extension:knowledgeRepresentationLevel"> <path value="CodeSystem.extension"/> <sliceName value="knowledgeRepresentationLevel"/> <short value="narrative | semi-structured | structured | executable"/> <definition value="Defines a knowledge representation level provided by this knowledge artifact."/> <min value="0"/> <max value="*"/> <base> <path value="DomainResource.extension"/> <min value="0"/> <max value="*"/> </base> <type> <code value="Extension"/> <profile value="http://hl7.org/fhir/StructureDefinition/cqf-knowledgeRepresentationLevel"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <constraint> <key value="ext-1"/> <severity value="error"/> <human value="Must have either extensions or value[x], not both"/> <expression value="extension.exists() != value.exists()"/> <source value="http://hl7.org/fhir/StructureDefinition/Extension"/> </constraint> <mustSupport value="true"/> <isModifier value="false"/> </element> <element id="CodeSystem.modifierExtension"> <path value="CodeSystem.modifierExtension"/> <short value="Extensions that cannot be ignored"/> <definition value="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 managable, 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)."/> <comment value="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."/> <requirements value="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](extensibility.html#modifierExtension)."/> <alias value="extensions"/> <alias value="user content"/> <min value="0"/> <max value="*"/> <base> <path value="DomainResource.modifierExtension"/> <min value="0"/> <max value="*"/> </base> <type> <code value="Extension"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="false"/> <isModifier value="true"/> <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them"/> <isSummary value="true"/> <mapping> <identity value="rim"/> <map value="N/A"/> </mapping> </element> <element id="CodeSystem.url"> <path value="CodeSystem.url"/> <short value="Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system)"/> <definition value="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 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](datatypes.html#Coding).system."/> <comment value="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](resource.html#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](resource.html#meta) element to indicate where the current master source of the resource can be found."/> <requirements value="Allows the code system to be referenced by a single globally unique identifier."/> <min value="1"/> <max value="1"/> <base> <path value="CodeSystem.url"/> <min value="0"/> <max value="1"/> </base> <type> <code value="uri"/> </type> <constraint> <key value="cnl-1"/> <severity value="warning"/> <human value="URL should not contain | or # - these characters make processing canonical references problematic"/> <expression value="exists() implies matches('^[^|# ]+$')"/> <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/> </constraint> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="true"/> <isModifier value="false"/> <isSummary value="true"/> <mapping> <identity value="w5"/> <map value="FiveWs.identifier"/> </mapping> </element> <element id="CodeSystem.identifier"> <path value="CodeSystem.identifier"/> <short value="Additional identifier for the code system (business identifier)"/> <definition value="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."/> <comment value="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."/> <requirements value="Allows externally provided and/or usable business identifiers to be easily associated with the module."/> <min value="0"/> <max value="*"/> <base> <path value="CodeSystem.identifier"/> <min value="0"/> <max value="*"/> </base> <type> <code value="Identifier"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="false"/> <isModifier value="false"/> <isSummary value="true"/> <mapping> <identity value="w5"/> <map value="FiveWs.identifier"/> </mapping> <mapping> <identity value="objimpl"/> <map value="no-gen-base"/> </mapping> </element> <element id="CodeSystem.version"> <path value="CodeSystem.version"/> <short value="Business version of the code system (Coding.version)"/> <definition value="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."/> <comment value="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]. The version SHOULD NOT contain a '#' - see [Business Version](resource.html# bv-format)."/> <min value="1"/> <max value="1"/> <base> <path value="CodeSystem.version"/> <min value="0"/> <max value="1"/> </base> <type> <code value="string"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="true"/> <isModifier value="false"/> <isSummary value="true"/> <mapping> <identity value="w5"/> <map value="FiveWs.version"/> </mapping> </element> <element id="CodeSystem.versionAlgorithm[x]"> <path value="CodeSystem.versionAlgorithm[x]"/> <short value="How to compare versions"/> <definition value="Indicates the mechanism used to compare versions to determine which CodeSystem is more current."/> <comment value="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."/> <min value="0"/> <max value="1"/> <base> <path value="CodeSystem.versionAlgorithm[x]"/> <min value="0"/> <max value="1"/> </base> <type> <code value="string"/> </type> <type> <code value="Coding"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="true"/> <isModifier value="false"/> <isSummary value="true"/> <binding> <strength value="extensible"/> <valueSet value="http://hl7.org/fhir/ValueSet/version-algorithm"/> </binding> </element> <element id="CodeSystem.name"> <path value="CodeSystem.name"/> <short value="Name for this code system (computer friendly)"/> <definition value="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."/> <comment value="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."/> <requirements value="Support human navigation and code generation."/> <min value="0"/> <max value="1"/> <base> <path value="CodeSystem.name"/> <min value="0"/> <max value="1"/> </base> <type> <code value="string"/> </type> <condition value="cnl-0"/> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="true"/> <isModifier value="false"/> <isSummary value="true"/> </element> <element id="CodeSystem.title"> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable"> <valueBoolean value="true"/> </extension> <path value="CodeSystem.title"/> <short value="Name for this code system (human friendly)"/> <definition value="A short, descriptive, user-friendly title for the code system."/> <comment value="This name does not need to be machine-processing friendly and may contain punctuation, white-space, etc."/> <min value="1"/> <max value="1"/> <base> <path value="CodeSystem.title"/> <min value="0"/> <max value="1"/> </base> <type> <code value="string"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="true"/> <isModifier value="false"/> <isSummary value="true"/> </element> <element id="CodeSystem.status"> <path value="CodeSystem.status"/> <short value="draft | active | retired | unknown"/> <definition value="The status of this code system. Enables tracking the life-cycle of the content."/> <comment value="Allows filtering of code systems that are appropriate for use versus not. See guidance around (not) making local changes to elements [here](canonicalresource.html#loca lization)."/> <min value="1"/> <max value="1"/> <base> <path value="CodeSystem.status"/> <min value="1"/> <max value="1"/> </base> <type> <code value="code"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="true"/> <isModifier value="true"/> <isModifierReason value="This is labeled as "Is Modifier" because applications should not use a retired CodeSystem without due consideration"/> <isSummary value="true"/> <binding> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="PublicationStatus"/> </extension> <strength value="required"/> <description value="The lifecycle status of an artifact."/> <valueSet value="http://hl7.org/fhir/ValueSet/publication-status|6.0.0-ballot1"/> </binding> <mapping> <identity value="w5"/> <map value="FiveWs.status"/> </mapping> </element> <element id="CodeSystem.experimental"> <path value="CodeSystem.experimental"/> <short value="For testing purposes, not real usage"/> <definition value="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."/> <comment value="Allows filtering of code systems that are appropriate for use versus not."/> <requirements value="Enables experimental content to be developed following the same lifecycle that would be used for a production-level code system."/> <min value="1"/> <max value="1"/> <base> <path value="CodeSystem.experimental"/> <min value="0"/> <max value="1"/> </base> <type> <code value="boolean"/> </type> <meaningWhenMissing value="If absent, this resource is treated as though it is not experimental."/> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="true"/> <isModifier value="false"/> <isSummary value="true"/> <mapping> <identity value="w5"/> <map value="FiveWs.class"/> </mapping> </element> <element id="CodeSystem.date"> <path value="CodeSystem.date"/> <short value="Date last changed"/> <definition value="The date (and optionally time) when the code system was last significantly changed. 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."/> <comment value="The date is often not tracked until the resource is published, but may be present on draft content. 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. See guidance around (not) making local changes to elements [here](canonicalresource.html#loca lization)."/> <alias value="Revision Date"/> <min value="0"/> <max value="1"/> <base> <path value="CodeSystem.date"/> <min value="0"/> <max value="1"/> </base> <type> <code value="dateTime"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="false"/> <isModifier value="false"/> <isSummary value="true"/> <mapping> <identity value="w5"/> <map value="FiveWs.recorded"/> </mapping> </element> <element id="CodeSystem.publisher"> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable"> <valueBoolean value="true"/> </extension> <path value="CodeSystem.publisher"/> <short value="Name of the publisher/steward (organization or individual)"/> <definition value="The name of the organization or individual responsible for the release and ongoing maintenance of the code system."/> <comment value="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."/> <requirements value="Helps establish the "authority/credibility" of the code system. May also allow for contact."/> <min value="0"/> <max value="1"/> <base> <path value="CodeSystem.publisher"/> <min value="0"/> <max value="1"/> </base> <type> <code value="string"/> </type> <constraint> <key value="ele-1"/> <severity value="error"/> <human value="All FHIR elements must have a @value or children"/> <expression value="hasValue() or (children().count() > id.count())"/> <source value="http://hl7.org/fhir/StructureDefinition/Element"/> </constraint> <mustSupport value="true"/> <isModifier value="false"/> <isSummary value="true"/> <mapping> <identity value="w5"/> <map value="FiveWs.witness"/> </mapping> </element> <element id="CodeSystem.contact"> <path value="CodeSystem.contact"/>