Order Catalog Implementation Guide
1.0.0 - STU 1

Order Catalog Implementation Guide, published by HL7 International / Orders and Observations. This guide is not an authorized publication; it is the continuous build for version 1.0.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-order-catalog/ and changes regularly. See the Directory of published versions

## Resource Profile: Catalog - XML Profile

Page standards status: Trial-use | Maturity Level: 2

XML representation of the Catalog resource profile.

Raw xml | Download

    <StructureDefinition xmlns="http://hl7.org/fhir">
      <id value="Catalog"/>
      <text>
        <status value="additional"/>
        <div xmlns="http://www.w3.org/1999/xhtml">This profile constrains the Composition resource to
          represent a catalog of healthcare products/services/knowledge artefacts. The
          resource provides the global metadata of the catalog, such as the custodian, category,
          validity period and title, plus the references to the definitional resources
          representing the items belonging to this catalog.</div>
      </text>
      <extension
                 url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
        <valueCode value="oo"/>
      </extension>
      <url
           value="http://hl7.org/fhir/uv/order-catalog/StructureDefinition/Catalog"/>
      <identifier>
        <system value="urn:ietf:rfc:3986"/>
        <value value="urn:oid:2.16.840.1.113883.4.642.40.55.42.6"/>
      </identifier>
      <version value="1.0.0"/>
      <name value="Catalog"/>
      <title value="Catalog"/>
      <status value="active"/>
      <date value="2026-06-03T16:34:09+00:00"/>
      <publisher value="HL7 International / Orders and Observations"/>
      <contact>
        <telecom>
          <system value="url"/>
          <value value="http://www.hl7.org/Special/committees/orders"/>
        </telecom>
      </contact>
      <description
                   value="This profile of Composition retains the elements and extensions needed to characterize a catalog of healthare products / services / knowledge artefacts, with a set of general properties (name, category, owner, ...)"/>
      <jurisdiction>
        <coding>
          <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
          <code value="001"/>
        </coding>
      </jurisdiction>
      <purpose
               value="An instance of Composition conforming to this profile represents the general properties of a specific catalog of healthcare items (services/products/knowledge artefacts).
    Such a resource is referenced by the resources representing the individual items of the catalog."/>
      <fhirVersion value="5.0.0"/>
      <mapping>
        <identity value="workflow"/>
        <uri value="http://hl7.org/fhir/workflow"/>
        <name value="Workflow Pattern"/>
      </mapping>
      <mapping>
        <identity value="rim"/>
        <uri value="http://hl7.org/v3"/>
        <name value="RIM Mapping"/>
      </mapping>
      <mapping>
        <identity value="cda"/>
        <uri value="http://hl7.org/v3/cda"/>
        <name value="CDA (R2)"/>
      </mapping>
      <mapping>
        <identity value="fhirdocumentreference"/>
        <uri value="http://hl7.org/fhir/documentreference"/>
        <name value="FHIR DocumentReference"/>
      </mapping>
      <mapping>
        <identity value="w5"/>
        <uri value="http://hl7.org/fhir/fivews"/>
        <name value="FiveWs Pattern Mapping"/>
      </mapping>
      <kind value="resource"/>
      <abstract value="false"/>
      <type value="Composition"/>
      <baseDefinition
                      value="http://hl7.org/fhir/StructureDefinition/Composition"/>
      <derivation value="constraint"/>
      <snapshot>
        <extension
                   url="http://hl7.org/fhir/tools/StructureDefinition/snapshot-base-version">
          <valueString value="5.0.0"/>
        </extension>
        <element id="Composition">
          <path value="Composition"/>
          <short
                 value="A set of resources composed into a single coherent clinical statement with clinical attestation"/>
          <definition
                      value="A set of healthcare-related information that is assembled together into a single logical package that provides a single coherent statement of meaning, establishes its own context and that has clinical attestation with regard to who is making the statement. A Composition defines the structure and narrative content necessary for a document. However, a Composition alone does not constitute a document. Rather, the Composition must be the first entry in a Bundle where Bundle.type=document, and any other resources referenced from Composition must be included as subsequent entries in the Bundle (for example Patient, Practitioner, Encounter, etc.)."/>
          <comment
                   value="While the focus of this specification is on patient-specific clinical statements, this resource can also apply to other healthcare-related statements such as study protocol designs, healthcare invoices and other activities that are not necessarily patient-specific or clinical."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Composition"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <constraint>
            <key value="dom-2"/>
            <severity value="error"/>
            <human
                   value="If the resource is contained in another resource, it SHALL NOT contain nested Resources"/>
            <expression value="contained.contained.empty()"/>
            <source
                    value="http://hl7.org/fhir/StructureDefinition/DomainResource"/>
          </constraint>
          <constraint>
            <key value="dom-3"/>
            <severity value="error"/>
            <human
                   value="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"/>
            <expression
                        value="contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().ofType(canonical) | %resource.descendants().ofType(uri) | %resource.descendants().ofType(url))) or descendants().where(reference = '#').exists() or descendants().where(ofType(canonical) = '#').exists() or descendants().where(ofType(canonical) = '#').exists()).not()).trace('unmatched', id).empty()"/>
            <source
                    value="http://hl7.org/fhir/StructureDefinition/DomainResource"/>
          </constraint>
          <constraint>
            <key value="dom-4"/>
            <severity value="error"/>
            <human
                   value="If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated"/>
            <expression
                        value="contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()"/>
            <source
                    value="http://hl7.org/fhir/StructureDefinition/DomainResource"/>
          </constraint>
          <constraint>
            <key value="dom-5"/>
            <severity value="error"/>
            <human
                   value="If a resource is contained in another resource, it SHALL NOT have a security label"/>
            <expression value="contained.meta.security.empty()"/>
            <source
                    value="http://hl7.org/fhir/StructureDefinition/DomainResource"/>
          </constraint>
          <constraint>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice">
              <valueBoolean value="true"/>
            </extension>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice-explanation">
              <valueMarkdown
                             value="When a resource has no narrative, only systems that fully understand the data can display the resource to a human safely. Including a human readable representation in the resource makes for a much more robust eco-system and cheaper handling of resources by intermediary systems. Some ecosystems restrict distribution of resources to only those systems that do fully understand the resources, and as a consequence implementers may believe that the narrative is superfluous. However experience shows that such eco-systems often open up to new participants over time."/>
            </extension>
            <key value="dom-6"/>
            <severity value="warning"/>
            <human
                   value="A resource should have narrative for robust management"/>
            <expression value="text.`div`.exists()"/>
            <source
                    value="http://hl7.org/fhir/StructureDefinition/DomainResource"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map
                 value="Entity, Role, or Act,Document[classCode=&quot;DOC&quot; and moodCode=&quot;EVN&quot; and isNormalAct()]"/>
          </mapping>
          <mapping>
            <identity value="workflow"/>
            <map value="Event"/>
          </mapping>
          <mapping>
            <identity value="w5"/>
            <map value="infrastructure.documents"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value="ClinicalDocument"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="when described by DocumentReference"/>
          </mapping>
        </element>
        <element id="Composition.id">
          <path value="Composition.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="Composition.meta">
          <path value="Composition.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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Composition.implicitRules">
          <path value="Composition.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() &gt; 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="Composition.language">
          <path value="Composition.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() &gt; 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|5.0.0"/>
            <additional>
              <purpose value="starter"/>
              <valueSet value="http://hl7.org/fhir/ValueSet/languages|5.0.0"/>
            </additional>
          </binding>
        </element>
        <element id="Composition.text">
          <path value="Composition.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 &quot;clinically safe&quot; 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 &quot;text blob&quot; 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() &gt; 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="Composition.contained">
          <path value="Composition.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="Composition.extension">
          <path value="Composition.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() &gt; 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="false"/>
          <isModifier value="false"/>
          <isSummary value="false"/>
        </element>
        <element id="Composition.extension:ValidityPeriod">
          <path value="Composition.extension"/>
          <sliceName value="ValidityPeriod"/>
          <short value="Validity Period"/>
          <definition
                      value="The period in which the Composition is valid (for Order Catalog profiles), with optional start and end dates."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="DomainResource.extension"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Extension"/>
            <profile
                     value="http://hl7.org/fhir/uv/order-catalog/StructureDefinition/ValidityPeriod"/>
          </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() &gt; 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"/>
          <isSummary value="false"/>
        </element>
        <element id="Composition.modifierExtension">
          <path value="Composition.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](http://hl7.org/fhir/R5/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() &gt; 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="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="Composition.url">
          <path value="Composition.url"/>
          <short
                 value="Canonical identifier for this Composition, represented as a URI (globally unique)"/>
          <definition
                      value="An absolute URI that is used to identify this Composition 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 Composition is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the Composition is stored on different servers."/>
          <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."/>
          <requirements
                        value="Allows the Composition to be referenced by a single globally unique identifier."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.url"/>
            <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() &gt; 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>
        </element>
        <element id="Composition.identifier">
          <path value="Composition.identifier"/>
          <short value="Version-independent identifier for the Composition"/>
          <definition
                      value="A version-independent identifier for the Composition. This identifier stays constant as the composition is changed over time."/>
          <comment
                   value="Similar to ClinicalDocument/setId in CDA. See discussion in resource definition for how these relate."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Composition.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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="workflow"/>
            <map value="Event.identifier"/>
          </mapping>
          <mapping>
            <identity value="w5"/>
            <map value="FiveWs.identifier"/>
          </mapping>
          <mapping>
            <identity value="rim"/>
            <map value="Document.id / Document.setId"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".setId"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.identifier"/>
          </mapping>
        </element>
        <element id="Composition.version">
          <path value="Composition.version"/>
          <short
                 value="An explicitly assigned identifer of a variation of the content in the Composition"/>
          <definition
                      value="An explicitly assigned identifer of a variation of the content in the Composition."/>
          <comment
                   value="While each resource, including the composition itself, has its own version identifier, this is a formal identifier for the logical version of the Composition as a whole. It would remain constant if the resources were moved to a new server, and all got new individual resource versions, for example."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.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() &gt; 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.version"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".versionNumber"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.version"/>
          </mapping>
        </element>
        <element id="Composition.status">
          <path value="Composition.status"/>
          <short
                 value="registered | partial | preliminary | final | amended | corrected | appended | cancelled | entered-in-error | deprecated | unknown"/>
          <definition
                      value="The workflow/clinical status of this composition. The status is a marker for the clinical standing of the document."/>
          <comment
                   value="If a composition is marked as withdrawn, the compositions/documents in the series, or data from the composition or document series, should never be displayed to a user without being clearly marked as untrustworthy. The flag &quot;entered-in-error&quot; is why this element is labeled as a modifier of other elements.

    Some reporting work flows require that the original narrative of a final document never be altered; instead, only new narrative can be added. The composition resource has no explicit status for explicitly noting whether this business rule is in effect. This would be handled by an extension if required."/>
          <requirements
                        value="Need to be able to mark interim, amended, or withdrawn compositions or documents."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Composition.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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="true"/>
          <isModifierReason
                            value="This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid"/>
          <isSummary value="true"/>
          <binding>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
              <valueString value="CompositionStatus"/>
            </extension>
            <strength value="required"/>
            <description
                         value="The workflow/clinical status of the composition."/>
            <valueSet
                      value="http://hl7.org/fhir/ValueSet/composition-status|5.0.0"/>
          </binding>
          <mapping>
            <identity value="workflow"/>
            <map value="Event.status"/>
          </mapping>
          <mapping>
            <identity value="w5"/>
            <map value="FiveWs.status"/>
          </mapping>
          <mapping>
            <identity value="rim"/>
            <map
                 value="interim: .completionCode=&quot;IN&quot; &amp; ./statusCode[isNormalDatatype()]=&quot;active&quot;;  final: .completionCode=&quot;AU&quot; &amp;&amp;  ./statusCode[isNormalDatatype()]=&quot;complete&quot; and not(./inboundRelationship[typeCode=&quot;SUBJ&quot; and isNormalActRelationship()]/source[subsumesCode(&quot;ActClass#CACT&quot;) and moodCode=&quot;EVN&quot; and domainMember(&quot;ReviseComposition&quot;, code) and isNormalAct()]);  amended: .completionCode=&quot;AU&quot; &amp;&amp;  ./statusCode[isNormalDatatype()]=&quot;complete&quot; and ./inboundRelationship[typeCode=&quot;SUBJ&quot; and isNormalActRelationship()]/source[subsumesCode(&quot;ActClass#CACT&quot;) and moodCode=&quot;EVN&quot; and domainMember(&quot;ReviseComposition&quot;, code) and isNormalAct() and statusCode=&quot;completed&quot;];  withdrawn : .completionCode=NI &amp;&amp;  ./statusCode[isNormalDatatype()]=&quot;obsolete&quot;"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value="n/a"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.docStatus"/>
          </mapping>
        </element>
        <element id="Composition.type">
          <path value="Composition.type"/>
          <short value="The type of document - a Catalog"/>
          <definition value="The type of document - a Catalog."/>
          <comment
                   value="For Composition type, LOINC is ubiquitous and strongly endorsed by HL7. Most implementation guides will require a specific LOINC code, or use LOINC as an extensible binding."/>
          <requirements
                        value="Key metadata element describing the composition, used in searching/filtering."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Composition.type"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="CodeableConcept"/>
          </type>
          <patternCodeableConcept>
            <text value="Catalog"/>
          </patternCodeableConcept>
          <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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <binding>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
              <valueString value="DocumentType"/>
            </extension>
            <strength value="preferred"/>
            <description value="Type of a composition."/>
            <valueSet value="http://hl7.org/fhir/ValueSet/doc-typecodes|5.0.0"/>
          </binding>
          <mapping>
            <identity value="workflow"/>
            <map value="Event.code"/>
          </mapping>
          <mapping>
            <identity value="w5"/>
            <map value="FiveWs.class"/>
          </mapping>
          <mapping>
            <identity value="rim"/>
            <map value="./code"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".code"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.type"/>
          </mapping>
        </element>
        <element id="Composition.category">
          <path value="Composition.category"/>
          <short value="The Content of the section"/>
          <definition
                      value="The content (narrative and data) associated with the section."/>
          <requirements
                        value="Helps humans to assess whether the composition is of interest when viewing an index of compositions or documents."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Composition.category"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="CodeableConcept"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <binding>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
              <valueString value="CatalogType"/>
            </extension>
            <strength value="example"/>
            <description value="The type of catalog."/>
            <valueSet value="http://hl7.org/fhir/ValueSet/catalogType"/>
          </binding>
          <mapping>
            <identity value="w5"/>
            <map value="FiveWs.class"/>
          </mapping>
          <mapping>
            <identity value="rim"/>
            <map
                 value=".outboundRelationship[typeCode=&quot;COMP].target[classCode=&quot;LIST&quot;, moodCode=&quot;EVN&quot;].code"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value="n/a"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumenttReference.category"/>
          </mapping>
        </element>
        <element id="Composition.subject">
          <path value="Composition.subject"/>
          <short value="Who and/or what the composition is about"/>
          <definition
                      value="Who or what the composition is about. The composition can be about a person, (patient or healthcare practitioner), a device (e.g. a machine) or even a group of subjects (such as a document about a herd of livestock, or a set of patients that share a common exposure)."/>
          <comment value="For clinical documents, this is usually the patient."/>
          <requirements
                        value="Essential metadata for searching for the composition. Identifies who and/or what the composition/document is about."/>
          <min value="0"/>
          <max value="0"/>
          <base>
            <path value="Composition.subject"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Reference"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Resource"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="workflow"/>
            <map value="Event.subject"/>
          </mapping>
          <mapping>
            <identity value="w5"/>
            <map value="FiveWs.subject[x]"/>
          </mapping>
          <mapping>
            <identity value="rim"/>
            <map
                 value=".participation[typeCode=&quot;SBJ&quot;].role[typeCode=&quot;PAT&quot;]"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".recordTarget"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.subject"/>
          </mapping>
        </element>
        <element id="Composition.encounter">
          <path value="Composition.encounter"/>
          <short value="Context of the Composition"/>
          <definition
                      value="Describes the clinical encounter or type of care this documentation is associated with."/>
          <requirements
                        value="Provides context for the composition and supports searching."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.encounter"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Reference"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Encounter|5.0.0"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="workflow"/>
            <map value="Event.encounter"/>
          </mapping>
          <mapping>
            <identity value="w5"/>
            <map value="FiveWs.context"/>
          </mapping>
          <mapping>
            <identity value="rim"/>
            <map
                 value="unique(highest(./outboundRelationship[typeCode=&quot;SUBJ&quot; and isNormalActRelationship()], priorityNumber)/target[moodCode=&quot;EVN&quot; and classCode=(&quot;ENC&quot;, &quot;PCPR&quot;) and isNormalAct])"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".componentOf.encompassingEncounter"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.context"/>
          </mapping>
        </element>
        <element id="Composition.date">
          <path value="Composition.date"/>
          <short value="When the Catalog was created"/>
          <definition value="When the Catalog was created."/>
          <comment
                   value="The Last Modified Date on the composition may be after the date of the document was attested without being changed. This means that the date on an amended document is the date of the amendment, not the date of original authorship."/>
          <requirements
                        value="dateTime is used for tracking, organizing versions and searching. Note that this is the time of authoring this version of the Composition. When packaged in a document, [Bundle.timestamp](http://hl7.org/fhir/R5/bundle-definitions.html#Bundle.timestamp) is the date of packaging."/>
          <alias value="IssueDate"/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Composition.date"/>
            <min value="1"/>
            <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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="workflow"/>
            <map value="Event.occurrence[x]"/>
          </mapping>
          <mapping>
            <identity value="w5"/>
            <map value="FiveWs.done[x]"/>
          </mapping>
          <mapping>
            <identity value="rim"/>
            <map value=".effectiveTime[type=&quot;TS&quot;]"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".effectiveTime"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map
                 value="DocumentReference.content.attachment.date, DocumentReference.date"/>
          </mapping>
        </element>
        <element id="Composition.useContext">
          <path value="Composition.useContext"/>
          <short value="The context that the content is intended to support"/>
          <definition
                      value="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 Composition instances."/>
          <comment
                   value="When multiple useContexts are specified, there is no expectation that all or any of the contexts apply."/>
          <requirements value="Assist in searching for appropriate content."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Composition.useContext"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="UsageContext"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Composition.author">
          <path value="Composition.author"/>
          <short value="Who and/or what authored the composition"/>
          <definition
                      value="Identifies who is responsible for the information in the composition, not necessarily who typed it in."/>
          <requirements value="Identifies who is responsible for the content."/>
          <min value="1"/>
          <max value="*"/>
          <base>
            <path value="Composition.author"/>
            <min value="1"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Reference"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Practitioner|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/PractitionerRole|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Device|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Patient|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/RelatedPerson|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Organization|5.0.0"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="workflow"/>
            <map value="Event.performer"/>
          </mapping>
          <mapping>
            <identity value="w5"/>
            <map value="FiveWs.author"/>
          </mapping>
          <mapping>
            <identity value="rim"/>
            <map
                 value=".participation[typeCode=&quot;AUT&quot;].role[classCode=&quot;ASSIGNED&quot;]"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".author.assignedAuthor"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.author"/>
          </mapping>
        </element>
        <element id="Composition.name">
          <path value="Composition.name"/>
          <short value="Name for this Composition (computer friendly)"/>
          <definition
                      value="A natural language name identifying the {{title}}. 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="Composition.name"/>
            <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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
        </element>
        <element id="Composition.title">
          <path value="Composition.title"/>
          <short value="Human Readable name/title"/>
          <definition value="Official human-readable label for the composition."/>
          <comment
                   value="For many compositions, the title is the same as the text or a display name of Composition.type (e.g. a &quot;consultation&quot; or &quot;progress note&quot;). Note that CDA does not make title mandatory, but there are no known cases where it is useful for title to be omitted, so it is mandatory here. Feedback on this requirement is welcome during the trial use period."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Composition.title"/>
            <min value="1"/>
            <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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="./title"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".title"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map
                 value="DocumentReference.description, DocumentReference.content.attachment.title"/>
          </mapping>
        </element>
        <element id="Composition.note">
          <path value="Composition.note"/>
          <short value="For any additional notes"/>
          <definition value="For any additional notes."/>
          <comment
                   value="A comment, general note or annotation not coded elsewhere."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Composition.note"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Annotation"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="false"/>
        </element>
        <element id="Composition.attester">
          <path value="Composition.attester"/>
          <short value="Attests to accuracy of composition"/>
          <definition
                      value="A participant who has attested to the accuracy of the composition/document."/>
          <comment value="Only list each attester once."/>
          <requirements
                        value="Identifies responsibility for the accuracy of the composition content."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Composition.attester"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </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() &gt; 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=".participation[typeCode=&quot;AUTHEN&quot;].role[classCode=&quot;ASSIGNED&quot;]"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".authenticator/.legalAuthenticator"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.attester"/>
          </mapping>
        </element>
        <element id="Composition.attester.id">
          <path value="Composition.attester.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <condition value="ele-1"/>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Composition.attester.extension">
          <path value="Composition.attester.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="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 managable, 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."/>
          <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."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.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() &gt; 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>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Composition.attester.modifierExtension">
          <path value="Composition.attester.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="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 managable, 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)."/>
          <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](http://hl7.org/fhir/R5/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.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() &gt; 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>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element id="Composition.attester.mode">
          <path value="Composition.attester.mode"/>
          <short value="personal | professional | legal | official"/>
          <definition value="The type of attestation the authenticator offers."/>
          <requirements
                        value="Indicates the level of authority of the attestation."/>
          <min value="1"/>
          <max value="1"/>
          <base>
            <path value="Composition.attester.mode"/>
            <min value="1"/>
            <max value="1"/>
          </base>
          <type>
            <code value="CodeableConcept"/>
          </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() &gt; 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="CompositionAttestationMode"/>
            </extension>
            <strength value="preferred"/>
            <description
                         value="The way in which a person authenticated a composition."/>
            <valueSet
                      value="http://hl7.org/fhir/ValueSet/composition-attestation-mode|5.0.0"/>
          </binding>
          <mapping>
            <identity value="rim"/>
            <map value="unique(./modeCode)"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value="implied by .authenticator/.legalAuthenticator"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.attester.mode"/>
          </mapping>
        </element>
        <element id="Composition.attester.time">
          <path value="Composition.attester.time"/>
          <short value="When the composition was attested"/>
          <definition value="When the composition was attested by the party."/>
          <requirements
                        value="Identifies when the information in the composition was deemed accurate.  (Things may have changed since then.)."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.attester.time"/>
            <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() &gt; 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="./time[type=&quot;TS&quot; and isNormalDatatype()]"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".authenticator.time"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.attester.time"/>
          </mapping>
        </element>
        <element id="Composition.attester.party">
          <path value="Composition.attester.party"/>
          <short value="Who attested the composition"/>
          <definition value="Who attested the composition in the specified way."/>
          <requirements
                        value="Identifies who has taken on the responsibility for accuracy of the composition content."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.attester.party"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Reference"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Patient|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/RelatedPerson|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Practitioner|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/PractitionerRole|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Organization|5.0.0"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="w5"/>
            <map value="FiveWs.witness"/>
          </mapping>
          <mapping>
            <identity value="rim"/>
            <map
                 value="./role[classCode=&quot;ASSIGNED&quot; and isNormalRole]/player[determinerCode=&quot;INST&quot; and classCode=(&quot;DEV&quot;, &quot;PSN&quot;) and isNormalEntity()] or ./role[classCode=&quot;ASSIGNED&quot; and isNormalRole and not(player)]/scoper[determinerCode=&quot;INST&quot; and classCode=&quot;ORG&quot; and isNormalEntity()]"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".authenticator.assignedEnttty"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.attester.party"/>
          </mapping>
        </element>
        <element id="Composition.custodian">
          <path value="Composition.custodian"/>
          <short value="Organization which maintains the composition"/>
          <definition
                      value="Identifies the organization or group who is responsible for ongoing maintenance of and access to the composition/document information."/>
          <comment
                   value="This is useful when documents are derived from a composition - provides guidance for how to get the latest version of the document. This is optional because this is sometimes not known by the authoring system, and can be inferred by context. However, it is important that this information be known when working with a derived document, so providing a custodian is encouraged."/>
          <requirements
                        value="Identifies where to go to find the current version, where to report issues, etc."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.custodian"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Reference"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Organization|5.0.0"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map
                 value=".participation[typeCode=&quot;RCV&quot;].role[classCode=&quot;CUST&quot;].scoper[classCode=&quot;ORG&quot; and determinerCode=&quot;INST&quot;]"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".custodian.assignedCustodian"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.custodian"/>
          </mapping>
        </element>
        <element id="Composition.relatesTo">
          <path value="Composition.relatesTo"/>
          <short value="Relationships to other compositions/documents"/>
          <definition
                      value="Relationships that this composition has with other compositions or documents that already exist."/>
          <comment
                   value="To reference (using relatesTo) a Bundle of type &quot;document&quot; or another Composition where you only have the identifier, use a resourceReference with an identifier.\
    When a Composition is an alternate representation of another type of document e.g. CDA, the other document could be referenced in a DocumentReference resource.
    Here is an example of using relatesTo to reference another Bundle of type &quot;document&quot; or Composition where you only have the identifier:
    ```
    &quot;relatesTo&quot;: [{
      &quot;type&quot;: &quot;replaces&quot;,
      &quot;resourceReference&quot;: {
        &quot;identifier&quot;: {
          &quot;system&quot;: &quot;...&quot;,
          &quot;value&quot;: &quot;...&quot;
        }
      }
    }]
    ```"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Composition.relatesTo"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="RelatedArtifact"/>
          </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() &gt; 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=".outboundRelationship"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".relatedDocument"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.relatesTo"/>
          </mapping>
        </element>
        <element id="Composition.event">
          <path value="Composition.event"/>
          <short value="The clinical service(s) being documented"/>
          <definition
                      value="The clinical service, such as a colonoscopy or an appendectomy, being documented."/>
          <comment
                   value="The event needs to be consistent with the type element, though can provide further information if desired."/>
          <requirements
                        value="Provides context for the composition and creates a linkage between a resource describing an event and the composition created describing the event."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Composition.event"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map
                 value="outboundRelationship[typeCode=&quot;SUBJ&quot;].target[classCode&lt;'ACT']"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".documentationOf.serviceEvent"/>
          </mapping>
        </element>
        <element id="Composition.event.id">
          <path value="Composition.event.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <condition value="ele-1"/>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Composition.event.extension">
          <path value="Composition.event.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="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 managable, 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."/>
          <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."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.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() &gt; 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>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Composition.event.modifierExtension">
          <path value="Composition.event.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="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 managable, 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)."/>
          <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](http://hl7.org/fhir/R5/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.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() &gt; 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>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element id="Composition.event.period">
          <path value="Composition.event.period"/>
          <short value="The period covered by the documentation"/>
          <definition
                      value="The period of time covered by the documentation. There is no assertion that the documentation is a complete representation for this period, only that it documents events during this time."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.event.period"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Period"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value=".effectiveTime"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".effectiveTime"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.period"/>
          </mapping>
        </element>
        <element id="Composition.event.detail">
          <path value="Composition.event.detail"/>
          <short
                 value="The event(s) being documented, as code(s), reference(s), or both"/>
          <definition
                      value="Represents the main clinical acts, such as a colonoscopy or an appendectomy, being documented. In some cases, the event is inherent in the typeCode, such as a &quot;History and Physical Report&quot; in which case the procedure being documented is necessarily a &quot;History and Physical&quot; act. The events may be included as a code or as a reference to an other resource."/>
          <comment
                   value="An event can further specialize the act inherent in the typeCode, such as where it is simply &quot;Procedure Report&quot; and the procedure was a &quot;colonoscopy&quot;. If one or more events are included, they SHALL NOT conflict with the values inherent in the classCode, practiceSettingCode or typeCode, as such a conflict would create an ambiguous situation. This short list of codes is provided to be used as key words for certain types of queries."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Composition.event.detail"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="CodeableReference"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Resource|5.0.0"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="true"/>
          <binding>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
              <valueString value="DocumentEventType"/>
            </extension>
            <strength value="example"/>
            <description
                         value="This list of codes represents the main clinical acts being documented."/>
            <valueSet value="http://terminology.hl7.org/ValueSet/v3-ActCode"/>
          </binding>
          <mapping>
            <identity value="rim"/>
            <map value=".outboundRelationship[typeCode=&quot;SUBJ&quot;].target"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value="n/a"/>
          </mapping>
          <mapping>
            <identity value="fhirdocumentreference"/>
            <map value="DocumentReference.event"/>
          </mapping>
        </element>
        <element id="Composition.section">
          <path value="Composition.section"/>
          <short value="Composition is broken into sections"/>
          <definition
                      value="The root of the sections that make up the composition."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Composition.section"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="BackboneElement"/>
          </type>
          <constraint>
            <key value="cmp-1"/>
            <severity value="error"/>
            <human
                   value="A section must contain at least one of text, entries, or sub-sections"/>
            <expression
                        value="text.exists() or entry.exists() or section.exists()"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Composition"/>
          </constraint>
          <constraint>
            <key value="cmp-2"/>
            <severity value="error"/>
            <human value="A section can only have an emptyReason if it is empty"/>
            <expression value="emptyReason.empty() or entry.empty()"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Composition"/>
          </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() &gt; 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="./outboundRelationship[typeCode=&quot;COMP&quot; and isNormalActRelationship()]/target[moodCode=&quot;EVN&quot; and classCode=&quot;DOCSECT&quot; and isNormalAct]"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".component.structuredBody.component.section"/>
          </mapping>
        </element>
        <element id="Composition.section.id">
          <path value="Composition.section.id"/>
          <representation value="xmlAttr"/>
          <short value="Unique id for inter-element referencing"/>
          <definition
                      value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Element.id"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
              <valueUrl value="string"/>
            </extension>
            <code value="http://hl7.org/fhirpath/System.String"/>
          </type>
          <condition value="ele-1"/>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Composition.section.extension">
          <path value="Composition.section.extension"/>
          <short value="Additional content defined by implementations"/>
          <definition
                      value="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 managable, 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."/>
          <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."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Element.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() &gt; 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>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="rim"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Composition.section.modifierExtension">
          <path value="Composition.section.modifierExtension"/>
          <short value="Extensions that cannot be ignored even if unrecognized"/>
          <definition
                      value="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 managable, 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)."/>
          <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](http://hl7.org/fhir/R5/extensibility.html#modifierExtension)."/>
          <alias value="extensions"/>
          <alias value="user content"/>
          <alias value="modifiers"/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="BackboneElement.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() &gt; 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>
          <isModifier value="true"/>
          <isModifierReason
                            value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
          <isSummary value="true"/>
          <mapping>
            <identity value="rim"/>
            <map value="N/A"/>
          </mapping>
        </element>
        <element id="Composition.section.title">
          <path value="Composition.section.title"/>
          <short value="Label for section (e.g. for ToC)"/>
          <definition
                      value="The label for this particular section.  This will be part of the rendered content for the document, and is often used to build a table of contents."/>
          <comment
                   value="The title identifies the section for a human reader. The title must be consistent with the narrative of the resource that is the target of the section.content reference. Generally, sections SHOULD have titles, but in some documents, it is unnecessary or inappropriate. Typically, this is where a section has subsections that have their own adequately distinguishing title,  or documents that only have a single section. Most Implementation Guides will make section title to be a required element."/>
          <requirements
                        value="Section headings are often standardized for different types of documents.  They give guidance to humans on how the document is organized."/>
          <alias value="header"/>
          <alias value="label"/>
          <alias value="caption"/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.section.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() &gt; 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="./title"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".title"/>
          </mapping>
        </element>
        <element id="Composition.section.code">
          <path value="Composition.section.code"/>
          <short value="Classification of section (recommended)"/>
          <definition
                      value="A code identifying the kind of content contained within the section. This must be consistent with the section title."/>
          <comment
                   value="The code identifies the section for an automated processor of the document. This is particularly relevant when using profiles to control the structure of the document.

    If the section has content (instead of sub-sections), the section.code does not change the meaning or interpretation of the resource that is the content of the section in the comments for the section.code."/>
          <requirements
                        value="Provides computable standardized labels to topics within the document."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.section.code"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="CodeableConcept"/>
          </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() &gt; 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="CompositionSectionType"/>
            </extension>
            <strength value="example"/>
            <description
                         value="Classification of a section of a composition/document."/>
            <valueSet
                      value="http://hl7.org/fhir/ValueSet/doc-section-codes|5.0.0"/>
          </binding>
          <mapping>
            <identity value="rim"/>
            <map value="./code"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".code"/>
          </mapping>
        </element>
        <element id="Composition.section.author">
          <path value="Composition.section.author"/>
          <short value="Who and/or what authored the section"/>
          <definition
                      value="Identifies who is responsible for the information in this section, not necessarily who typed it in."/>
          <requirements value="Identifies who is responsible for the content."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Composition.section.author"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Reference"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Practitioner|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/PractitionerRole|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Device|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Patient|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/RelatedPerson|5.0.0"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Organization|5.0.0"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="w5"/>
            <map value="FiveWs.author"/>
          </mapping>
          <mapping>
            <identity value="rim"/>
            <map
                 value=".participation[typeCode=&quot;AUT&quot;].role[classCode=&quot;ASSIGNED&quot;]"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".author.assignedAuthor"/>
          </mapping>
        </element>
        <element id="Composition.section.focus">
          <path value="Composition.section.focus"/>
          <short
                 value="Who/what the section is about, when it is not about the subject of composition"/>
          <definition
                      value="The actual focus of the section when it is not the subject of the composition, but instead represents something or someone associated with the subject such as (for a patient subject) a spouse, parent, fetus, or donor. If not focus is specified, the focus is assumed to be focus of the parent section, or, for a section in the Composition itself, the subject of the composition. Sections with a focus SHALL only include resources where the logical subject (patient, subject, focus, etc.) matches the section focus, or the resources have no logical subject (few resources)."/>
          <comment
                   value="Typically, sections in a doument are about the subject of the document, whether that is a  patient, or group of patients, location, or device, or whatever. For some kind of documents, some sections actually contain data about related entities. Typical examples are  a section in a newborn discharge summary concerning the mother, or family history documents, with a section about each family member, though there are many other examples."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.section.focus"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Reference"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Resource|5.0.0"/>
          </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() &gt; id.count())"/>
            <source value="http://hl7.org/fhir/StructureDefinition/Element"/>
          </constraint>
          <mustSupport value="false"/>
          <isModifier value="false"/>
          <isSummary value="false"/>
          <mapping>
            <identity value="cda"/>
            <map
                 value=".subject? (CDA did not differentiate between subject and focus)"/>
          </mapping>
        </element>
        <element id="Composition.section.text">
          <path value="Composition.section.text"/>
          <short value="Text summary of the section, for human interpretation"/>
          <definition
                      value="A human-readable narrative that contains the attested content of the section, 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 &quot;clinically safe&quot; for a human to just read the narrative."/>
          <comment
                   value="Document profiles may define what content should be represented in the narrative to ensure clinical safety."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.section.text"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="Narrative"/>
          </type>
          <condition value="cmp-1"/>
          <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() &gt; 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=".text"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".text"/>
          </mapping>
        </element>
        <element id="Composition.section.orderedBy">
          <path value="Composition.section.orderedBy"/>
          <short value="Order of section entries"/>
          <definition
                      value="Specifies the order applied to the items in the section entries."/>
          <comment
                   value="Applications SHOULD render ordered lists in the order provided, but MAY allow users to re-order based on their own preferences as well. If there is no order specified, the order is unknown, though there may still be some order."/>
          <requirements
                        value="Important for presentation and rendering.  Lists may be sorted to place more important information first or to group related entries."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.section.orderedBy"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="CodeableConcept"/>
          </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() &gt; 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="SectionEntryOrder"/>
            </extension>
            <strength value="preferred"/>
            <description value="What order applies to the items in the entry."/>
            <valueSet value="http://hl7.org/fhir/ValueSet/list-order|5.0.0"/>
          </binding>
          <mapping>
            <identity value="rim"/>
            <map
                 value=".outboundRelationship[typeCode=COMP].sequenceNumber &gt; 1"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Composition.section.entry">
          <path value="Composition.section.entry"/>
          <short value="A reference to data that supports this section"/>
          <definition
                      value="A reference to the actual resource from which the narrative in the section is derived."/>
          <comment
                   value="If there are no entries in the list, an emptyReason SHOULD be provided."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Composition.section.entry"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <type>
            <code value="Reference"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Resource|5.0.0"/>
          </type>
          <condition value="cmp-1"/>
          <condition value="cmp-2"/>
          <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() &gt; 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=".outboundRelationship[typeCode=COMP] or  .participation[typeCode=SBJ]"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".entry"/>
          </mapping>
        </element>
        <element id="Composition.section.emptyReason">
          <path value="Composition.section.emptyReason"/>
          <short value="Why the section is empty"/>
          <definition
                      value="If the section is empty, why the list is empty. An empty section typically has some text explaining the empty reason."/>
          <comment
                   value="The various reasons for an empty section make a significant interpretation to its interpretation. Note that this code is for use when the entire section content has been suppressed, and not for when individual items are omitted - implementers may consider using a text note or a flag on an entry in these cases."/>
          <requirements
                        value="Allows capturing things like &quot;none exist&quot; or &quot;not asked&quot; which can be important for most lists."/>
          <min value="0"/>
          <max value="1"/>
          <base>
            <path value="Composition.section.emptyReason"/>
            <min value="0"/>
            <max value="1"/>
          </base>
          <type>
            <code value="CodeableConcept"/>
          </type>
          <condition value="cmp-2"/>
          <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() &gt; 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="SectionEmptyReason"/>
            </extension>
            <strength value="preferred"/>
            <description value="If a section is empty, why it is empty."/>
            <valueSet
                      value="http://hl7.org/fhir/ValueSet/list-empty-reason|5.0.0"/>
          </binding>
          <mapping>
            <identity value="rim"/>
            <map
                 value=".inboundRelationship[typeCode=SUBJ,code&lt;ListEmptyReason].value[type=CD]"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value="n/a"/>
          </mapping>
        </element>
        <element id="Composition.section.section">
          <path value="Composition.section.section"/>
          <short value="Nested Section"/>
          <definition value="A nested sub-section within this section."/>
          <comment
                   value="Nested sections are primarily used to help human readers navigate to particular portions of the document."/>
          <min value="0"/>
          <max value="*"/>
          <base>
            <path value="Composition.section.section"/>
            <min value="0"/>
            <max value="*"/>
          </base>
          <contentReference
                            value="http://hl7.org/fhir/StructureDefinition/Composition#Composition.section"/>
          <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() &gt; 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="./outboundRelationship[typeCode=&quot;COMP&quot; and isNormalActRelationship()]/target[moodCode=&quot;EVN&quot; and classCode=&quot;DOCSECT&quot; and isNormalAct]"/>
          </mapping>
          <mapping>
            <identity value="cda"/>
            <map value=".component.section"/>
          </mapping>
        </element>
      </snapshot>
      <differential>
        <element id="Composition">
          <path value="Composition"/>
        </element>
        <element id="Composition.extension:ValidityPeriod">
          <path value="Composition.extension"/>
          <sliceName value="ValidityPeriod"/>
          <type>
            <code value="Extension"/>
            <profile
                     value="http://hl7.org/fhir/uv/order-catalog/StructureDefinition/ValidityPeriod"/>
          </type>
          <mustSupport value="true"/>
        </element>
        <element id="Composition.type">
          <path value="Composition.type"/>
          <short value="The type of document - a Catalog"/>
          <definition value="The type of document - a Catalog."/>
          <min value="1"/>
          <max value="1"/>
          <type>
            <code value="CodeableConcept"/>
          </type>
          <patternCodeableConcept>
            <text value="Catalog"/>
          </patternCodeableConcept>
        </element>
        <element id="Composition.category">
          <path value="Composition.category"/>
          <short value="The Content of the section"/>
          <definition
                      value="The content (narrative and data) associated with the section."/>
          <min value="1"/>
          <max value="1"/>
          <type>
            <code value="CodeableConcept"/>
          </type>
          <binding>
            <extension
                       url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
              <valueString value="CatalogType"/>
            </extension>
            <strength value="example"/>
            <description value="The type of catalog."/>
            <valueSet value="http://hl7.org/fhir/ValueSet/catalogType"/>
          </binding>
        </element>
        <element id="Composition.subject">
          <path value="Composition.subject"/>
          <short value="Who and/or what the composition is about"/>
          <definition
                      value="Who or what the composition is about. The composition can be about a person, (patient or healthcare practitioner), a device (e.g. a machine) or even a group of subjects (such as a document about a herd of livestock, or a set of patients that share a common exposure)."/>
          <min value="0"/>
          <max value="0"/>
          <type>
            <code value="Reference"/>
            <targetProfile
                           value="http://hl7.org/fhir/StructureDefinition/Resource"/>
          </type>
        </element>
        <element id="Composition.date">
          <path value="Composition.date"/>
          <short value="When the Catalog was created"/>
          <definition value="When the Catalog was created."/>
          <alias value="IssueDate"/>
          <min value="1"/>
          <max value="1"/>
          <type>
            <code value="dateTime"/>
          </type>
        </element>
        <element id="Composition.section">
          <path value="Composition.section"/>
          <min value="0"/>
          <max value="*"/>
        </element>
      </differential>
    </StructureDefinition>