<status value="active" /> <date value="2026-04-14" /> <fhirVersion value="4.0.1" /> <kind value="complex-type" /> <abstract value="false" /> <type value="Signature" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Signature" /> <derivation value="constraint" /> <snapshot> <element id="Signature"> <path value="Signature" /> <short value="A Signature - XML DigSig, JWS, Graphical image of signature, etc." /> <definition value="A signature along with supporting context. The signature may be a digital signature that is cryptographic in nature, or some other signature acceptable to the domain. This other signature may be as simple as a graphical image representing a hand-written signature, or a signature ceremony Different signature approaches have different utilities." /> <comment value="The elements of the Signature Resource are for ease of access of these elements. For digital signatures (Xml DigSig, JWS), the non-repudiation proof comes from the Signature validation, which includes validation of the referenced objects (e.g. Resources) (a.k.a., Content) in the XML-Signature Detached form." /> <min value="0" /> <max value="*" /> <base> <path value="Signature" /> <min value="0" /> <max value="*" /> </base> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> <element id="Signature.id"> <path value="Signature.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> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> </element> <element id="Signature.extension"> <path value="Signature.extension" /> <slicing> <discriminator> <type value="value" /> <path value="url" /> </discriminator> <description value="Extensions are always sliced by (at least) url" /> <rules value="open" /> </slicing> <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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." /> <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> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <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()" /> <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" /> <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> </constraint> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> <element id="Signature.type"> <path value="Signature.type" /> <slicing> <discriminator> <type value="value" /> <path value="code" /> </discriminator> <rules value="closed" /> </slicing> <short value="Indication of the reason the entity signed the object(s)" /> <definition value="An indication of the reason that the entity signed this document. This may be explicitly included as part of the signature information and can be used when determining accountability for various actions concerning the document." /> <comment value="Examples include attesting to: authorship, correct transcription, and witness of specific event. Also known as a "Commitment Type Indication"." /> <min value="1" /> <max value="1" /> <base> <path value="Signature.type" /> <min value="1" /> <max value="*" /> </base> <type> <code value="Coding" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <mustSupport value="true" /> <isSummary value="true" /> <binding> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="SignatureType" /> </extension> <strength value="required" /> <description value="An indication of the reason that an entity signed the object." /> <valueSet value="http://hl7.org/fhir/ValueSet/signature-type" /> </binding> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="CE/CNE/CWE subset one of the sets of component 1-3 or 4-6" /> </mapping> <mapping> <identity value="rim" /> <map value="CV" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding rdfs:subClassOf dt:CDCoding" /> </mapping> </element> <element id="Signature.type:AuthorsSignature"> <path value="Signature.type" /> <sliceName value="AuthorsSignature" /> <short value="Indication of the reason the entity signed the object(s)" /> <definition value="An indication of the reason that the entity signed this document. This may be explicitly included as part of the signature information and can be used when determining accountability for various actions concerning the document." /> <comment value="Examples include attesting to: authorship, correct transcription, and witness of specific event. Also known as a "Commitment Type Indication"." /> <min value="0" /> <max value="1" /> <base> <path value="Signature.type" /> <min value="1" /> <max value="*" /> </base> <type> <code value="Coding" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <binding> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="SignatureType" /> </extension> <strength value="preferred" /> <description value="An indication of the reason that an entity signed the object." /> <valueSet value="http://hl7.org/fhir/ValueSet/signature-type" /> </binding> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="CE/CNE/CWE subset one of the sets of component 1-3 or 4-6" /> </mapping> <mapping> <identity value="rim" /> <map value="CV" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding rdfs:subClassOf dt:CDCoding" /> </mapping> </element> <element id="Signature.type:AuthorsSignature.id"> <path value="Signature.type.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> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> </element> <element id="Signature.type:AuthorsSignature.extension"> <path value="Signature.type.extension" /> <slicing> <discriminator> <type value="value" /> <path value="url" /> </discriminator> <description value="Extensions are always sliced by (at least) url" /> <rules value="open" /> </slicing> <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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." /> <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> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <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()" /> <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" /> <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> </constraint> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> <element id="Signature.type:AuthorsSignature.system"> <path value="Signature.type.system" /> <short value="Identity of the terminology system" /> <definition value="The identification of the code system that defines the meaning of the symbol in the code." /> <comment value="The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously." /> <requirements value="Need to be unambiguous about the source of the definition of the symbol." /> <min value="0" /> <max value="1" /> <base> <path value="Coding.system" /> <min value="0" /> <max value="1" /> </base> <type> <code value="uri" /> </type> <fixedUri value="urn:iso-astm:E1762-95:2013" /> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="C*E.3" /> </mapping> <mapping> <identity value="rim" /> <map value="./codeSystem" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem" /> </mapping> </element> <element id="Signature.type:AuthorsSignature.version"> <path value="Signature.type.version" /> <short value="Version of the system - if relevant" /> <definition value="The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged." /> <comment value="Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date." /> <min value="0" /> <max value="1" /> <base> <path value="Coding.version" /> <min value="0" /> <max value="1" /> </base> <type> <code value="string" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="C*E.7" /> </mapping> <mapping> <identity value="rim" /> <map value="./codeSystemVersion" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion" /> </mapping> </element> <element id="Signature.type:AuthorsSignature.code"> <path value="Signature.type.code" /> <short value="Symbol in syntax defined by the system" /> <definition value="A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination)." /> <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" /> <requirements value="Need to refer to a particular code in the system." /> <min value="1" /> <max value="1" /> <base> <path value="Coding.code" /> <min value="0" /> <max value="1" /> </base> <type> <code value="code" /> </type> <fixedCode value="1.2.840.10065.1.12.1.1" /> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="C*E.1" /> </mapping> <mapping> <identity value="rim" /> <map value="./code" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code" /> </mapping> </element> <element id="Signature.type:AuthorsSignature.display"> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable"> <valueBoolean value="true" /> </extension> <path value="Signature.type.display" /> <short value="Representation defined by the system" /> <definition value="A representation of the meaning of the code in the system, following the rules of the system." /> <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" /> <requirements value="Need to be able to carry a human-readable meaning of the code for readers that do not know the system." /> <min value="0" /> <max value="1" /> <base> <path value="Coding.display" /> <min value="0" /> <max value="1" /> </base> <type> <code value="string" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="C*E.2 - but note this is not well followed" /> </mapping> <mapping> <identity value="rim" /> <map value="CV.displayName" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName" /> </mapping> </element> <element id="Signature.type:AuthorsSignature.userSelected"> <path value="Signature.type.userSelected" /> <short value="If this coding was chosen directly by the user" /> <definition value="Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays)." /> <comment value="Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely." /> <requirements value="This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing." /> <min value="0" /> <max value="1" /> <base> <path value="Coding.userSelected" /> <min value="0" /> <max value="1" /> </base> <type> <code value="boolean" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="Sometimes implied by being first" /> </mapping> <mapping> <identity value="rim" /> <map value="CD.codingRationale" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]" /> </mapping> </element> <element id="Signature.type:VerificationSignature"> <path value="Signature.type" /> <sliceName value="VerificationSignature" /> <short value="Indication of the reason the entity signed the object(s)" /> <definition value="An indication of the reason that the entity signed this document. This may be explicitly included as part of the signature information and can be used when determining accountability for various actions concerning the document." /> <comment value="Examples include attesting to: authorship, correct transcription, and witness of specific event. Also known as a "Commitment Type Indication"." /> <min value="0" /> <max value="1" /> <base> <path value="Signature.type" /> <min value="1" /> <max value="*" /> </base> <type> <code value="Coding" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <binding> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="SignatureType" /> </extension> <strength value="preferred" /> <description value="An indication of the reason that an entity signed the object." /> <valueSet value="http://hl7.org/fhir/ValueSet/signature-type" /> </binding> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="CE/CNE/CWE subset one of the sets of component 1-3 or 4-6" /> </mapping> <mapping> <identity value="rim" /> <map value="CV" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding rdfs:subClassOf dt:CDCoding" /> </mapping> </element> <element id="Signature.type:VerificationSignature.id"> <path value="Signature.type.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> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> </element> <element id="Signature.type:VerificationSignature.extension"> <path value="Signature.type.extension" /> <slicing> <discriminator> <type value="value" /> <path value="url" /> </discriminator> <description value="Extensions are always sliced by (at least) url" /> <rules value="open" /> </slicing> <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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." /> <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> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <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()" /> <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" /> <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> </constraint> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> <element id="Signature.type:VerificationSignature.system"> <path value="Signature.type.system" /> <short value="Identity of the terminology system" /> <definition value="The identification of the code system that defines the meaning of the symbol in the code." /> <comment value="The URI may be an OID (urn:oid:...) or a UUID (urn:uuid:...). OIDs and UUIDs SHALL be references to the HL7 OID registry. Otherwise, the URI should come from HL7's list of FHIR defined special URIs or it should reference to some definition that establishes the system clearly and unambiguously." /> <requirements value="Need to be unambiguous about the source of the definition of the symbol." /> <min value="0" /> <max value="1" /> <base> <path value="Coding.system" /> <min value="0" /> <max value="1" /> </base> <type> <code value="uri" /> </type> <fixedUri value="urn:iso-astm:E1762-95:2013" /> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="C*E.3" /> </mapping> <mapping> <identity value="rim" /> <map value="./codeSystem" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding.system rdfs:subPropertyOf dt:CDCoding.codeSystem" /> </mapping> </element> <element id="Signature.type:VerificationSignature.version"> <path value="Signature.type.version" /> <short value="Version of the system - if relevant" /> <definition value="The version of the code system which was used when choosing this code. Note that a well-maintained code system does not need the version reported, because the meaning of codes is consistent across versions. However this cannot consistently be assured, and when the meaning is not guaranteed to be consistent, the version SHOULD be exchanged." /> <comment value="Where the terminology does not clearly define what string should be used to identify code system versions, the recommendation is to use the date (expressed in FHIR date format) on which that version was officially published as the version date." /> <min value="0" /> <max value="1" /> <base> <path value="Coding.version" /> <min value="0" /> <max value="1" /> </base> <type> <code value="string" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="C*E.7" /> </mapping> <mapping> <identity value="rim" /> <map value="./codeSystemVersion" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding.version rdfs:subPropertyOf dt:CDCoding.codeSystemVersion" /> </mapping> </element> <element id="Signature.type:VerificationSignature.code"> <path value="Signature.type.code" /> <short value="Symbol in syntax defined by the system" /> <definition value="A symbol in syntax defined by the system. The symbol may be a predefined code or an expression in a syntax defined by the coding system (e.g. post-coordination)." /> <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" /> <requirements value="Need to refer to a particular code in the system." /> <min value="1" /> <max value="1" /> <base> <path value="Coding.code" /> <min value="0" /> <max value="1" /> </base> <type> <code value="code" /> </type> <fixedCode value="1.2.840.10065.1.12.1.5" /> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="C*E.1" /> </mapping> <mapping> <identity value="rim" /> <map value="./code" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding.code rdfs:subPropertyOf dt:CDCoding.code" /> </mapping> </element> <element id="Signature.type:VerificationSignature.display"> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable"> <valueBoolean value="true" /> </extension> <path value="Signature.type.display" /> <short value="Representation defined by the system" /> <definition value="A representation of the meaning of the code in the system, following the rules of the system." /> <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" /> <requirements value="Need to be able to carry a human-readable meaning of the code for readers that do not know the system." /> <min value="0" /> <max value="1" /> <base> <path value="Coding.display" /> <min value="0" /> <max value="1" /> </base> <type> <code value="string" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="C*E.2 - but note this is not well followed" /> </mapping> <mapping> <identity value="rim" /> <map value="CV.displayName" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding.display rdfs:subPropertyOf dt:CDCoding.displayName" /> </mapping> </element> <element id="Signature.type:VerificationSignature.userSelected"> <path value="Signature.type.userSelected" /> <short value="If this coding was chosen directly by the user" /> <definition value="Indicates that this coding was chosen by a user directly - e.g. off a pick list of available items (codes or displays)." /> <comment value="Amongst a set of alternatives, a directly chosen code is the most appropriate starting point for new translations. There is some ambiguity about what exactly 'directly chosen' implies, and trading partner agreement may be needed to clarify the use of this element and its consequences more completely." /> <requirements value="This has been identified as a clinical safety criterium - that this exact system/code pair was chosen explicitly, rather than inferred by the system based on some rules or language processing." /> <min value="0" /> <max value="1" /> <base> <path value="Coding.userSelected" /> <min value="0" /> <max value="1" /> </base> <type> <code value="boolean" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="Sometimes implied by being first" /> </mapping> <mapping> <identity value="rim" /> <map value="CD.codingRationale" /> </mapping> <mapping> <identity value="orim" /> <map value="fhir:Coding.userSelected fhir:mapsTo dt:CDCoding.codingRationale. fhir:Coding.userSelected fhir:hasMap fhir:Coding.userSelected.map. fhir:Coding.userSelected.map a fhir:Map; fhir:target dt:CDCoding.codingRationale. fhir:Coding.userSelected\#true a [ fhir:source "true"; fhir:target dt:CDCoding.codingRationale\#O ]" /> </mapping> </element> <element id="Signature.when"> <path value="Signature.when" /> <short value="When the signature was created" /> <definition value="When the digital signature was signed." /> <comment value="This should agree with the information in the signature." /> <min value="1" /> <max value="1" /> <base> <path value="Signature.when" /> <min value="1" /> <max value="1" /> </base> <type> <code value="instant" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <mustSupport value="true" /> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> </element> <element id="Signature.who"> <path value="Signature.who" /> <short value="Who signed" /> <definition value="A reference to an application-usable description of the identity that signed (e.g. the signature used their private key)." /> <comment value="This should agree with the information in the signature." /> <min value="1" /> <max value="1" /> <base> <path value="Signature.who" /> <min value="1" /> <max value="1" /> </base> <type> <code value="Reference" /> <targetProfile value="https://gematik.de/fhir/erp/StructureDefinition/GEM_ERP_PR_Device" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <constraint> <key value="ref-1" /> <severity value="error" /> <human value="SHALL have a contained resource if a local reference is provided" /> <expression value="reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))" /> <xpath value="not(starts-with(f:reference/@value, '#')) or exists(ancestor::*[self::f:entry or self::f:parameter]/f:resource/f:*/f:contained/f:*[f:id/@value=substring-after(current()/f:reference/@value, '#')]|/*/f:contained/f:*[f:id/@value=substring-after(current()/f:reference/@value, '#')])" /> <source value="http://hl7.org/fhir/StructureDefinition/Reference" /> </constraint> <mustSupport value="true" /> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="The target of a resource reference is a RIM entry point (Act, Role, or Entity)" /> </mapping> </element> <element id="Signature.who.id"> <path value="Signature.who.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> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> </element> <element id="Signature.who.extension"> <path value="Signature.who.extension" /> <slicing> <discriminator> <type value="value" /> <path value="url" /> </discriminator> <description value="Extensions are always sliced by (at least) url" /> <rules value="open" /> </slicing> <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 manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." /> <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> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <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()" /> <xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), 'value')])" /> <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> </constraint> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> <element id="Signature.who.reference"> <path value="Signature.who.reference" /> <short value="Literal reference, Relative, internal or absolute URL" /> <definition value="A reference to a location at which the other resource is found. The reference may be a relative reference, in which case it is relative to the service base URL, or an absolute URL that resolves to the location where the resource is found. The reference may be version specific or not. If the reference is not to a FHIR RESTful server, then it should be assumed to be version specific. Internal fragment references (start with '#') refer to contained resources." /> <comment value="Using absolute URLs provides a stable scalable approach suitable for a cloud/web context, while using relative/logical references provides a flexible approach suitable for use when trading across closed eco-system boundaries. Absolute URLs do not need to point to a FHIR RESTful server, though this is the preferred approach. If the URL conforms to the structure "/[type]/[id]" then it should be assumed that the reference is to a FHIR RESTful server." /> <min value="1" /> <max value="1" /> <base> <path value="Reference.reference" /> <min value="0" /> <max value="1" /> </base> <type> <code value="string" /> </type> <condition value="ele-1" /> <condition value="ref-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <mustSupport value="true" /> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> <element id="Signature.who.type"> <path value="Signature.who.type" /> <short value="Type the reference refers to (e.g. "Patient")" /> <definition value="The expected type of the target of the reference. If both Reference.type and Reference.reference are populated and Reference.reference is a FHIR URL, both SHALL be consistent. The type is the Canonical URL of Resource Definition that is the type this reference refers to. References are URLs that are relative to http://hl7.org/fhir/StructureDefinition/ e.g. "Patient" is a reference to http://hl7.org/fhir/StructureDefinition/Patient. Absolute URLs are only allowed for logical models (and can only be used in references in logical models, not resources)." /> <comment value="This element is used to indicate the type of the target of the reference. This may be used which ever of the other elements are populated (or not). In some cases, the type of the target may be determined by inspection of the reference (e.g. a RESTful URL) or by resolving the target of the reference; if both the type and a reference is provided, the reference SHALL resolve to a resource of the same type as that specified." /> <min value="0" /> <max value="1" /> <base> <path value="Reference.type" /> <min value="0" /> <max value="1" /> </base> <type> <code value="uri" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <binding> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="FHIRResourceTypeExt" /> </extension> <strength value="extensible" /> <description value="Aa resource (or, for logical models, the URI of the logical model)." /> <valueSet value="http://hl7.org/fhir/ValueSet/resource-types" /> </binding> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> <element id="Signature.who.identifier"> <path value="Signature.who.identifier" /> <short value="Logical reference, when literal reference is not known" /> <definition value="An identifier for the target resource. This is used when there is no way to reference the other resource directly, either because the entity it represents is not available through a FHIR server, or because there is no way for the author of the resource to convert a known identifier to an actual location. There is no requirement that a Reference.identifier point to something that is actually exposed as a FHIR instance, but it SHALL point to a business concept that would be expected to be exposed as a FHIR instance, and that instance would need to be of a FHIR resource type allowed by the reference." /> <comment value="When an identifier is provided in place of a reference, any system processing the reference will only be able to resolve the identifier to a reference if it understands the business context in which the identifier is used. Sometimes this is global (e.g. a national identifier) but often it is not. For this reason, none of the useful mechanisms described for working with references (e.g. chaining, includes) are possible, nor should servers be expected to be able resolve the reference. Servers may accept an identifier based reference untouched, resolve it, and/or reject it - see CapabilityStatement.rest.resource.referencePolicy. When both an identifier and a literal reference are provided, the literal reference is preferred. Applications processing the resource are allowed - but not required - to check that the identifier matches the literal reference Applications converting a logical reference to a literal reference may choose to leave the logical reference present, or remove it. Reference is intended to point to a structure that can potentially be expressed as a FHIR resource, though there is no need for it to exist as an actual FHIR resource instance - except in as much as an application wishes to actual find the target of the reference. The content referred to be the identifier must meet the logical constraints implied by any limitations on what resource types are permitted for the reference. For example, it would not be legitimate to send the identifier for a drug prescription if the type were Reference(Observation|DiagnosticReport). One of the use-cases for Reference.identifier is the situation where no FHIR representation exists (where the type is Reference (Any)." /> <min value="0" /> <max value="1" /> <base> <path value="Reference.identifier" /> <min value="0" /> <max value="1" /> </base> <type> <code value="Identifier" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="v2" /> <map value="CX / EI (occasionally, more often EI maps to a resource id or a URL)" /> </mapping> <mapping> <identity value="rim" /> <map value="II - The Identifier class is a little looser than the v3 type II because it allows URIs as well as registered OIDs or GUIDs. Also maps to Role[classCode=IDENT]" /> </mapping> <mapping> <identity value="servd" /> <map value="Identifier" /> </mapping> <mapping> <identity value="rim" /> <map value=".identifier" /> </mapping> </element> <element id="Signature.who.display"> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable"> <valueBoolean value="true" /> </extension> <path value="Signature.who.display" /> <short value="Text alternative for the resource" /> <definition value="Plain text narrative that identifies the resource in addition to the resource reference." /> <comment value="This is generally not the same as the Resource.text of the referenced resource. The purpose is to identify what's being referenced, not to fully describe it." /> <min value="0" /> <max value="1" /> <base> <path value="Reference.display" /> <min value="0" /> <max value="1" /> </base> <type> <code value="string" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> <element id="Signature.onBehalfOf"> <path value="Signature.onBehalfOf" /> <short value="The party represented" /> <definition value="A reference to an application-usable description of the identity that is represented by the signature." /> <comment value="The party that can't sign. For example a child." /> <requirements value="used when the signature is on behalf of a non-signer." /> <min value="0" /> <max value="1" /> <base> <path value="Signature.onBehalfOf" /> <min value="0" /> <max value="1" /> </base> <type> <code value="Reference" /> <targetProfile value="http://hl7.org/fhir/StructureDefinition/Practitioner" /> <targetProfile value="http://hl7.org/fhir/StructureDefinition/PractitionerRole" /> <targetProfile value="http://hl7.org/fhir/StructureDefinition/RelatedPerson" /> <targetProfile value="http://hl7.org/fhir/StructureDefinition/Patient" /> <targetProfile value="http://hl7.org/fhir/StructureDefinition/Device" /> <targetProfile value="http://hl7.org/fhir/StructureDefinition/Organization" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <constraint> <key value="ref-1" /> <severity value="error" /> <human value="SHALL have a contained resource if a local reference is provided" /> <expression value="reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids'))" /> <xpath value="not(starts-with(f:reference/@value, '#')) or exists(ancestor::*[self::f:entry or self::f:parameter]/f:resource/f:*/f:contained/f:*[f:id/@value=substring-after(current()/f:reference/@value, '#')]|/*/f:contained/f:*[f:id/@value=substring-after(current()/f:reference/@value, '#')])" /> <source value="http://hl7.org/fhir/StructureDefinition/Reference" /> </constraint> <isSummary value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="The target of a resource reference is a RIM entry point (Act, Role, or Entity)" /> </mapping> </element> <element id="Signature.targetFormat"> <path value="Signature.targetFormat" /> <short value="The technical format of the signed resources" /> <definition value="A mime type that indicates the technical format of the target resources signed by the signature." /> <comment value=""xml", "json" and "ttl" are allowed, which describe the simple encodings described in the specification (and imply appropriate bundle support). Otherwise, mime types are legal here." /> <min value="0" /> <max value="1" /> <base> <path value="Signature.targetFormat" /> <min value="0" /> <max value="1" /> </base> <type> <code value="code" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <binding> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="MimeType" /> </extension> <strength value="required" /> <description value="The mime type of an attachment. Any valid mime type is allowed." /> <valueSet value="http://hl7.org/fhir/ValueSet/mimetypes|4.0.1" /> </binding> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> </element> <element id="Signature.sigFormat"> <path value="Signature.sigFormat" /> <short value="The technical format of the signature" /> <definition value="A mime type that indicates the technical format of the signature. Important mime types are application/signature+xml for X ML DigSig, application/jose for JWS, and image/* for a graphical image of a signature, etc." /> <comment value="Note that FHIR strings SHALL NOT exceed 1MB in size" /> <min value="1" /> <max value="1" /> <base> <path value="Signature.sigFormat" /> <min value="0" /> <max value="1" /> </base> <type> <code value="code" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <mustSupport value="true" /> <binding> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="MimeType" /> </extension> <strength value="required" /> <description value="The mime type of an attachment. Any valid mime type is allowed." /> <valueSet value="http://hl7.org/fhir/ValueSet/mimetypes|4.0.1" /> </binding> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> </element> <element id="Signature.data"> <path value="Signature.data" /> <short value="The actual signature content (XML DigSig. JWS, picture, etc.)" /> <definition value="The base64 encoding of the Signature content. When signature is not recorded electronically this element would be empty." /> <comment value="Where the signature type is an XML DigSig, the signed content is a FHIR Resource(s), the signature is of the XML form of the Resource(s) using XML-Signature (XMLDIG) "Detached Signature" form." /> <min value="1" /> <max value="1" /> <base> <path value="Signature.data" /> <min value="0" /> <max value="1" /> </base> <type> <code value="base64Binary" /> </type> <condition value="ele-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() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <mustSupport value="true" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> </element> </snapshot> <differential> <element id="Signature.type"> <path value="Signature.type" /> <slicing> <discriminator> <type value="value" /> <path value="code" /> </discriminator> <rules value="closed" /> </slicing> <max value="1" /> <mustSupport value="true" /> <binding> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="SignatureType" /> </extension> <strength value="required" /> <description value="An indication of the reason that an entity signed the object." /> <valueSet value="http://hl7.org/fhir/ValueSet/signature-type" /> </binding> </element> <element id="Signature.type:AuthorsSignature"> <path value="Signature.type" /> <sliceName value="AuthorsSignature" /> <min value="0" /> <max value="1" /> </element> <element id="Signature.type:AuthorsSignature.system"> <path value="Signature.type.system" /> <fixedUri value="urn:iso-astm:E1762-95:2013" /> </element> <element id="Signature.type:AuthorsSignature.code"> <path value="Signature.type.code" /> <min value="1" /> <fixedCode value="1.2.840.10065.1.12.1.1" /> </element> <element id="Signature.type:VerificationSignature"> <path value="Signature.type" /> <sliceName value="VerificationSignature" /> <min value="0" /> <max value="1" /> </element> <element id="Signature.type:VerificationSignature.system"> <path value="Signature.type.system" /> <fixedUri value="urn:iso-astm:E1762-95:2013" /> </element> <element id="Signature.type:VerificationSignature.code"> <path value="Signature.type.code" /> <min value="1" /> <fixedCode value="1.2.840.10065.1.12.1.5" /> </element> <element id="Signature.when"> <path value="Signature.when" /> <mustSupport value="true" /> </element> <element id="Signature.who"> <path value="Signature.who" /> <type> <code value="Reference" /> <targetProfile value="https://gematik.de/fhir/erp/StructureDefinition/GEM_ERP_PR_Device" /> </type> <mustSupport value="true" /> </element> <element id="Signature.who.reference"> <path value="Signature.who.reference" /> <min value="1" /> <mustSupport value="true" /> </element> <element id="Signature.sigFormat"> <path value="Signature.sigFormat" /> <min value="1" /> <mustSupport value="true" /> </element> <element id="Signature.data"> <path value="Signature.data" /> <min value="1" /> <mustSupport value="true" /> </element> </differential> </StructureDefinition>