<status value="active" /> <publisher value="Synapxe" /> <description value="A profile constraining the Reference data type for references to Encounter resources." /> <fhirVersion value="5.0.0" /> <kind value="complex-type" /> <abstract value="false" /> <type value="Reference" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Reference" /> <derivation value="constraint" /> <snapshot> <element id="Reference"> <path value="Reference" /> <short value="A reference from one resource to another" /> <definition value="A reference from one resource to another." /> <comment value="References SHALL be a reference to an actual FHIR resource, and SHALL be resolvable (allowing for access control, temporary unavailability, etc.). Resolution can be either by retrieval from the URL, or, where applicable by resource type, by treating an absolute reference as a canonical URL and looking it up in a local registry/repository." /> <min value="0" /> <max value="*" /> <base> <path value="Reference" /> <min value="0" /> <max value="*" /> </base> <constraint> <key value="ele-1" /> <severity value="error" /> <human value="All FHIR elements must have a @value or children" /> <expression value="hasValue() or (children().count() > id.count())" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <constraint> <key value="ref-1" /> <severity value="error" /> <human value="SHALL have a contained resource if a local reference is provided" /> <expression value="reference.exists() implies (reference.startsWith('#').not() or (reference.substring(1).trace('url') in %rootResource.contained.id.trace('ids')) or (reference='#' and %rootResource!=%resource))" /> <source value="http://hl7.org/fhir/StructureDefinition/Reference" /> </constraint> <constraint> <key value="ref-2" /> <severity value="error" /> <human value="At least one of reference, identifier and display SHALL be present (unless an extension is provided)." /> <expression value="reference.exists() or identifier.exists() or display.exists() or extension.exists()" /> <source value="http://hl7.org/fhir/StructureDefinition/Reference" /> </constraint> <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="Reference.id"> <path value="Reference.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="0" /> <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" /> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> </element> <element id="Reference.extension"> <path value="Reference.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 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="0" /> <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() > 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> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> <element id="Reference.reference"> <path value="Reference.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="0" /> <max value="0" /> <base> <path value="Reference.reference" /> <min value="0" /> <max value="1" /> </base> <type> <code value="string" /> </type> <condition value="ref-2" /> <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())" /> <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="Reference.type"> <path value="Reference.type" /> <short value="Type the reference refers to (e.g. "Patient") - must be a resource in resources" /> <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 known RESTful URL) or by resolving the target of the reference." /> <min value="1" /> <max value="1" /> <base> <path value="Reference.type" /> <min value="0" /> <max value="1" /> </base> <type> <code value="uri" /> </type> <patternUri value="Encounter" /> <constraint> <key value="ele-1" /> <severity value="error" /> <human value="All FHIR elements must have a @value or children" /> <expression value="hasValue() or (children().count() > id.count())" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <isSummary value="true" /> <binding> <extension url="http://hl7.org/fhir/tools/StructureDefinition/binding-definition"> <valueString value="Aa resource (or, for logical models, the URI of the logical model)." /> </extension> <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="Reference.identifier"> <path value="Reference.identifier" /> <short value="An identifier intended for computation" /> <definition value="An identifier - identifies some entity uniquely and unambiguously. Typically this is used for business identifiers." /> <comment value="The rules of the identifier.type determine if a check digit is part of the ID value or sent separately, such as through the checkDigit extension." /> <min value="1" /> <max value="1" /> <base> <path value="Reference.identifier" /> <min value="0" /> <max value="1" /> </base> <type> <code value="Identifier" /> <profile value="https://fhir.synapxe.sg/StructureDefinition/profile-identifier-event-id" /> </type> <condition value="ref-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() > id.count())" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <constraint> <key value="ident-1" /> <severity value="warning" /> <human value="Identifier with no value has limited utility. If communicating that an identifier value has been suppressed or missing, the value element SHOULD be present with an extension indicating the missing semantic - e.g. data-absent-reason" /> <expression value="value.exists()" /> <source value="http://hl7.org/fhir/StructureDefinition/Identifier" /> </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="Reference.display"> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable"> <valueBoolean value="true" /> </extension> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable"> <valueBoolean value="true" /> </extension> <path value="Reference.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="ref-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() > id.count())" /> <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> </snapshot> <differential> <element id="Reference.id"> <path value="Reference.id" /> <max value="0" /> </element> <element id="Reference.extension"> <path value="Reference.extension" /> <max value="0" /> </element> <element id="Reference.reference"> <path value="Reference.reference" /> <max value="0" /> </element> <element id="Reference.type"> <path value="Reference.type" /> <min value="1" /> <patternUri value="Encounter" /> </element> <element id="Reference.identifier"> <path value="Reference.identifier" /> <min value="1" /> <type> <code value="Identifier" /> <profile value="https://fhir.synapxe.sg/StructureDefinition/profile-identifier-event-id" /> </type> </element> </differential> </StructureDefinition>