<status value="draft" /> <date value="2025-10-30" /> <publisher value="Israel Ministry of Health" /> <contact> <name value="Israel MOH FHIR" /> <telecom> <system value="url" /> <value value="https://fhir.health.gov.il" /> </telecom> </contact> <description value="Provides confidence metadata for a Linkage.item, including a numeric score (0..1), the basis for the assessment, and an optional note." /> <jurisdiction> <coding> <system value="urn:iso:std:iso:3166" /> <code value="IL" /> <display value="Israel" /> </coding> </jurisdiction> <purpose value="Supports downstream consumers in interpreting how strongly two records are believed to represent the same real-world occurrence when using Linkage." /> <fhirVersion value="4.0.1" /> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="Linkage.item" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <short value="Confidence that this Linkage.item represents the same real-world occurrence" /> <constraint> <key value="lc-1" /> <severity value="error" /> <human value="If score is present, it must be between 0 and 1 (inclusive)." /> <expression value="extension('score').exists() implies (extension('score').value.as(decimal) >= 0 and extension('score').value.as(decimal) <= 1)" /> </constraint> <constraint> <key value="lc-2" /> <severity value="error" /> <human value="At least one of score, basis, or note must be present." /> <expression value="extension('score').exists() or extension('basis').exists() or extension('note').exists()" /> </constraint> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <slicing> <discriminator> <type value="value" /> <path value="url" /> </discriminator> <ordered value="false" /> <rules value="open" /> </slicing> </element> <element id="Extension.extension:score"> <path value="Extension.extension" /> <sliceName value="score" /> <min value="0" /> <max value="1" /> </element> <element id="Extension.extension:score.url"> <path value="Extension.extension.url" /> <fixedUri value="score" /> </element> <element id="Extension.extension:score.value[x]"> <path value="Extension.extension.value[x]" /> <min value="1" /> <max value="1" /> <type> <code value="decimal" /> </type> </element> <element id="Extension.extension:basis"> <path value="Extension.extension" /> <sliceName value="basis" /> <min value="0" /> <max value="1" /> </element> <element id="Extension.extension:basis.url"> <path value="Extension.extension.url" /> <fixedUri value="basis" /> </element> <element id="Extension.extension:basis.value[x]"> <path value="Extension.extension.value[x]" /> <min value="1" /> <max value="1" /> <type> <code value="CodeableConcept" /> </type> <binding> <strength value="preferred" /> <valueSet value="http://fhir.health.gov.il/ValueSet/linkage-basis" /> </binding> </element> <element id="Extension.extension:note"> <path value="Extension.extension" /> <sliceName value="note" /> <min value="0" /> <max value="1" /> </element> <element id="Extension.extension:note.url"> <path value="Extension.extension.url" /> <fixedUri value="note" /> </element> <element id="Extension.extension:note.value[x]"> <path value="Extension.extension.value[x]" /> <min value="1" /> <max value="1" /> <type> <code value="string" /> </type> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="http://fhir.health.gov.il/StructureDefinition/linkageConfidence" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <max value="0" /> </element> </differential> </StructureDefinition>