description: The level of equivalence between the element containing the mapping and the element mapped to. package_name: hl7.fhir.core derivation: constraint name: equivalent | equal | wider | subsumes | narrower | specializes | inexact | unmatched | disjoint type: null elements: extension: {name: extension, index: 0} url: type: uri pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/elementdefinition-equivalence'} index: 1 value: choices: [valueCode] index: 3 valueCode: {type: code, choiceOf: value, index: 4} package_version: 1.4.0 extensions: {} class: datatype kind: datatype url: http://hl7.org/fhir/StructureDefinition/elementdefinition-equivalence base: http://hl7.org/fhir/StructureDefinition/Extension version: null required: [valueCode, value]