description: The extent of a burn wound is indicated in a percentage of the ‘Total Body Surface Area’ (TBSA). package_name: nictiz.fhir.nl.r4.zib2020 derivation: constraint name: ZibBurnwoundExtent abstract: true type: Observation elements: code: pattern: type: CodeableConcept value: coding: - {code: '360531000146101', system: 'http://snomed.info/sct'} index: 0 value: short: Extent choices: [valueQuantity] index: 2 valueQuantity: {type: Quantity, short: Extent, choiceOf: value, index: 3} package_version: 0.12.0-beta.3 class: profile kind: resource url: http://nictiz.nl/fhir/StructureDefinition/zib-Burnwound.Extent base: http://hl7.org/fhir/StructureDefinition/Observation version: null