description: This profile constrains the ChLabObservationSingleTest profile for the purpose of laboratory Erythrocyte Distribuition Width in Switzerland. package_name: ch.fhir.ig.ch-lab-report derivation: constraint name: ChLabErythrocyteDistributionWidth type: Observation elements: category: pattern: type: CodeableConcept value: coding: - {code: 18723-7, system: 'http://loinc.org', display: Hematology studies (set)} index: 0 slicing: slices: studyType: match: {} schema: pattern: type: CodeableConcept value: coding: - {code: 18723-7, system: 'http://loinc.org', display: Hematology studies (set)} index: 0 specialty: match: {} schema: pattern: type: CodeableConcept value: coding: - {code: '394916005', system: 'http://snomed.info/sct', display: Hematopathology} index: 1 code: pattern: type: CodeableConcept value: coding: - {code: 21000-5, system: 'http://loinc.org', display: 'Erythrocyte distribution width [Entitic volume] by Automated count'} index: 2 elements: text: short: LOINC Display Name pattern: {type: String, value: 'Erythrocyte distribution width Auto (RBC) [Entitic vol]'} index: 3 method: pattern: type: CodeableConcept value: coding: - {code: '702659008', system: 'http://snomed.info/sct', display: Automated count technique (qualifier value)} index: 4 package_version: 1.0.0-ballot class: profile kind: resource url: http://fhir.ch/ig/ch-lab-report/StructureDefinition/ch-lab-observation-results-ery-distribution-width base: http://fhir.ch/ig/ch-lab-report/StructureDefinition/ChLab-observation-single-test version: 1.0.0-ballot