description: null package_name: fhir.r4.wales.stu1 derivation: constraint name: DataStandardsWalesObservationLab type: Observation elements: category: index: 0 slicing: rules: open discriminator: - {path: $this, type: pattern} min: 1 slices: LaboratorySlice: match: coding: - {code: laboratory, system: 'http://hl7.org/fhir/ValueSet/observation-category', display: Laboratory, version: 4.3.0} schema: pattern: type: CodeableConcept value: coding: - {code: laboratory, system: 'http://hl7.org/fhir/ValueSet/observation-category', display: Laboratory, version: 4.3.0} _required: true type: CodeableConcept index: 1 min: 1 max: 1 package_version: 1.1.0 class: profile kind: resource url: https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Observation-Lab base: https://fhir.nhs.wales/StructureDefinition/DataStandardsWales-Observation version: 0.0.5 required: [category]