description: A homogeneous material with a definite composition. package_name: hl7.fhir.r6.core derivation: specialization name: Substance type: Substance elements: identifier: {isModifier: false, short: Unique identifier, type: Identifier, mustSupport: false, array: true, isSummary: true, index: 0} status: isModifier: true short: active | inactive | entered-in-error type: code mustSupport: false binding: {strength: required, valueSet: 'http://hl7.org/fhir/ValueSet/substance-status|6.0.0-ballot3'} isModifierReason: This element is labelled as a modifier because it is a status element that contains status entered-in-error which means that the resource should not be treated as valid isSummary: true index: 1 category: isModifier: false short: What class/type of substance this is type: CodeableConcept mustSupport: false array: true binding: {strength: extensible, valueSet: 'http://hl7.org/fhir/ValueSet/substance-category'} isSummary: true index: 2 code: isModifier: false short: What substance this is type: CodeableReference mustSupport: false binding: {strength: example, valueSet: 'http://hl7.org/fhir/ValueSet/substance-code'} isSummary: true index: 3 description: {isModifier: false, short: 'Textual description of the substance, comments', type: markdown, mustSupport: false, isSummary: true, index: 4} expiry: {isModifier: false, short: When no longer valid to use, type: dateTime, mustSupport: false, isSummary: true, index: 5} quantity: {isModifier: false, short: Amount of substance in the package, type: Quantity, mustSupport: false, isSummary: true, index: 6} package_version: 6.0.0-ballot3 class: resource kind: resource url: http://hl7.org/fhir/StructureDefinition/Substance base: http://hl7.org/fhir/StructureDefinition/DomainResource version: 6.0.0-ballot3 required: [code]