description: A numeric value that allows the comparison (less than, greater than) or other numerical manipulation of a concept (e.g. Adding up components of a score). Scores are usually a whole number, but occasionally decimals are encountered in scores. package_name: rs/hl7.fhir.r5.core derivation: constraint name: ItemWeight type: Extension elements: extension: {index: 0} url: pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/itemWeight'} type: uri index: 1 value: choices: [valueDecimal] index: 3 valueDecimal: {type: decimal, choiceOf: value, index: 4} package_version: 5.0.0-snapshot3 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/itemWeight base: http://hl7.org/fhir/StructureDefinition/Extension version: 5.0.0-snapshot3 required: [value, valueDecimal]