description: 'R4: `SubstanceAmount.amountType` (new:CodeableConcept)'
package_name: hl7.fhir.uv.xver-r4.r4b
derivation: constraint
name: ExtensionSubstanceAmount_AmountType
type: Extension
elements:
  url:
    base: {max: '1', min: 1, path: Extension.url}
    pattern: {type: Uri, value: 'http://hl7.org/fhir/4.0/StructureDefinition/extension-SubstanceAmount.amountType'}
    index: 0
  value:
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    short: 'Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements'
    choices: [valueCodeableConcept]
    index: 2
  valueCodeableConcept:
    short: 'Most elements that require a quantitative value will also have a field called amount type. Amount type should always be specified because the actual value of the amount is often dependent on it. EXAMPLE: In capturing the actual relative amounts of substances or molecular fragments it is essential to indicate whether the amount refers to a mole ratio or weight ratio. For any given element an effort should be made to use same the amount type for all related definitional elements'
    type: CodeableConcept
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    choiceOf: value
    index: 3
package_version: 0.1.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/4.0/StructureDefinition/extension-SubstanceAmount.amountType
base: http://hl7.org/fhir/StructureDefinition/Extension|4.3.0
version: 0.1.0
required: [url]