description: Possible value types for the measureScore elements *in addition to* the standard [Quantity](http://hl7.org/fhir/STU3/datatypes.html#quantity) type. The alternate type is determined by the Quality Measure [Aggregate Method](http://hl7.org/fhir/us/cqfmeasures/2019May/StructureDefinition-cqfm-aggregateMethod.html) extension used on the Measure.   The reported type of the measureScore for continuous variable measures is determined by the result type of the aggregate method element.
package_name: hl7.fhir.us.davinci
derivation: constraint
name: AlternateScoreType
type: Extension
elements:
  url:
    type: uri
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/davinci-deqm/StructureDefinition/extension-alternateScoreType'}
    index: 0
  value:
    choices: [valueQuantity, valueDateTime, valueCodeableConcept, valuePeriod, valueRange, valueDuration]
    index: 2
  valueQuantity: {type: Quantity, choiceOf: value, index: 3}
  valueDateTime: {type: dateTime, choiceOf: value, index: 4}
  valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 5}
  valuePeriod: {type: Period, choiceOf: value, index: 6}
  valueRange: {type: Range, choiceOf: value, index: 7}
  valueDuration: {type: Duration, choiceOf: value, index: 8}
package_version: deqm-1.0.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/davinci-deqm/StructureDefinition/extension-alternateScoreType
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 1.0.0