description: The population basis specifies the type of elements in the population. For a subject-based measure, this would be boolean (because the population criteria define yes/no values for each individual subject). For a non-subject-based measure, this would be the type of elements in the population (such as encounters or procedures).
package_name: hl7.fhir.us.cqfmeasures
derivation: constraint
name: PopulationBasis
type: Extension
elements:
  url:
    type: uri
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-populationBasis'}
    index: 0
  value:
    choices: [valueCode]
    index: 2
  valueCode: {type: code, choiceOf: value, index: 3}
package_version: 1.1.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/cqfmeasures/StructureDefinition/cqfm-populationBasis
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 1.1.0