description: Variable specifying a logic to generate a variable for use in subsequent logic.  The name of the variable will be added to FHIRPath's context when processing descendants of the element that contains this extension.
package_name: hl7.fhir.r4b.examples
derivation: constraint
name: Variable
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/StructureDefinition/variable'}
    index: 1
  value:
    choices: [valueExpression]
    index: 3
  valueExpression: {type: Expression, choiceOf: value, index: 4}
package_version: 4.3.0
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/variable
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 4.3.0
required: [valueExpression, value]