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 as well as extensions within the same element.
package_name: hl7.fhir.uv.extensions.r4
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: 5.3.0-ballot-tc1
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/StructureDefinition/variable
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 5.3.0-ballot-tc1
required: [valueExpression, value]