description: The number of the session in a radiotherapy treatment course.
package_name: hl7.fhir.us.codex-radiation-therapy
derivation: constraint
name: RadiotherapySessionNumber
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-session-number'}
    index: 1
  value:
    short: Session Number
    choices: [valuePositiveInt]
    index: 3
  valuePositiveInt: {type: positiveInt, short: Session Number, choiceOf: value, index: 4}
package_version: 2.0.0
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/us/codex-radiation-therapy/StructureDefinition/codexrt-radiotherapy-session-number
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 2.0.0
required: [valuePositiveInt, value]