type: object
required:
  - description
  - when
properties:
  description:
    description: |-
      If possible, normalized, but usually a coding unique to the source system or manually typed by a practitioner.
      
      OPEN QUESTION: Given the unstructured nature of this field, contraindication does not appear usable to callers for anything
      but showing it directly to a practitioner and hoping they know what it means.
    type: string
    example: 'RAYNAUD, FENOMEEN'
  when:
    description: |-
      If present, the date when this contraindication was registered.
    $ref: ../date.yaml