• 1 - A condition where surgery has been performed (Surgical code)
  • 4 - Neurological (including eyes)
    • 1 - Head, neck (extracranial) or eyes
      • 8 - Congenital or acquired deformity or abnormality
        • 1 - Mouth, mandible, pharynx or facial bones deformity
        • 2 - Cystic hygroma
        • 3 - Extracranial or neck arterio-venous malformation or haemangioma
        • 4 - Cholesteatoma
• 2 - A condition where no surgery has been performed (non-surgical code)