• 1 - A condition where surgery has been performed (Surgical code)
  • 4 - Neurological (including eyes)
    • 4 - Peripheral nervous system
      • 9 - Degeneration
      • 27 - Infection
      • 28 - Inflammation
      • 56 - Trauma
• 2 - A condition where no surgery has been performed (non-surgical code)