• 1 - A condition where surgery has been performed (Surgical code)
  • 3 - Gastrointestinal
    • 7 - Liver or biliary tree
      • 37 - Transplant (or related)
        • 1 - Liver allograft recipient
        • 2 - Liver allograft rejection
        • 3 - Liver allograft donor
• 2 - A condition where no surgery has been performed (non-surgical code)