• 1 - A condition where surgery has been performed (Surgical code)
  • 2 - Cardiovascular
    • 2 - Myocardium or cardiac chambers
      • 37 - Transplant (or related)
        • 1 - Heart or heart-lung allograft
        • 2 - Heart or heart-lung allograft rejection
• 2 - A condition where no surgery has been performed (non-surgical code)