• 1 - A condition where surgery has been performed (Surgical code)
  • 2 - Cardiovascular
    • 6 - Thoracic aorta
      • 8 - Congenital or acquired deformity or abnormality
        • 1 - Coarctation of aorta
        • 2 - Marfan's syndrome
        • 3 - Congenital abnormality of aortic arch
        • 4 - Transposition of great arteries
        • 5 - Truncus arteriosus
        • 6 - Patent ductus arteriosus
• 2 - A condition where no surgery has been performed (non-surgical code)