• 1 - A condition where surgery has been performed (Surgical code)
  • 2 - Cardiovascular
    • 4 - Heart valves
      • 8 - Congenital or acquired deformity or abnormality
        • 1 - Abnormality of aortic valve
        • 2 - Abnormality of mitral valve
        • 3 - Abnormality of pulmonary valve
        • 4 - Abnormality of tricuspid valve
        • 5 - Tetralogy of Fallot
        • 6 - AV canal defect
        • 7 - Abnormality of prosthetic valve
• 2 - A condition where no surgery has been performed (non-surgical code)