• 1 - A condition where surgery has been performed (Surgical code)
  • 1 - Respiratory
    • 3 - Pulmonary vasculature
      • 19 - Hypertension
        • 1 - Idiopathic pulmonary hypertension
        • 2 - Eisenmenger's syndrome
        • 3 - Cor pulmonale
        • 4 - Chronic thromboembolic pulmonary hypertension
• 2 - A condition where no surgery has been performed (non-surgical code)