• 1 - A condition where surgery has been performed (Surgical code)
• 2 - A condition where no surgery has been performed (non-surgical code)
  • 3 - Gastrointestinal
    • 2 - Oesophagus
      • 8 - Congenital or acquired deformity or abnormality
        • 1 - Oesophageal atresia
        • 3 - Achalasia
        • 4 - Barrett's oesophagus
        • 5 - Traumatic tracheo-oesophageal fistula
        • 6 - Non-traumatic tracheo-oesophageal fistula