• 1 - A condition where surgery has been performed (Surgical code)
• 2 - A condition where no surgery has been performed (non-surgical code)
  • 3 - Gastrointestinal
    • 3 - Stomach
      • 30 - Obstruction
        • 1 - Pyloric obstruction
        • 2 - Congenital pyloric stenosis
        • 3 - Gastric herniation
        • 4 - Gastric volvulus
        • 5 - Gastric tumour