• 1 - A condition where surgery has been performed (Surgical code)
  • 3 - Gastrointestinal
    • 6 - Large bowel, rectum or anus
      • 30 - Obstruction
        • 1 - Large bowel herniation
        • 2 - Large bowel volvulus
        • 3 - Large bowel adhesions
        • 4 - Large bowel intussusception or prolapse
        • 6 - Large bowel inflammatory masses
        • 7 - Functional obstruction or pseudo-obstruction
        • 8 - Malignant large bowel tumour
        • 9 - Villous adenoma or benign large bowel tumour
• 2 - A condition where no surgery has been performed (non-surgical code)