ICD-11 classes
13 Diseases of the digestive system
Functional gastrointestinal disorders
DD91 — Irritable bowel syndrome or certain specified functional...

ICD-11 DD91 — Irritable bowel syndrome or certain specified functional bowel disorders

This group incorporates functional bowel disorders which principally present symptoms attributable to the intestinal tract in the absence of specific and unique organic pathology in the small and large intestine.

Diagnosis with code DD91 contains 7 clarifying diagnoses:

1. DD91.0 — Irritable bowel syndrome
   It contains 5 clarifying diagnoses.
2. DD91.1 — Functional constipation
   It contains 1 clarifying diagnosis.
3. DD91.2 — Functional diarrhoea
4. DD91.3 — Functional bloating
5. DD91.4 — Functional abdominal pain syndrome
6. DD91.Y — Other specified irritable bowel syndrome or functional bowel disorders
7. DD91.Z — Irritable bowel syndrome or functional bowel disorders, unspecified