ICD-11 classes
13 Diseases of the digestive system
Inflammatory bowel diseases
DD70 — Crohn disease

ICD-11 DD70 — Crohn disease

Crohn’s disease is characterised by chronic and relapsing transmural inflammation extending through all layers of the small and/or large intestinal walls and has potential to involve the patient’s entire gastrointestinal tract.

Diagnosis with code DD70 contains 9 clarifying diagnoses:

1. DD70.0 — Crohn disease of upper gastrointestinal tract
2. DD70.1 — Crohn disease of small intestine
3. DD70.2 — Crohn disease of appendix
4. DD70.3 — Crohn disease of large intestine
5. DD70.4 — Crohn disease of anal region
6. DD70.5 — Crohn disease of both small and large intestine
7. DD70.6 — Crohn disease of anastomotic sites
8. DD70.Y — Crohn disease of other specified site
9. DD70.Z — Crohn disease, unspecified site