ICD-11

Noninfectious enteritis and ulcer of small intestine is inflammation or tissue defect in the small intestine of non-infectious origin, usually due to medication including chemotherapy or radiation therapy side effects; or allergic or systemic disorders. Its severity may vary from mild and inconvenient to severe and life-threatening.

Enteritis or ulcer of small intestine of unknown origin

CMUSE is an independent, rare disease characterised by chronic diarrhoea and by non-specific small intestinal ulceration and ulcerative stenosis which responds to corticosteroid therapy.