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Classification and external resources
Specialty gastroenterology
ICD-10 K50.0 - K52.9
MeSH D007079

Ileitis is an inflammation of the ileum, a portion of the small intestine. Crohn's ileitis is a type of Crohn's disease affecting the ileum. Ileitis is caused by the bacterium Lawsonia intracellularis. Inflammatory bowel disease does not associate with Lawsonia intracellularis infection.