Regional enteritis of small intestine

This code signifies Crohn's disease specifically affecting the small intestine. It describes a chronic, inflammatory bowel disease characterized by transmural inflammation, skip lesions, and potential complications such as strictures, fistulas, and abscesses within the small bowel.

Apply this code when documentation clearly indicates a diagnosis of Crohn's disease localized to the small intestine. This includes conditions like ileitis, jejunoileitis, or diffuse small bowel Crohn's. Supporting documentation should specify the affected anatomical site within the small bowel.

• Differentiate from Crohn's disease affecting other parts of the gastrointestinal tract (e.g., large intestine, colon, or unspecified sites).
• Look for specific mention of "small intestine," "ileum," or "jejunum" in the diagnostic statement.
• Consider additional codes for complications such as intestinal obstruction, fistula, or abscess, if documented.