Fistula of intestine

This code represents an abnormal connection or passageway that forms between the intestine and another organ or the skin surface, excluding those specifically linked to inflammatory bowel diseases. These fistulas can lead to leakage of intestinal contents, infection, and malabsorption.

Apply this code when documentation clearly identifies an intestinal fistula without an underlying diagnosis of Crohn's disease or ulcerative colitis. This includes enterocutaneous fistulas, enteroenteric fistulas, or enterovesical fistulas not otherwise specified. Supporting documentation should detail the presence and location of the fistula.

• Carefully review documentation to rule out Crohn's disease or ulcerative colitis as the etiology, as specific codes exist for those conditions.
• Distinguish from fistulas of the anal/rectal region or appendix, which have their own dedicated codes.
• Ensure the fistula is not a vesicointestinal or intestinal-genital fistula, as these are classified elsewhere.