Small intestinal fungal overgrowth

This code describes an abnormal proliferation of fungal organisms, primarily yeast, within the small intestine. This overgrowth can lead to gastrointestinal symptoms such as bloating, abdominal pain, diarrhea, and malabsorption, often mimicking bacterial overgrowth.

Use this code when documentation explicitly states "small intestinal fungal overgrowth" or "SIFO." This diagnosis is typically made based on clinical suspicion combined with diagnostic testing, such as a breath test or small bowel aspirate culture confirming fungal presence.

• Ensure documentation clearly distinguishes fungal overgrowth from bacterial overgrowth (SIBO).
• Do not use this code for candidiasis of the small intestine unless specifically documented as an overgrowth.
• Consider co-reporting with codes for underlying conditions contributing to SIFO, such as motility disorders or immunosuppression.