Small intestinal bacterial overgrowth, unspecified

This code identifies a diagnosis of small intestinal bacterial overgrowth (SIBO) where the specific type or cause of the overgrowth is not documented. SIBO is characterized by an excessive amount of bacteria in the small intestine, leading to symptoms such as bloating, abdominal pain, diarrhea, and malabsorption.

Use this code when the provider's documentation clearly states a diagnosis of SIBO but does not specify the type (e.g., hydrogen-predominant, methane-predominant) or the underlying cause. This code is appropriate when diagnostic testing (e.g., breath test) confirms SIBO, but further specificity is lacking in the medical record.

• Only use this code when the documentation explicitly states "unspecified" or provides insufficient detail to assign a more specific SIBO code.
• Query the provider for additional specificity regarding the type or cause of SIBO if available, to allow for more precise coding.
• Consider co-occurring conditions such as irritable bowel syndrome (IBS) or celiac disease, which may be associated with SIBO, and code them separately if documented.