Other specified functional intestinal disorders

This code represents functional intestinal disorders that do not fit into more specific categories like irritable bowel syndrome (IBS) or constipation. These are conditions where there is a disturbance in the normal functioning of the intestines without an identifiable structural or biochemical abnormality. Symptoms often include abdominal pain, bloating, and altered bowel habits.

Use this code when the physician's documentation clearly indicates a functional intestinal disorder that is not otherwise specified or classifiable to a more precise ICD-10-CM code. This applies to conditions like functional abdominal pain syndrome, functional diarrhea, or functional bloating when IBS has been ruled out. Documentation should explicitly state the functional nature of the disorder.

• Ensure documentation specifies "functional" and rules out other more specific intestinal disorders.
• Do not use this code if a more specific functional intestinal disorder, such as IBS (K58.-), is documented.
• Consider sequencing this code after any associated symptoms if the underlying functional disorder is not definitively diagnosed.