Transitory ileus of newborn

This code signifies a temporary, non-mechanical obstruction of the intestines in a newborn, characterized by absent or diminished peristalsis. It is a functional disorder where the bowel fails to propel its contents due to immaturity or other transient factors, rather than a physical blockage.

Apply this code when documentation indicates a newborn presents with symptoms of intestinal obstruction (e.g., abdominal distension, vomiting, failure to pass meconium) and diagnostic workup rules out a mechanical obstruction. This diagnosis is often made after excluding structural anomalies and typically resolves spontaneously or with conservative management.

• Ensure documentation explicitly states "transitory" or "functional" ileus to differentiate from other types of obstruction.
• Always review imaging and surgical reports to confirm the absence of a mechanical cause.
• Remember the Excludes1 note: never code with Hirschsprung's disease (Q43.1).