Intestinal myiasis

This code represents the infestation of the human intestinal tract by the larval stage (maggots) of various fly species. These larvae can be ingested accidentally through contaminated food or water, or less commonly, through direct invasion. The condition can range from asymptomatic to causing significant gastrointestinal symptoms.

Use this code when documentation confirms the presence of fly larvae within the patient's intestines. This typically occurs following ingestion of contaminated food or water. Supporting documentation should include laboratory findings identifying the larvae or direct visualization during endoscopic procedures.

• Ensure documentation specifies the intestinal tract as the site of myiasis; other sites of myiasis are coded differently.
• Do not confuse with other parasitic infestations; this code is specific to fly larvae.
• Consider co-reporting codes for associated symptoms (e.g., abdominal pain, diarrhea) if documented and treated.