Heterophyiasis

This code represents an infection caused by the intestinal fluke Heterophyes heterophyes. This parasitic infection is acquired through the consumption of raw or undercooked fish containing metacercariae, leading to symptoms primarily affecting the gastrointestinal tract.

Assign this code when documentation confirms a diagnosis of heterophyiasis, typically identified through microscopic examination of stool samples revealing characteristic parasite eggs. It is appropriate for patients presenting with symptoms such as abdominal pain, diarrhea, or malabsorption in endemic areas or with a history of consuming raw fish.

• Ensure the documentation specifically identifies Heterophyes heterophyes to differentiate from other trematode infections.
• Consider co-occurring gastrointestinal symptoms or complications, which may require additional codes.
• Review the patient's travel history and dietary habits for supporting evidence of exposure.