Gnathostomiasis

This code represents gnathostomiasis, a parasitic infection caused by nematodes of the genus Gnathostoma. The infection typically occurs when humans consume raw or undercooked freshwater fish, eels, or frogs containing the larval stage of the parasite. Clinical manifestations vary depending on the larval migration path, often involving skin lesions, visceral larva migrans, or ocular and central nervous system involvement.

Use this code when documentation confirms a diagnosis of gnathostomiasis, often supported by a history of consuming raw aquatic animals in endemic areas and characteristic clinical findings. Definitive diagnosis may involve serological tests, biopsy of migratory lesions, or identification of the parasite. This code is appropriate for both acute and chronic presentations of the infection.

• Ensure documentation specifies gnathostomiasis to differentiate from other helminthic infections.
• Consider sequencing this code as the primary diagnosis when it is the reason for the encounter.
• Look for associated manifestations (e.g., eosinophilia, skin lesions, neurological symptoms) that may require additional codes.