Loiasis

This code represents loiasis, a parasitic infection caused by the filarial nematode Loa loa. It is characterized by transient subcutaneous swellings (Calabar swellings) and the migration of adult worms across the conjunctiva of the eye. The infection is transmitted through the bite of deerflies (Chrysops species).

Assign this code when documentation confirms a diagnosis of loiasis, typically based on clinical presentation, microscopic identification of microfilariae in blood smears, or visualization of the adult worm. This code is appropriate for both active infection and sequelae directly attributable to loiasis.

• Ensure documentation specifies Loa loa infection to differentiate from other filarial diseases.
• Consider co-occurring conditions such as eosinophilia, which is common with parasitic infections.
• Do not confuse with other helminthic infections; specificity is key for accurate reporting.