Bancroftian filariasis

This code represents an infection caused by the parasitic nematode Wuchereria bancrofti, leading to lymphatic filariasis. The infection primarily affects the lymphatic system, causing lymphedema, hydrocele, and elephantiasis in chronic cases. It is a vector-borne disease transmitted by mosquitoes.

Use this code for confirmed diagnoses of Bancroftian filariasis, typically identified through microscopic examination of blood smears for microfilariae or antigen detection tests. It is appropriate for both acute and chronic manifestations of the disease, including early lymphatic involvement or advanced elephantiasis. Documentation should clearly state the specific filarial species or confirm lymphatic filariasis in an endemic region.

• Differentiate from other forms of filariasis (e.g., Brugian filariasis) which have distinct ICD-9-CM codes.
• Consider additional codes for specific manifestations, such as lymphedema (e.g., 457.1) or hydrocele (e.g., 603.9), if documented.
• Ensure documentation specifies the causative organism or clinical context strongly points to Wuchereria bancrofti for accurate coding.