Other filariases

This code represents filarial infections caused by nematodes other than Wuchereria bancrofti, Brugia malayi, Brugia timori, or Loa loa. These are parasitic worm infections transmitted by insect vectors, leading to various clinical manifestations depending on the specific filarial species involved and the affected tissues. Symptoms can range from dermatitis and subcutaneous nodules to lymphatic obstruction and ocular involvement.

Use this code when documentation specifies a filarial infection due to a species not otherwise classified in B74.0-B74.3, B74.4, or B74.9. This includes infections like onchocerciasis (river blindness) caused by Onchocerca volvulus, or dirofilariasis caused by Dirofilaria immitis (dog heartworm) when it infects humans. Documentation should clearly identify the specific filarial species or state "other filariasis."

• Ensure the documentation explicitly rules out lymphatic filariasis (Wuchereria, Brugia) and loiasis.
• If the specific filarial organism is known and has a more specific code (e.g., onchocerciasis), use that code instead.
• Always review the physician's notes for the confirmed diagnosis and the specific type of filariasis.