Filariasis, unspecified

This code represents an infection caused by filarial nematodes, a type of parasitic roundworm, when the specific type of filariasis is not documented or known. These infections can manifest with a variety of symptoms affecting the lymphatic system, subcutaneous tissues, or serous cavities, depending on the species involved.

This code is appropriate when a diagnosis of filariasis is confirmed or suspected, but the medical record lacks specificity regarding the causative filarial species (e.g., lymphatic filariasis, onchocerciasis, loiasis). It should be used when documentation simply states "filariasis" without further detail.

• Avoid using this code if a more specific type of filariasis is documented; always code to the highest level of specificity.
• Review the medical record for any clues that might indicate a specific type of filariasis, such as geographical exposure or specific clinical manifestations.
• Consider querying the provider if the documentation is ambiguous and a more precise diagnosis could be obtained.