Chikungunya virus disease

This code identifies the acute febrile illness caused by the Chikungunya virus, characterized by severe arthralgia, fever, rash, and myalgia. It represents the active disease state, typically following a mosquito bite from an infected Aedes species.

Assign this code when a patient presents with a confirmed diagnosis of Chikungunya virus infection, either through laboratory testing (e.g., PCR, serology) or strong clinical suspicion in an endemic area. Documentation should clearly indicate the presence of the active disease.

• Do not use this code for sequelae or chronic manifestations of Chikungunya; refer to specific codes for those conditions.
• Ensure documentation specifies "with" or "without" neurological complications if applicable, as separate codes exist.
• Consider an additional code for the specific mosquito bite (W57.XXXA) if documented as the cause.