Influenza with other manifestations

This code signifies influenza presenting with symptoms or conditions beyond the typical acute respiratory illness, such as gastrointestinal involvement, neurological complications, or myositis. It indicates that the influenza virus is the causative agent of these additional manifestations.

Use this code when the medical record clearly documents influenza and specifies other associated systemic or localized manifestations not covered by codes for uncomplicated influenza. Documentation should explicitly link the "other manifestations" to the influenza infection.

• Do not use for influenza with pneumonia; specific codes exist for that combination.
• Requires physician documentation explicitly stating "influenza with other manifestations" or detailing the specific non-respiratory complications attributed to influenza.
• Consider sequencing this code as the primary diagnosis if the "other manifestations" are the primary reason for the encounter.