Necrobacillosis

This code represents necrobacillosis, a severe bacterial infection caused by Fusobacterium necrophorum. It is characterized by tissue necrosis, abscess formation, and often systemic involvement, commonly manifesting as Lemierre's syndrome (septic thrombophlebitis of the internal jugular vein). The infection can affect various body sites, including the throat, lungs, liver, and joints.

Use this code when documentation clearly indicates a diagnosis of necrobacillosis, often following a pharyngeal infection or other primary site of infection. Supporting documentation should include identification of Fusobacterium necrophorum or a clinical picture highly suggestive of this specific infection, such as Lemierre's syndrome.

• Differentiate from other anaerobic infections; this code is specific to Fusobacterium necrophorum.
• Code any associated abscesses or systemic complications (e.g., septicemia, pneumonia) separately.
• Ensure documentation specifies the causative organism or a definitive diagnosis of necrobacillosis.