Other Vincent's infections

This code represents a bacterial infection caused by a synergistic fusospirochetal complex, typically affecting mucous membranes beyond the oral cavity. It is characterized by ulcerative lesions, often with a grayish pseudomembrane, and can lead to tissue necrosis. This condition is distinct from the more common Vincent's angina (necrotizing ulcerative gingivitis/periodontitis).

Apply this code when documentation specifies a Vincent's infection occurring in sites other than the tonsils, pharynx, or oral cavity. Examples include necrotizing ulcerative balanitis, vulvitis, or skin infections where the fusospirochetal etiology is confirmed or strongly suspected. The medical record should clearly indicate the affected anatomical site and the characteristic features of a Vincent's infection.

• Do not use this code for Vincent's angina (oral cavity/pharyngeal infections); refer to codes in the K05-K06 range for those conditions.
• Always code the specific anatomical site of the infection first, if a more precise code is available, followed by this code as a secondary diagnosis to specify the etiology.
• Ensure documentation differentiates this "other" form from the more common oral manifestations to avoid miscoding.