Fournier gangrene

This code represents Fournier gangrene, a rare but severe and rapidly progressive necrotizing fasciitis affecting the perineal, perianal, or genital regions. It is a polymicrobial infection characterized by thrombosis of subcutaneous vessels, leading to tissue necrosis and systemic toxicity.

Use this code when documentation clearly indicates a diagnosis of Fournier gangrene, typically presenting with acute onset of pain, swelling, erythema, and crepitus in the affected areas. Supporting documentation often includes surgical findings of necrotic tissue, microbiological culture results, and clinical signs of sepsis.

• Always ensure documentation specifies "Fournier gangrene" to differentiate from other forms of necrotizing fasciitis.
• Code any underlying conditions contributing to the patient's immunocompromised state (e.g., diabetes mellitus, alcoholism) as secondary diagnoses.
• Do not confuse with other localized infections of the genitourinary or perineal area; Fournier gangrene implies a widespread, necrotizing process.