Necrotizing fasciitis

This code represents a severe, rapidly progressing bacterial infection of the soft tissue and fascia, leading to tissue destruction and necrosis. It is characterized by inflammation, thrombosis of blood vessels, and often systemic toxicity. This life-threatening condition requires immediate medical and surgical intervention.

Use this code for documented cases of necrotizing fasciitis, a deep-seated infection that spreads along fascial planes. Documentation should clearly indicate the diagnosis of necrotizing fasciitis, often supported by surgical findings (e.g., "dishwater" pus, non-viable tissue) and microbiological cultures.

• Always code the underlying bacterial infection (e.g., Streptococcus, Staphylococcus) as an additional diagnosis, if identified.
• Specify the anatomical site of the necrotizing fasciitis using an additional code from categories such as L03.- (Cellulitis and acute lymphangitis) or T81.89XA (Other complications of procedures, not elsewhere classified) if it's a post-procedural complication.
• Distinguish from cellulitis or abscess, which are less severe infections and do not involve fascial necrosis.