A48.0

HCC Category Mapping

What This Code Means

Gas gangrene is a serious and rapidly spreading infection of muscle tissue caused by bacteria that produce gas bubbles in the affected area, typically occurring after an injury or surgical wound. This is a life-threatening condition that requires immediate medical attention and often emergency surgery.

Coding Tips

• •Gas gangrene is caused by Clostridium perfringens and other gas-producing bacteria; document the causative organism if identified, as this may affect treatment decisions
• •This code should be paired with codes indicating the site of infection (such as a wound code) and any associated complications; consider whether this is a primary diagnosis or secondary to trauma

Clinical Significance

Gas gangrene (clostridial myonecrosis) is a rapidly progressive, life-threatening necrotizing soft tissue infection caused by Clostridium perfringens and other gas-producing Clostridium species. It destroys muscle tissue with remarkable speed and produces gas within tissues. Without emergent surgical debridement and high-dose penicillin with clindamycin, mortality approaches 100%.

Documentation Requirements

• ✓Clinical findings of crepitus (gas in tissues), rapidly spreading necrosis, and severe pain disproportionate to examination
• ✓Imaging showing gas in soft tissues (X-ray or CT demonstrating subcutaneous/intramuscular gas)
• ✓Surgical findings documenting devitalized muscle tissue and gas formation
• ✓Wound culture or tissue culture identifying Clostridium species
• ✓Rapid surgical debridement or amputation documented with timing

Commonly Confused Codes