Biliary acute pancreatitis with infected necrosis

This code signifies an acute inflammatory process of the pancreas caused by gallstones, complicated by the development of infected necrotic tissue within the gland. It represents a severe form of acute pancreatitis where pancreatic tissue has died and subsequently become infected.

Use this code when documentation clearly indicates acute pancreatitis of biliary origin, confirmed by imaging (e.g., CT scan) showing pancreatic necrosis, and laboratory or microbiological evidence of infection within the necrotic areas. This typically occurs in patients presenting with severe abdominal pain, elevated pancreatic enzymes, and signs of systemic infection.

• Ensure documentation specifies both "biliary" etiology and "infected necrosis" to support this specific code.
• Distinguish from sterile necrosis (K85.11) or other etiologies of acute pancreatitis with necrosis.
• Code any associated infectious organisms (e.g., B95-B97) as secondary diagnoses if identified.