Biliary acute pancreatitis without necrosis or infection

This code signifies an acute inflammatory condition of the pancreas caused by gallstones or biliary sludge obstructing the pancreatic duct, without evidence of pancreatic necrosis or secondary infection. It represents a milder form of acute pancreatitis where the pancreatic tissue remains viable and uninfected.

Apply this code when documentation clearly indicates acute pancreatitis with an identified biliary etiology, and imaging or clinical findings confirm the absence of necrosis or infection. This diagnosis is typically supported by elevated pancreatic enzymes (amylase, lipase), characteristic abdominal pain, and imaging (e.g., ultrasound, CT scan) showing pancreatic inflammation and gallstones, but no necrotic areas or abscesses.

• Ensure documentation explicitly states "biliary" as the cause and "without necrosis or infection."
• Do not use this code if imaging or pathology reports indicate pancreatic necrosis, even if the cause is biliary.
• Sequence this code as the primary diagnosis when it is the reason for the encounter, followed by codes for the underlying biliary obstruction (e.g., cholelithiasis).