Idiopathic acute pancreatitis with uninfected necrosis

This code signifies an acute inflammation of the pancreas that has no identifiable cause (idiopathic) and is complicated by the presence of dead pancreatic tissue (necrosis) that is not infected. This is a severe form of acute pancreatitis where the pancreatic enzymes digest the gland itself, leading to tissue death.

Use this code when documentation clearly states acute pancreatitis is idiopathic and imaging or surgical findings confirm uninfected pancreatic necrosis. This diagnosis typically follows a thorough workup to rule out common etiologies such as gallstones or alcohol. The physician's final diagnosis must explicitly state "idiopathic" and "uninfected necrosis."

• Distinguish from other forms of acute pancreatitis (e.g., K85.1-K85.8) and infected necrosis (K85.02).
• Ensure the documentation explicitly states "idiopathic" and "uninfected necrosis" for accurate code assignment.
• Sequence this code as the primary diagnosis when it is the reason for the encounter.