Pseudocyst of pancreas

This diagnosis code signifies a fluid collection near the pancreas that lacks an epithelial lining, distinguishing it from a true cyst. It typically arises as a complication of acute or chronic pancreatitis, or pancreatic trauma, and contains pancreatic enzymes, necrotic debris, and blood.

Apply this code when documentation clearly indicates a pancreatic pseudocyst, often identified via imaging studies such as CT or MRI. This condition is frequently associated with a history of pancreatitis or abdominal injury.

• Differentiate from true pancreatic cysts (e.g., serous cystadenoma, mucinous cystic neoplasm) which have an epithelial lining.
• Code any underlying acute or chronic pancreatitis first, as the pseudocyst is often a complication.
• Ensure documentation specifies "pseudocyst" and not just "pancreatic cyst" to avoid miscoding.