Malignant neoplasm of pancreatic duct

This code signifies a primary cancerous tumor originating within the pancreatic duct system. This type of malignancy is a form of pancreatic adenocarcinoma, specifically identifying its anatomical origin within the ducts that transport digestive enzymes.

Apply this code when documentation clearly specifies a primary malignant neoplasm located within the pancreatic duct. This is typically supported by pathology reports confirming adenocarcinoma and imaging studies or surgical findings localizing the tumor to the duct.

• Differentiate from other pancreatic malignancies, such as those of the head, body, or tail, which have distinct codes.
• Ensure the documentation specifies "malignant" and not a benign or uncertain neoplasm of the pancreatic duct.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter, unless a complication or metastasis is being treated.