Malignant neoplasm of head of pancreas

This code signifies a primary cancerous tumor originating in the head of the pancreas. This is a serious condition where abnormal cells grow uncontrollably, forming a mass within the pancreatic head, which is the widest part of the pancreas and is located near the duodenum.

Use this code when documentation clearly indicates a primary malignant neoplasm specifically located in the head of the pancreas. This diagnosis is typically confirmed through imaging studies (e.g., CT, MRI) and biopsy results. It applies to newly diagnosed cases as well as ongoing treatment for this specific anatomical site.

• Always confirm the primary nature of the malignancy; do not use for metastatic disease to the pancreatic head.
• Specify laterality if applicable, though for the pancreas, this is generally not a concern.
• Review pathology reports and operative notes for precise anatomical location within the pancreas to ensure correct subsite coding.