Malignant neoplasm of rectosigmoid junction

This code signifies a cancerous tumor located at the anatomical junction where the sigmoid colon meets the rectum. This specific area is a common site for colorectal malignancies. The neoplasm is characterized by uncontrolled cell growth with the potential to invade surrounding tissues and metastasize.

Use this code when documentation clearly indicates a primary malignant neoplasm originating in the rectosigmoid junction. This diagnosis is typically established through biopsy and confirmed by pathology reports. It applies to initial diagnoses, active treatment, and follow-up for this specific cancer site.

• Ensure the documentation specifies "rectosigmoid junction" and not just "rectum" or "sigmoid colon" for accurate site specificity.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter, unless another condition is driving the primary treatment.
• Review pathology reports carefully to confirm the malignant nature and precise anatomical location.