Malignant neoplasm of descending colon

This code signifies a cancerous tumor originating in the descending colon, which is the segment of the large intestine extending from the splenic flexure to the sigmoid colon. This malignancy involves uncontrolled cell growth within the tissues of this specific colonic region.

Assign this code when documentation clearly indicates a primary malignant neoplasm located in the descending colon. This is appropriate for initial diagnoses, active treatment, or follow-up care for this specific cancer. Supporting documentation includes pathology reports, operative notes, and physician progress notes specifying the tumor's location.

• Differentiate from other colonic segments; ensure the documentation explicitly states "descending colon."
• Do not use for benign polyps or secondary metastatic lesions to the descending colon.
• Sequence as the primary diagnosis when the reason for the encounter is related to the descending colon malignancy.