Malignant neoplasm of transverse colon

This code identifies a primary cancerous tumor originating in the transverse segment of the large intestine. It signifies an uncontrolled growth of abnormal cells within the wall of the colon, specifically in the section that runs horizontally across the upper abdomen.

Assign this code when documentation confirms a primary malignant neoplasm located in the transverse colon. This diagnosis is typically supported by pathology reports from biopsies or resections, imaging studies (e.g., colonoscopy, CT scan), and physician notes detailing the tumor's precise anatomical location.

• Ensure the documentation clearly specifies "transverse colon" to differentiate from other colon segments.
• Do not use this code for secondary or metastatic tumors to the transverse colon; use appropriate secondary malignancy codes.
• Sequence this code as the primary diagnosis when the transverse colon malignancy is the reason for the encounter or treatment.