Malignant neoplasm of ascending colon

This code signifies the presence of a cancerous tumor originating in the ascending segment of the large intestine. This malignancy is characterized by uncontrolled cell growth and has the potential to invade surrounding tissues and metastasize to distant sites.

Apply this code when documentation clearly states a primary malignant neoplasm located specifically in the ascending colon. This diagnosis is typically confirmed through biopsy and imaging studies.

• Ensure the documentation specifies "ascending colon" to differentiate from other colon segments.
• Do not use for benign polyps or secondary metastatic lesions to the ascending colon.
• Sequence as the primary diagnosis when the malignancy is the reason for the encounter or treatment.