Malignant neoplasm of middle third of esophagus

This code signifies a cancerous tumor originating in the middle section of the esophagus. This region typically extends from the level of the carina to the gastroesophageal junction, encompassing the thoracic esophagus. The malignancy involves uncontrolled growth of abnormal cells within the esophageal tissue.

Use this code when documentation clearly specifies a primary malignant neoplasm located in the middle third of the esophagus. This diagnosis is typically confirmed through biopsy and imaging studies. Ensure the physician's notes explicitly state the tumor's location within this specific esophageal segment.

• Differentiate from neoplasms of the upper (C15.3) or lower (C15.5) third of the esophagus; precise anatomical documentation is crucial.
• Always sequence the primary malignancy first, followed by any secondary malignancies or complications.
• Review pathology reports and operative notes for definitive tumor location and histological type.