Malignant neoplasm of anterior mediastinum

This code signifies a cancerous tumor originating in the anterior compartment of the mediastinum. This region is located behind the sternum and in front of the heart, containing structures such as the thymus gland, lymph nodes, and great vessels. The malignancy can arise from any of these tissues.

Apply this code when documentation explicitly states a primary malignant neoplasm located in the anterior mediastinum. This diagnosis is typically confirmed by biopsy and imaging studies (e.g., CT scan, MRI). Use this code for the initial diagnosis and subsequent treatment of the primary tumor.

• Distinguish from secondary or metastatic mediastinal involvement; this code is for primary malignancy.
• Review pathology reports carefully to confirm the specific mediastinal compartment.
• Consider additional codes for the specific histology of the neoplasm if known and documented.