Benign neoplasm of mediastinum

This code signifies the presence of a non-cancerous tumor originating within the mediastinum, the central compartment of the thoracic cavity. These benign growths can arise from various tissues, including nerve, fat, lymphatic, or connective tissue, and do not spread to other parts of the body.

Use this code when diagnostic imaging (e.g., CT scan, MRI) or biopsy confirms a benign mass located within the mediastinal space. Documentation should clearly state the benign nature of the neoplasm and its mediastinal location, often specified as anterior, middle, or posterior mediastinum.

• Ensure documentation explicitly states "benign" to differentiate from malignant mediastinal neoplasms.
• Do not confuse with cysts of the mediastinum (e.g., congenital mediastinal cyst), which are coded elsewhere.
• If the specific type of benign neoplasm is known (e.g., lipoma, neurofibroma), consider if a more specific ICD-9-CM code exists within the 210-229 series.