Malignant neoplasm of middle lobe, bronchus or lung

This code signifies a primary cancerous tumor originating in the middle lobe of the lung or within the bronchus supplying this lobe. It indicates a malignant growth, meaning it has the potential to invade surrounding tissues and metastasize.

Apply this code when documentation confirms a primary malignant neoplasm specifically located in the middle lobe of the lung. This diagnosis is typically established through biopsy, imaging studies (e.g., CT scan, MRI), and pathology reports.

• Ensure the documentation specifies "middle lobe" for accurate site specificity.
• Distinguish from secondary (metastatic) lung cancers, which are coded differently.
• Consider additional codes for the specific histological type of the neoplasm (e.g., adenocarcinoma, squamous cell carcinoma) if known.