Malignant neoplasm of posterior mediastinum

This code signifies the presence of a cancerous tumor originating in the posterior mediastinum, the anatomical space located behind the heart and great vessels, anterior to the vertebral column. This area typically contains structures such as the esophagus, descending aorta, thoracic duct, and sympathetic chain. The malignancy can arise from any of the tissues within this region.

Apply this code when documentation confirms a primary malignant neoplasm specifically located in the posterior mediastinum. This diagnosis is typically established through imaging studies (e.g., CT, MRI) and confirmed by biopsy and histopathological examination. Use this code for primary tumors, not metastatic lesions to this site.

• Ensure the documentation clearly specifies "posterior mediastinum" and not a more general mediastinal location.
• Distinguish between primary malignant neoplasms and secondary (metastatic) malignancies to the posterior mediastinum; a different code would be used for secondary sites.
• Review pathology reports for definitive confirmation of malignancy and primary site.