Malignant neoplasm of pleura

This code signifies a primary cancerous tumor originating in the pleura, the thin membranes lining the lungs and chest cavity. This malignancy can involve either the parietal pleura (lining the chest wall) or the visceral pleura (lining the lungs). It is distinct from secondary or metastatic tumors to the pleura.

Use this code when documentation clearly indicates a primary malignant neoplasm of the pleura, confirmed by pathology. This applies to cases of mesothelioma or other primary pleural cancers. Ensure the physician's diagnosis specifies "primary" to differentiate from metastatic disease.

• Distinguish carefully between primary pleural malignancy and metastatic disease to the pleura; for metastatic, use secondary neoplasm codes.
• Do not use this code for benign pleural tumors or effusions without confirmed malignancy.
• Consider an additional code for the specific histological type of malignancy, if known (e.g., mesothelioma).