Benign neoplasm of mesothelial tissue of pleura

This code signifies a non-cancerous growth originating from the mesothelial cells lining the pleura, the membranes surrounding the lungs. These benign tumors, often referred to as benign fibrous tumors of the pleura or localized fibrous tumors, are typically slow-growing and do not metastasize.

Apply this code when documentation clearly states a benign neoplasm of the pleura, confirmed by pathology. This is appropriate for conditions like solitary fibrous tumors of the pleura that are definitively diagnosed as non-malignant. Ensure the physician's notes specify "benign" and "pleura" for accurate coding.

• Differentiate carefully from malignant pleural neoplasms (C45.0) or neoplasms of uncertain behavior (D38.1).
• Pathology reports are crucial for confirming the benign nature and mesothelial origin.
• Do not use for secondary or metastatic tumors to the pleura; these require codes for the primary site and secondary malignancy.