Malignant neoplasm of pleura, unspecified

This code signifies the presence of a cancerous tumor originating in the pleura, the membranes lining the lungs and chest cavity, where the specific type or primary site of the malignancy is not documented. It indicates an uncharacterized primary pleural malignancy.

Use this code when documentation confirms a malignant neoplasm of the pleura but lacks further specificity regarding its histological type (e.g., mesothelioma) or whether it is primary or secondary. This code is appropriate when the physician's diagnosis is simply "malignant neoplasm of pleura, unspecified."

• Avoid using this code if a more specific diagnosis, such as mesothelioma (e.g., 163.0-163.8), is documented.
• Always query the physician for greater specificity if possible, especially regarding the primary site and histology.
• This code should be sequenced as the primary diagnosis when the pleural malignancy is the reason for the encounter and no further detail is available.