Answer: D
C34.92 is the most appropriate code here because it codes for malignant neoplasm of an unspecified part of the left bronchus or lung. Here, the part of the left bronchus is not mentioned.
Option A is not correct because C34.02 codes for malignant neoplasm in the left main bronchus. The specific part of the bronchus is not mentioned so, this is not appropriate.
Option B is not correct because C34.2 codes for malignant neoplasm in the middle lobe, lung or bronchus.
Option C is not correct because C34.81 codes for malignant neoplasm in the right bronchus and lung.
