C34 - Malignant neoplasm of bronchus and lung
C34.3 - Malignant neoplasm of lower lobe, bronchus or lung
C34.30 - Malignant neoplasm of lower lobe, unspecified bronchus or lung
C34.31 - Malignant neoplasm of lower lobe, right bronchus or lung
C34.32 - Malignant neoplasm of lower lobe, left bronchus or lung