165 Malignant neoplasm of other and ill-defined sites within the respiratory system and intrathoracic organs 
165.0 Malignant neoplasm of upper respiratory tract part unspecified convert 165.0 to ICD-10-CM 165.8 Malignant neoplasm of other sites within the respiratory system and intrathoracic organs convert 165.8 to ICD-10-CM
165.9 Malignant neoplasm of ill-defined sites within the respiratory system convert 165.9 to ICD-10-CM