2006 ICD-9-CM Volume 1 Diagnosis Codes > Neoplasms 140-239 > Malignant Neoplasm Of Respiratory And Intrathoracic Organs 160-165 > 164 Malignant neoplasm of thymus heart and mediastinum 165 Malignant neoplasm of other and ill-defined sites within the respiratory system and intrathoracic organs 160 Malignant neoplasm of nasal cavities middle ear and accessory sinuses 161 Malignant neoplasm of larynx 162 Malignant neoplasm of trachea bronchus and lung 163 Malignant neoplasm of pleura