Kewane Childs, a 44-year-old female, has a history of smoking cigarettes for 15 years; she quit last year. Kewane sees Dr. Cope for a dry cough, hoarse voice, and coughing up blood. Dr. Cope notes crepitation and dyspnea. Kewane is admitted to the hospital. The MRI scan and lung function tests confirm a diagnosis of neoplasm of the trachea, malignant primary. what is the diagnosis code?