Pulmonology Coding Alert

Question: An 86-year-old male with a background of pulmonary fibrosis and asthma was admitted to hospital with a sixmonth history of a productive cough, fever and increasing dyspnea. He produced approximately one teaspoon of white sputum per day but noticed that the cough was exacerbated significantly after eating dry food. His x-ray on admission showed evidence of pulmonary fibrosis and aspiration pneumonia, but did not obviously highlight a cause for his current medical admission. At meal times he experienced slight dysphagia and coughed up some of the ingested food including his medications. A gastroeneterologist was consulted who investigated him further by performing a barium swallow which revealed a pharyngeal pouch (Zenker's diverticulum). Incidentally, a chest x-ray performed after the barium swallow highlighted the pharyngeal pouch containing the ingested barium that was not as obvious on his admission chest x-ray. What CPT® and ICD-9 codes should the pulmonologist report to Medicare [...]