Remember that you don't need two separate diagnoses for chemo plus E/M. "Seize Every Code When Chemotherapy Results in Adverse Reaction" in Oncology and Hematology Coding Alert, vol. 12, no. 2, discussed CMS's view on coding E/M with chemotherapy, as published in MLN Matters article SE0462 (
www.cms.gov/MLNMattersArticles/downloads/SE0462.pdf). To be sure you've got the information you need to apply Medicare's rules appropriately, here are some extra pointers to consider before you code. Don't Fret Over Distinct ICD-9 Codes The MLN Matters article states, "If a patient has a significant adverse reaction to drugs during a chemotherapy session and the physician intervenes, the physician can bill for a visit in addition to the chemotherapy administration services." In addition, if the patient had already seen the physician on the same day and develops an adverse reaction during therapy, you may be entitled to a higher-level visit or prolonged services as the article [...]