Question: Illinois Subscriber Answer: You should be able to report both services separately. You'll use 94375 (Respiratory flow volume loop) for the loop with the appropriate-level code for the E/M (99201-99215, Office or other outpatient visit for the evaluation and management ...). Remember: Before coding a separate E/M service, make absolutely sure that the physician provided all of the components of the E/M: history, examination, and medical decision-making.