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I've routinely been billing E/M with a therapy add on, but I recently found out (don't worry, I'm a new grad) that you can't use therapy add on codes if you're billing E/M based on time. My appointments are long enough to include 16 minutes of therapy. I'm just not familiar with MDM documentation, though I'm sure I've been doing it forever in residency. I have a HPI, ROS (10 parts), MSE, review labs (if available), with A/P based on problems, with therapy, primarily supportive. However, what line should I throw in at the end to show that I'm properly managing someone to justify a 99214+90833? Or am I overthinking this?