I am billing for a rheumatologist who sees patients with osteoporosis. Patient will have a bone density study done, is an established patient and comes in for followup to discuss bone density results. Dr reviews bone density report, adjusts/renews patients RX's but does not do an actual exam. He wants to bill a 99213 and I explained he has to do an actual exam. He feels there is nothing to examine. Everything I read for 99212-99215 requires exam? He feels his time is worth something. Is this where time becomes the factor on the E&M used? Please advise and thank you!