The 99211 is a physician level that may be use when ancillary personnel are see a patient in followup to a physicians orders while the physician is on site - incident to. You cannot use a 99211 for an injection or blood draw, because the visit is scheduled as per the physician order so we already know the patient is coming in and why, the nurses work is an intergral part of the injection or blood draw service so it may not be split out for separate reimbursement, and since a code exists for the injection and blood collection, we must use those codes. I have a memo regarding the 99211 if you would like a copy or just google up the 99211 and injections subject and you will get a ton of information. I hope this helps.