We bill for several OD's. We like Optometry billing. The most common codes are 99202, 99204, 92012, 92014, 92225, 92250, 92083.....That's the most common. There are things you need to know. For example, Medicare requires that 92250 & 92083 have a referring physician. The OD can refer to himself that the patient have the test but you have to list them as the referring physician. For example, Dr Glance sees Betty for an exam and determines during the exam that she may have glaucoma so he wants to do a 92083. He then performs the 92083 with himself as the referring dr. Sometimes they will bill E&M codes, mostly when a patient has conjunctivitis or a corneal abrasion and they have to be seen every couple days just to be looked at. Not really familiar with the vision therapy so I can't help you there. It's not too hard!