Okay so my doc is doing a left knee surgery and all dx are for the left knee. BUT they have a prior ov 99214 with decision for surgery, however a RT knee x-ray was taken for comparison but. what can i do for an icd-9 code that would work for medical necessity.![Confused :confused: :confused:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)