We have an outside auditor come in roughly every six months to audit a sample of E/M charts for each doc. In her findings for the exam, and based on 95 guidelines, she counts normocephalic as an organ system under musculoskeletal because she said it is considered the skull. I don't agree with that and count it as a body area, so my findings don't consistently match up with hers. Am I being too rigid in my coding? Does anyone else count this as an organ system?