Professional attendance by a medical practitioner in the practice of anaesthesia for a consultation on a patient undergoing advanced surgery or who has complex medical problems involving an exhaustive history and comprehensive examination of multiple systems , the formulation of a written patient management plan following discussion with relevant health care professionals and/or the patient, involving medical planning of high complexity documented in the patient notes - and of more than 45 minutes duration, not being a service associated with a service to which items 2801 - 3000 apply