Computed tomography—scan of colon for exclusion or diagnosis of colorectal neoplasia in a symptomatic or high risk patient if:(a) one or more of the following applies:(i) the patient has had an incomplete colonoscopy in the 3 months before the scan;(ii) there is a high grade colonic obstruction;(iii) the service is requested by a specialist or consultant physician who performs colonoscopies in the practice of the specialist’s or consultant physician’s speciality; and(b) the service is not a service to which item 56301, 56307, 56401, 56407, 56409, 56412, 56501, 56507, 56801, 56807 or 57001 applies (R) (Anaes.)