Face, contour restoration of one region, for the correction of deformity using autogenous bone or cartilage, if the deformity:(a) is secondary to congenital absence of tissue; or(b) has arisen from:(i) trauma (other than from previous cosmetic surgery); or(ii) a diagnosed pathological process;other than a service associated with a service to which item 45644 or 45717 (alveolar bone grafting) applies (H) (Anaes.) (Assist.)