Endoscopy with laser therapy, for the treatment of one or more of the following: (a) neoplasia; (b) benign vascular lesions; (c) strictures of the gastrointestinal tract; (d) tumorous overgrowth through or over oesophageal stents; (e) peptic ulcers; (f) angiodysplasia; (g) gastric antral vascular ectasia; (h) post-polypectomy bleeding; other than a service associated with a service to which item 30473 or 30478 applies (Anaes.)