Peripheral arterial or venous catheterisation with administration of thrombolytic or chemotherapeutic agents, by open exposure, excluding associated radiological services or preparation, and excluding after-care (other than a service associated with a service to which an item in Subgroup 11 of Group T1 or item 35317 or 35319 applies, or associated with photodynamic therapy with verteporfin) (H) (Anaes.) (Assist.)