TRANSLUMINAL STENT INSERTION, 1 or more stents (not drug-eluting), with or without associated balloon dilatation, for 1 carotid artery, percutaneous (not direct), with or without the use of an embolic protection device, in patients who: - meet the indications for carotid endarterectomy; and - have medical or surgical comorbidities that would make them at high risk of perioperative complications from carotid endarterectomy, excluding associated radiological services or preparation, and excluding aftercare (Anaes.) (Assist.)