90-95%. Because the cost of cerebrovascular surgery ranges from more than 40,000 to 80,000 yuan, according to the "Social Insurance Law of the People's Republic of China", 85% of the cost is reimbursed for less than 0-40,000 yuan, and 90% is reimbursed for less than 40,000-80,000 yuan. %, and reimbursement is carried out at a rate of 95% for more than 80,000 yuan. The part of the medical expenses of the insured persons that should be paid by the basic medical insurance fund shall be settled directly by the social insurance agency with medical institutions and pharmaceutical business units. The social insurance administrative department and the health administrative department should establish a medical expense settlement system for medical treatment in other places to facilitate insured persons to enjoy basic medical insurance benefits.