Major medical assistance, or major medical insurance, refers to the reimbursement of some of the high cost of medical expenses, in order to alleviate the financial burden on the patient. The cochlear implant, as an expensive medical device, is eligible for reimbursement by the medical insurance, and belongs to the scope of the medical assistance. Patients who undergo surgery in a hospital designated for medical insurance, keep all the documents and invoices related to the treatment, and fill in the reimbursement application form according to the requirements of the insurance company.