Data comparison, medical record review and personnel return visit. According to the relevant data of medical insurance, we can know that the investigation of lying about trauma to defraud medical insurance reimbursement and commitment is data comparison, medical record review and personnel return visit. It is illegal to defraud medical insurance reimbursement. According to the Regulations on the Supervision and Administration of the Use of Medical Insurance Funds, if the insured violates the relevant regulations for the purpose of defrauding insurance money and causes losses to the medical insurance fund, the administrative department of medical insurance will order him to return it; Suspend the online settlement of medical expenses for 3 months to 12 months, and impose a fine of more than 2 times and less than 5 times on those who cheat insurance. If a crime is constituted, criminal responsibility shall be investigated according to law.