It is the responsibility of government departments, hospitals, the elderly themselves or their families that the 80-year-old cannot be reimbursed for hospitalization without medical insurance information.

1. government departments: government departments are responsible for the construction and management of the medical insurance system. If the elderly do not have medical insurance information, it is caused by mistakes or omissions of government departments.

2. Hospital: As an institution providing medical services, the hospital should verify and register the medical insurance information of patients and provide relevant medical insurance services to patients.

3. The elderly themselves or their families: the elderly or their families should also verify the medical insurance information of the registered elderly and pay the medical insurance fees in time.