What does the balance of social security personal account of flexible employees mean?

Personal account fund balance. It is used to pay for medical expenses. The balance of social security personal account of flexible employees is used to pay out-of-pocket expenses within the policy scope of designated medical institutions and designated retail pharmacies. It can be used to pay the medical expenses incurred by insured employees and their spouses, parents and children in designated medical institutions, as well as the expenses incurred by individuals in purchasing drugs, medical devices and medical consumables in designated retail pharmacies.