What is the reason for the sudden invalidation of social security card?

Legal analysis: There are four reasons why the social security card cannot be used: arrears, wrong password, card damage, and medical institution settlement system failure. If it is not paid in time or in arrears, the social security fee will be paid monthly, and the overdue payment or deduction of the account balance will affect the normal medical reimbursement. At the beginning of each month, all enterprises, institutions or companies should check whether the unit account is enough to pay the social security expenses of this month; Urban and rural residents insured by the local community (neighborhood) is responsible for the deduction.

Legal basis: People's Republic of China (PRC) Social Insurance Law.

Article 4 Employers and individuals who pay social insurance premiums according to law in People's Republic of China (PRC) have the right to inquire about payment records and personal rights and interests records, and ask social insurance agencies to provide social insurance consultation and other related services. Individuals enjoy social insurance benefits according to law and have the right to supervise the payment of their own units.

Fifth people's governments at or above the county level shall incorporate social insurance into the national economic and social development plan. The state raises social insurance funds through multiple channels. People's governments at or above the county level shall give necessary financial support to social insurance. The state supports social insurance through preferential tax policies.