What happens when I forget to bring my medical insurance card and forget to check out and go home? Will it be useless next time?

Of course. But you must first call the local medical insurance center to register, and then go back to the medical insurance center with the hospitalization receipt for reimbursement.

If you see an emergency, you can go to the district medical insurance center with invoices, medical record cards, medical insurance cards, ID cards and other documents afterwards, and submit an expense account after examination. This reimbursement method is called "sporadic reimbursement for outpatient and emergency departments"; If you had seen the clinic at that time, there was only one thing to report, that is, the medical insurance card was damaged, but it must be confirmed by the hospital certificate. Therefore, it is recommended to go to the hospital for emergency treatment for citizens who have forgotten to bring them, or who have not brought their medical insurance cards for sudden illness.