If it is a foreign patient, medical insurance in different places will not be reimbursed. Generally, it is necessary to apply for referral at the medical insurance place. If it is approved, go to a public medical insurance hospital in a different place and return to the place where the medical insurance is located with various documents and hospital-related certificates to apply for manual reimbursement (consult the medical insurance department for specific requirements, procedures and list).
Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.