Why don't college students have medical insurance cards?

The school did not provide medical insurance services, and went to the hospital at its own expense, and did not go through the medical insurance procedures.

1. The school didn't provide medical insurance service: the school didn't sign a contract with the medical insurance institution and didn't provide medical insurance service for the students at school.

2. Self-funded medical treatment: College students choose to seek medical treatment at their own expense without using medical insurance cards. Direct payment of medical expenses, not reimbursement through medical insurance.

3. Failing to go through the medical insurance procedures: Students failed to go through the medical insurance procedures in time, resulting in failing to obtain a medical insurance card.