Proof of health insurance - how does it work?
Proof of health insurance is required upon enrolment. This is due to the fact that students are normally compulsorily insured in the statutory student health insurance scheme, similar to employees who have the status of dependent employment. The university is obliged to check this situation and therefore requires confirmation from a statutory health insurance provider on this matter. For the digital notification, the health insurance company then needs the key number of the university, which you should find in the enrolment documents.
Even if you would like to be privately insured or covered by state aid, you must then register with a statutory health insurance provider in order to be exempted from compulsory statutory insurance. If you are already thirty years old at the time of enrolment, the check is not necessary, but you should still be insured (e.g. "voluntarily insured" by law).