Does my hospitalisation insurance cover medical expenses when I am hospitalised because of corona?

When you are hospitalised showing the known symptoms (fever, muscular pain and shortness of breath), medical expenses can be eligible for reimbursement according to the policy conditions of your hospitalisation guarantee. 

We kindly ask you to declare your admission to hospital as soon as possible.

In case you only stayed at the emergency department and were not actually hospitalised directly afterwards, then there is no coverage by your hospitalisation guarantee. Purely ambulatory (outpatient) medical expenses without a stay at the hospital are only covered in case you are affiliated to an ambulatory guarantee.