All information is provided in the above link - French version also available.
Please find here below forms to use for medical expenses reimbursement requests
- English version: 
Uniqa - Claim for the reimbursement of medical expenses.pdf
- French version: Uniqa - Demande de remboursement des frais médicaux.pdf
- Electronic submission: myUNIQA | UNIQA Suisse
Other CHIS Forms
Please find here other CHIS forms (claiming for reimbursement)