Claim application
Copy of id card
Copy of medical record
The original invoice needs a tax producer seal.
If you are hospitalized, discharge summary.
Copy of personal account number
Receipts are substitutes for invoices. Strictly speaking, receipts have no function. Why do you need a receipt when you have an invoice? I have been doing outpatient medical treatment in many units with my peers for so many years and I have never heard of issuing receipts.