To be honest I've only seen codes that reduce the cost of a new product.
I've not seen a code in relation to a Repair costing @SteveBish
The Samsung repair service will assess the phone and then provide a costing.
Daily Driver > Samsung Galaxy s²² Ultra 256Gb in Phantom Black.
The advice I offer is my own and does not represent Samsung’s position.
I'm here to help. " This is the way. "