Which costs are you talking about - the actual appointments? Or your costs?
If its the appointments and stuff I'm not sure whether its from a central NHS fund, or your CCG or someone else (I'm sure someone can answer that though)
If you mean your costs such as your transport to said appointments then you pay that.
I’m assuming you have been paying into the system right? As far as I’m aware Ireland is divided into public and private healthcare by HSE. You have a medical card? For your prescriptions and GP visits? You are entitled to free and reduced costs to services. I guess without the medical card, it’ll be out of your pocket. So outpatient appointments will be at a reduced cost without the medical card.