This is specifically an Ireland question but it’s possible experience in other countries might help.
I have a friend who recently incurred an ambulance trip to emergency care (including an CT scan) and an overnight in the hospital for observation while in Ireland. She had to pay an initial amount of €350 for the emergency services but didn’t receive any bill from the hospital upon discharge. She’s expecting more charges and is wondering when to begin filing with her insurance company (she spoke to them while still in the hospital) . I have no experience with this. Thoughts?