When to know what I owe for Procedure is FINAL

Hello r/HealthInsurance! I recently got a colonoscopy done, it was diagnostic as I was having symptoms and I’m also in my late 30’s. My insurance is through my employer.

I was told by the facility before the procedure that all the 4 separate charges for the colonoscopy, anesthesiologist fee, doctor’s fee and the biopsy would be fully covered by my health insurance because I had met my deductible.

Before I even scheduled the procedure, I put aside money for all 4 charges in case they would not be covered. I am new to dealing with procedures after meeting an insurance deductible and I’m honestly wary of spending the money I set aside because of stories I’ve read of people still having to pay for diagnostic colonscopies. I’m scared of getting a bill out of nowhere like I have in the past. I will need the money I have set aside very soon but if I spend it then get a bill, it would be difficult for me financially.

My question is basically when is it safe to know that I won’t be paying any money to any provider. Would it be after my insurance company processes the claims and say that I owe $0 ? Or should I wait for the claim to be processed by insurance and for the EOB to be provided and then call the different providers to confirm I don’t owe them anything? Any advice is appreciated!