My experience has been the CPT codes change a lot once the procedure is complete. I even had an estimate for a surgery at $1800, but the final bill (including

My experience has been the CPT codes change a lot once the procedure is complete. I even had an estimate for a surgery at $1800, but the final bill (including everything like anesthesia), heavily discounted because I'm in a healthshare (not considered insurance), came out to ~$10k (instead of ~$18k without the discount). Nothing went wrong/crazy in the surgery--and it was a fairly standard one. Once I paid the 10k, several months later I got ~$600 back saying I'd over paid, but they didn't include an explanation. Hospital pricing is a strange beast.