Hi, addicted, welcome to the forums! Sorry for your bad surprise. And I hate to tell you, but it is possible to have an $11K bill for an outpatient procedure. There can be charges for the hospital itself, surgeon or physician, anesthesia, radiology, lab, pathology, and on and on. Hope it's just a screw-up, though.
Your best bet is to approach the hospital and any physician offices (the OC's) first. Often medical collection accounts are still held by the OC's, and they can pull them back from the CA's.
Did you have medical insurance at the time? If so, call them before you call the OC's and find out what claims were filed with them (if they ever were), and what was paid.
There are lots of members here that are really good with medical collections. I'm hoping they'll post in here soon. It would be a good idea to edit your subject line and add "--medical collections!".
So that it would say something like: Hit a bump in the road --medical collections!
* Credit is a wonderful servant, but a terrible master. * Who's the boss --you or your credit?
FICO's: EQ 781 - TU 793 - EX 779 (from PSECU) - Done credit hunting; having fun with credit gardening. - EQ 590 on 5/14/2007