Anyone dealing or dealt with BCBS for a revsion

just looking for some help or advise from some people about a RnY revision to a DS.  about getting pre-approved through the insurance BCBS - the office, (BCBS ) asked me to get pre-approved because it is a revision how would i even go about doing that! Thanks in advance!

Do you have BCBS of Michigan - or another state?  If it's Michigan, your doctor should know if you meet the medical critiera.  If it is not - call your customer service to find out if it's covered and what the criteria is.