post op pain nerve block placement documentation

I'm in need of some help. I have sent a request to NCCI for help also.

I'm in search of information or a link for proper documentation requirements for the placement of post op pain nerve block. I have a case and all the documentation states is: "Epidural placed per MDA".

From my previous experience this should not be billable for post op pain.

Thanks

post op pain nerve block placement documentation