I work in a pain management practice and one of our providers is being trained to perform a endoscopic rhizotomy. There are not many recourses out there for coding this procedure. Unfortunately, I do not have a description of procedure yet. My provider states this is not a percutaneous approach, that an incision is made through the layers of the skin to accommodate the scope; he then will have direct visualization of the location of the rhizotomy. The procedure representative is telling my physician that CPT code 64772 would be appropriate. I have found a couple of payer policies that state to bill an endoscopic rhizotomy with CPT code 64999 or they deem it experimental all together. I am hesitant, would this approach my provider is describing qualify as MIS as he states his approach is not percutaneous. If it does, then could an open procedure code be used even though it is not in the endoscopic section?

Thank you for your advice.
Sharon