Robot in neurosurgery is different from in urology/gen surg/gyn. it just holds things very still in a precise place. The robot is good for cases when you need to do the same thing multiple times because it will quickly drive to where you need the next screw or lead, like long-segment spine fusions or stereoEEG. It takes upfront planning and setup which makes it less useful for short cases.
Codes are not different because surgery is not different
Some people are doing outpatient (even awake) MIS TLIF which can be done with a robot. Placing 4 screws without a robot takes about 10 minutes. Not worth the hassle IMO
Can also do DBS with a robot in an outpatient-ish setting but I don't think that's what you're getting at