Here's the lay description of percutaneous screw fixation:
Percutaneous skeletal fixation is fracture treatment which can apply to either open (compound) or closed fractures or joint injuries (dislocations). In this procedure, the fracture fragments are not visualized, but fixation (e.g., pins) is placed across the fracture site, usually performed under x-ray imaging.
Percutaneous pinning involves the placement of pins (e.g., Steinmann) through the skin and into a fractured bone. Direct exposure of the fracture is not required. This type of pinning is most likely performed on non-displaced fractures or a closed reduction has already been performed.
So, what I have seen is no, there is no specific code.