Wiki CPT Index heading for hardware (pins, wires) removal?

[shergess1@gmail.com]

I am studying for the CPC exam. The question was on implant removal of 2 screws from an ankle. I looked up "removal, implant, ankle" and the index indicates 27704. The correct answer is listed as 20680. What heading should I have looked up in the index?

 

[LisaAlonso23]

Removal>Fixation Device