Wiki removal and implantation of penile prosthesis

[suzannereed]

I have an unusual coding question. I need to code for the removal of a Dynaflex penile prosthesis where my doctor was the assistant surgeon. During the same operative session, after the removal, my doctor became the main surgeon and he then inserted a 2 piece inflatale penile prosthesis (Ambicor). Do I code the removal as 54415-80 and the insertion as 54401? It also seems to me that 54410 might be a better code, but how do I address the fact that my doctor was the assistant for the removal and the main surgeon for the implantation? Please help.