Problem
An adult female with a failed cochlear prosthesis was, admitted for removal under general anesthia, and through an open approach, the lef inner ear multiple channel cochlear device was dissected away from its placement and removed the prosthesis site tissue appeared quite necrotic and a biopsy was taken. Following the biopsy the necrotic tissue was electro cauterized. What is the procedure code? What is the proedure description? What is the medical code? What is the carry over line?