I need help coding temporary placement of neurostimulator leads. The rep says to use 64561, 64561-59. Is this correct, or should I use the -51 modifier. Also, I have had denials when I filed a 99213 e/m visit to remove the temps, as the person had decided to have them placed permanently. Please help! Any input would be greatly appreciated. My office is new to coding and billing for the procedure and we have had confusing results.