You'd likely be rated under an analogous code for neuralgia (8520?). The key to a maximum rating is to ensure your symptoms are adequately documented to MATCH the verbiage in the VA Schedule.
[FONT="]Sciatic nerve.[/FONT]
[FONT="] [/FONT]
[FONT="]8520[/FONT][FONT="] Paralysis of:[/FONT]
[FONT="] [/FONT]
[FONT="] Complete; the foot dangles and drops, no active movement possible [/FONT]
[FONT="] of muscles below the knee, flexion of knee weakened or (very [/FONT]
[FONT="] rarely) lost....................................................................................................... 80[/FONT]
[FONT="] Incomplete:[/FONT]
[FONT="] Severe, with marked muscular atrophy............................................................ 60[/FONT]
[FONT="] Moderately severe .......................................................................................... 40[/FONT]
[FONT="] Moderate......................................................................................................... 20[/FONT]
[FONT="] Mild ............................................................................................................ 10[/FONT]
If your doctor really wants to help, make sure he documents all your symptoms adequately and also includes range of motion measurements.