donttalktosh

Hi, is it possible to replace the ignition barrel on a 1998 Berlingo diesel van without having to have the key/swich re-programmed? I have a new key (programmed in by Citroen dealer) but I think the barrel is badly worn as the key takes a lot of wriggling to turn. If I order a barrel from Citroen using my code details will I need to get them to re-code the vehicle or will it work without? Thanks in anticipation