I think he's looking for a listing of all the 10 codes and their meaning. That is a loaded question because not all agencies use identical 10 codes. Here in northeast Wisconsin it is primarily the APCO ten codes that are used, but it may be different for the agencies you listen to.
djeplett is correct, most of WI uses the APCO 10 code list, but there are so many variances between each individual county that it would be almost impossible to compile a master list or all of them..