Where can you find a list of 10 codes?

A google search will turn up lots of ten-code lists, but there is no standard ten-code. Each communications center modifies it for their own use. In most of California, a "10-16" is a request to pick up something (such as the dispatcher's lunch), but in Nevada, it's a domestic dispute. One place you can often find a current, locally relevant set of radio codes is your local Radio Shack store. They're popular among people who listen to scanners as a hobby.