you mean like 11-99; officer needs help, and 10-4 message received then yes. They are the same in every state. if you would like to learn them then here is a website with all of the codes. http://www.radiolabs.com/police-codes.html
Some are basic CB radio, then local issues need more secret of a code, then going to regional or national security required a code harder to break. I guess depending on the level of security "codes" change often to keep things a secret.