Answer:
KANSAS CITY, KANSAS POLICE DEPARTMENT CODES & SIGNALS:
10-10 Out of svc. subject to call
10-13 Alarms not in service
10-15 Have prisoner in custody
10-23 2Arrived on scene
10-27 Request driver's license ck.
10-28 Request registration check
10-29 Check for loss
10-30 Does not conform
10-64 Call Your Home
There are many more at LINK
Added: Although there are many agencies that continue to use '10-codes' they vary widely from department to department and area to area, and you can never be certain that a 10-code used by one department means the same thing in another. Many department are doing away with the common usage of 10-codes and using 'plain speech' to transmit the same information.