http://www.provide.net/~bfield/10codes.html

10- 1 Signal Weak

10- 2 Signal Good

10- 3 Stop Transmitting

10- 4 Affirmative (OK)

10- 5 Relay (To)

10- 6 Busy

10- 7 Out of Service

10- 8 In Service

10- 9 Repeat (Say Again)

10-10 Negative

10-11 _____ On Duty

10-12 Stand By (Stop)

10-13 Existing Conditions

10-14 Message/Information

10-15 Message Delivered

10-16 Reply to Message

10-17 Enroute

10-18 Urgent

10-19 (In) Contact

10-20 Location

10-21 Call (____) by Phone

10-22 Disregard

10-23 Arrived at Scene

10-24 Assignment Completed

10-25 Report to (Meet)

10-26 Estimated Time of Arrival

10-27 License/Permit Information

10-28 Ownership Information (Vehicle)

10-29 Records Check

10-30 Danger/Caution

10-31 Pick Up

10-32 _____ Units Needed (Specify)

10-33 Help Me Quickly

10-34 Time

-- Anonymous, October 14, 2001

Answers

APCO = Association of Public-safety Communications Officials

There has been some speculation that because the terrorists chose 9- 11, then perhaps dates in October might have some significance. Posted, strictly for your interest, and to answer a couple of questions, here are the common "10 codes." If you listen to police scanners, you may hear somewhat different ones -- they can vary by local, but these are the "standard" ones.

-- Anonymous, October 14, 2001

Yep, ours are a bit different and go up to 10-97 :) The ones that get my immediate attention are: 10-67 - dead body
10-43 - felony car chase


-- Anonymous, October 14, 2001