Common Radio Codes used in California

These are the most common codes. Agency-specific codes, when known, are listed following these codes:
This list is not all-inclusive. I welcome any additions or corrections that you may have.

Code	Description
10-01	Reception is poor
10-02	Reception is good
10-03	Stop transmitting/Change channels
10-04	Message received
10-05	Relay message
10-06	Busy, (Out on call)
10-07	Out of service, Leaving air
10-08	In service/available for assignment
10-09	Repeat last transmission
10-10	Out of service - radio on
10-11	Talk slower
10-12	Visitors present
10-13	Road/Weather Conditions
10-14	Escort detail
10-15	Prisoner
10-16	Pick up person (prisoner)
10-17	Pick up documents
10-18	Complete assignment quickly
10-19	Return/returning to station
10-20	Location
10-21	Telephone
10-22	Disregard
10-23	Stand by
10-24	Trouble at station
10-25	Do you have contact with ____?
10-27	Driver's license check
10-28	Vehicle registration request
10-29	Check wants/warrants
10-30	Subject has no record, not wanted
10-31	Subject has record, not wanted (CHP Attempt Suicide)
10-32	Subject wanted
10-33	Emergency traffic on the air
10-34	Resume normal broadcasting
10-35	Confidential Information
10-36	Time check
10-37	Tow truck needed
10-38	Ambulance needed
10-39	Message delivered
10-40	Request phone contact
10-41	Switch to channel __
10-42	At residence
10-43	Call a doctor
10-44	`Or ________`
10-45	Service equipment
10-46	Stand by
10-48	Accident - non-injury
10-49	Accident - injuries
10-50	Subject under the influence of narcotics
10-51	Subject is drunk
10-52	Resuscitator is needed
10-53	Person down
10-54	Possible dead body
10-55	Coroner's case
10-56	Suicide
10-57	Firearm discharge
10-58	Garbage complaint
10-59	Security check/Malicious mischief
10-60	Lock out
10-61	Miscellaneous public service
10-62	Meet a citizen
10-63	Prepare to copy
10-64	Found property
10-65	Missing person
10-66	Suspicious person
10-67	Person calling for help
10-68	Call for police made via telephone
10-70	Prowler
10-71	Shooting
10-72	Knifing
10-73	How do you receive?
10-79	Bomb threat
10-80	Explosion
10-81	At station (or substation)
10-86	Any traffic?
10-87	Meet the officer at _____.
10-88	Fill with the officer/Assume your post
10-91	Animal
10-95	Out of vehicle-pedestrian
10-96	Out of vehicle-pedestrian send backup
10-97	Arriving at assignment
10-98	Assignment completed
10-99	Emergency
10-100	Nature Call (restroom break)
11-24	Abandoned automobile
11-25	Traffic hazard
11-25A	Traffic Hazard - Animal
11-25C	Traffic Hazard - Center Divider
11-25D	Traffic Hazard - Debris/Objects
11-25L	Traffic Hazard - Load
11-25P	Traffic Hazard - Pedestrian on Freeway
11-25V	Traffic Hazard - Vehicle
11-26	Disabled Vehicle - Occupied
11-27	10-27 with the driver being held
11-28	10-28 with the driver being held
11-40	Advise if an ambulance is needed
11-41	An ambulance is needed
11-42	No ambulance is needed
11-44	Possible Fatality
11-48	Furnish transportation
11-51	Escort
11-52	Funeral detail
11-54	Suspicious vehicle
11-55	Officer is being followed by automobile
11-56	Officer if being followed by auto containing dangerous persons
11-57	An unidentified auto appeared at the scene of the assignment
11-58	Radio traffic is being monitored. Phone all non-routine messages
11-59	Give intensive attention to high hazard/business areas
11-60	Attack in a high hazard area
11-65	Signal light is out
11-66	Traffic Control Signal Out of Order
11-71	Fire
11-78	Aircraft accident
11-79	Traffic Accident - Ambulance Responding
11-80	Traffic Accident - major injuries
11-81	Traffic Accident - minor injuries
11-82	Traffic Accident - no injuries
11-83	Traffic Accident - No Details
11-84	Direct traffic
11-85	Tow truck required
11-94	Pedestrian stop
11-95	Routine traffic stop
11-96	Checking a suspicious vehicle
11-97	Time/security check on patrol vehicles
11-98	Meet officer
11-99	Officer needs help
Code 1	Do so at your convenience
Code 2	Urgent
Code 3	Emergency/lights and sirens
Code 4	No further assistance is needed
Code 5	Stakeout
Code 6	Out on suspect
Code 7	Out of service (meal break)
Code 8	Request cover/backup
Code 9	Set up roadblock
Code 10	Bomb threat
Code 12	Notify news media
Code 20	Media Alert - Major Incident
Code 33	Emergency - clear radio channel
D-K	Intoxicated
D-O-A	Dead On Arrival
E-T-O-H	Intoxicated
G-O-A	Gone On Arrival

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10-60	File Number
11-10	Request Backup/Unit to assist
11-11	Request Backup to respond Code 3

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