10-00 Officer Down
(Ten-Double Zero)
10-0 Caution
10-1 Poor Reception
Unable to Copy
10-2 Good Reception
Signal Good
OK For Now, Continue With Status Checks
10-3 Stop Transmitting
Ok, No Further Status Checks Needed
10-4 Message Received
Affirmative
Ok
Understood
10-5 Pick up an item
Relay
10-6 Busy
Out At Call
10-7 Out of Service
Ending tour of Duty
10-8 Back In Service
On Duty
Available for next Call
10-9 Repeat
Code Meaning(s)
10-10 Fight In Progress
out of service, off duty
Permission to go on common channel (car to car transmission, rather than through dispatch)
negative
transmission completed
welfare check
Other non-Criminal Event
On Break, Subject To Calls
10-11 Animal Problem
road-side check
talking too fast
alarm call
en route
10-12 Standby
visitors present
disregard
call in reports
at scene
check revocation
10-13 Advise Weather/Road Conditions
Officer in need of assistance
10-14 Suspicious Person/Report of Prowler
c

10-14 Suspicious Person/Report of Prowler
convoy or escort
10-15 Civil Disturbance
prisoner/suspect in custody
Check if Vehicle Stolen - People in or out rolling/stationary vehicle.
10-16 Domestic Disturbance
make pickup at ___
Vehicle Stolen
10-17 Meet Complainant
pick up papers at ___
urgent business
Vehicle Not Stolen
En Route
10-18 Urgent
complete assignment ASAP
anything for us?
drunk
10-19 Return to ______
Returning from Scene
Return/EnRoute To Station
10-20 Specify Location/My Location is ___

10-21 Please Call ___
Phone Call
10-22 Disregard
report to ___
send blood technician
10-23 Arrived at Location/On Scene
stand by on this frequency
status check
en route to call
sex offense
10-24 Assignment Completed
trouble at station
unit not available
direct traffic
10-25 Report to ___
Please Contact ___
Officer Needs Help

10-26 Detaining Suspect (implying "Please expedite")
check auto registration
ETA ___
disregard last info
phone residence
10-27 Request Drivers License Check
Vehicle Registration Request
I am moving to channel ___
10-28 Request Vehicle Registration Check
driver's license request
identify your station
missing person
10-29 Request Arrests/Warrants Check
time is up for contact
Stolen Vehicle
10-30 unauthorized use of radio
danger/caution
special check at ___
juvenile

10-31 crime in progress
domestic disturbance
check for local warrants
suspicious person
10-32 person with gun
fight in progress
radio check
check NCIC
DWI test
10-33 emergency, all units stand by
officer needs help
disturbance at ___
fire
10-34 riot
frequency open (cancels 10-33)
help needed
trouble at jail
correct time
meet officer
10-35 major crime alert
confidential information
suspicious person

10-36 correct time of day?
Confidential information
10-37 suspicious vehicle
identify yourself
wrecker needed at ___
shoplifter
time of day?
10-38 stopping suspicious vehicle
Traffic Stop
ambulance needed
station report satisfactory
phone communications
vandalism
10-39 run with lights & siren
your message was delivered
Backing Up____
false alarm, premises were occupied
contact officer
disturbance
10-40 run silent (no lights & siren)
false alarm, no activity, premises appears secure
please tune to channel ___
expedite
advise if available
suspicious person
dead animal
mental patient
lunch
fight

10-41 begin duty
radio test
intoxicated person
debris in street
neighbor trouble
10-42 end duty
traffic accident at ___
malicious mischief
request dispatch times
10-43 information
traffic jam at ___
request criminal history
pick up passenger
armed robbery
rescue call
10-44 permission to leave patrol
I have a message for you
transmission received
rape
traffic accident (no injury)
10-45 animal carcass
pick up officer
fatality
Drivers License/Warrant Check
fire alarm
fueling vehicle
all units in range please report
coffee break
traffic accident (injury)
non-injury accident (Kentucky)

10-46 motorist assist
motor vehicle accident (MVA)
lunch break
fuel break
wrecker
injury accident (Kentucky)
10-47 emergency road repair
disorders and family trouble
call home
missing person
drunk driver
blood run
license plate check (Kentucky)
10-48 traffic control
request criminal history
runaway juvenile
use caution
10-49 traffic light out
EMERGENCY, clear air
en route to assignment
bathroom break
any traffic
serving warrant
10-50 accident Often referred to as a 10-50 PD (Property Damage), a 10-50 PI (Personal Injury), or (rarely) 10-50 F (Fire or Fatality)
no messages
break channel
auto accident with property damage

10-51 wrecker needed
auto accident with injuries
phone message
10-52 ambulance needed
Accident with Injuries
fatal auto accident
message for assignment
alarm
10-53 road blocked
silent alarm
10-54 animals on highway
Fatal Accident
silent pursuit
car stop
10-55 intoxicated driver or DWI
security check
ambulance call

10-56 intoxicated pedestrian
Intoxicated Driver
warrant indicated
arrived at scene
10-57 hit & run accident
Intoxicated Person
narcotics
officer at pistol range
10-58 direct traffic
wrecker
DOA
teleprinter message
10-59 escort or convoy
out of car checking violation
ambulance
bomb threat
10-60 squad in vicinity
traffic stop
subject negative
what is next message number?
coffee break
assist motorist
major emergency
canceled

10-61 personnel in vicinity
subject has record - not wanted
stand by for CW traffic
clear of traffic stop
weather conditions?
lunch break
10-62 reply to message
subject possibly wanted
unable to copy, use phone
check for rising water
logged on/off
10-63 prepare to copy
subject positive
make written copy
net directed to ___
need barricades
10-64 local message
subject wanted
message for delivery
net clear, resume normal traffic
field investigator
10-65 net message assignment
assist officer re: 10-64
kidnapping

10-66 net message cancellation
subject in observation category
bathroom break
10-67 clear for next message
subject is parolee
prepare to copy
person calling for help
all units comply
10-68 dispatch message
subject in charged category
repeat dispatch
switch channels
10-69 message received
clear to copy transmission?
any calls holding for me?
sniper
10-70 fire alarm
fire
fire followup
prowler
net message
chemical spill

10-71 Advise nature of fire
10-72 Report progress on fire
10-73 Smoke report
10-74 negative
10-75 In contact with...
10-76 enroute to location
fresh coffee
10-77 ETA
10-78 need assistance
major accident with injury
request wrecker
10-79 notify coroner
bomb threat
hit & run
10-80 pursuit in progress
bomb has exploded
tower lights out
on assignment
demonstration

10-81 breathalyzer request
Burgalar Alarm
stop for interrogation
reserve hotel room
officer ___ will be at your station
at vehicle maintenance
civil disturbance/riot
10-82 reserve lodging
stop for interrogation/arrest
traffic signal out
cover assistance
10-83 work/school crossing detail
call station
units stop transmitting
at radio shop
officer in trouble
10-84 advise ETA
checking officer status
my telephone number is ___
follow-up
broken utility main
10-85 arrival delay due to ___
prepare to copy info
my address is ___
loose livestock