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Discuss police ten
codes and law enforcement ten codes
in our new
Private Investigation Forum
Ten-codes, or
10-codes, are codes used in two-way voice radio communication as numeric code
words for frequently used messages. Ten-codes are used particularly by
law
enforcement and in Citizen's Band (CB) radio transmissions. They originated in the United States
law
enforcement community before World War II. The first set of 10-codes was
published by the Association of Public-Safety Communications Officials in
1940. Ten codes were invented to help reduce use of speech on the radio. Use
of the codes was expanded in 1974 by the Association of Public Safety
Communication Officials (APCO), allow for brevity and standardization of
message traffic.
There is no universal, official set of 10-codes, and the
meanings of a particular 10-code can vary between one police jurisdiction and
another. While law enforcement "ten codes" were intended to be a concise, and standardized
system, the proliferation of different meanings has rendered it somewhat useless for
situations where people from different agencies and jurisdictions need to
communicate. In 2005, the United States Federal Emergency
Management Agency (FEMA) discouraged the use of ten-codes and other codes
due to their high variability in meaning. The U.S. Department of Homeland
Security reportedly has plans to do away with 10-codes as well.
Some organizations and municipalities also use other codes in addition to
ten-codes. For example, the California Highway Patrol uses "eleven-codes", and the Port Authority Police uses
"eight codes".
Amateur radio hams do not use ten-codes. Instead they use Q codes,
which are derived from Morse code. Ten codes are highly discouraged in
amateur radio use, though they are sometimes used by novice operators.
Following is a list of
police ten codes:
- 10-1 poor
reception
- 10-2 good
reception
- 10-3 stop
transmitting
- 10-4 message
received, affirmative, ok
- 10-5 relay this
information to ___.
- 10-6 busy
- 10-7 out of
service
- 10-8 in service
- 10-9 please repeat
your message
- 10-10 negative
- 10-12 standby
- 10-13 civilians
present and listening
- 10-15 en route to
station with suspect
- 10-18 urgent
- 10-19 return to
station
- 10-20 specify
location/my location is ___.
- 10-21 place a
phone call to ___.
- 10-22 disregard
- 10-23 stand by on
this frequency (also "On scene" in some areas)
- 10-27 vehicle
registration request
- 10-28 arrests / warrants
on driver's license
- 10-29 arrests /
warrants on the vehicle
- 10-32 gun
- 10-33 emergency
traffic follows, hold routine messages
- 10-34 frequency
open (cancels 10-33)
- 10-36 what is the
correct time of day?
- 10-39 false alarm,
premises was occupied
- 10-40 false alarm,
no activity, premises appears secure
- 10-41 begin watch
- 10-42 end watch
- 10-45 fueling
vehicle
- 10-49 en route to
assignment
- 10-50 accident
- 10-51 tow truck
needed
- 10-52 ambulance
needed
- 10-53 road blocked
at ___.
- 10-54 animals on
highway
- 10-55 security
check
- 10-57
hit-and-run accident
- 10-58 direct
traffic
- 10-59 escort
- 10-60 squad in
vicinity, lock-out
- 10-61 personnel in
area
- 10-62 reply to
message
- 10-63 clear to
copy info?
- 10-64 message for
delivery
- 10-65 net message
assignment
- 10-66 net message
cancellation
- 10-67 person
calling for help
- 10-68 dispatch
message
- 10-69 message
received
- 10-70 prowler,
fire alarm
- 10-71 gun
involved, advise nature of fire
- 10-72 shooting,
fire progress report
- 10-73 smoke report
- 10-74 negative
- 10-75 in contact
with ___.
- 10-76 en route
- 10-77
ETA ___.
- 10-78 need
assistance
- 10-79 bomb threat,
coroner's case
- 10-80 bomb has
exploded
- 10-81
breathalyzer report
- 10-82 reserve
lodging
- 10-83 work school
crossing at ___.
- 10-84 if meeting
___, advise ETA
- 10-85 delay due to
___.
- 10-86 officer
on-duty
- 10-87 pickup
- 10-88 present
phone number of ___.
- 10-89 bomb threat
- 10-90 bank alarm
at ___.
- 10-91 pick up
prisoner
- 10-92 improperly
parked vehicle
- 10-93 blockage
- 10-94
drag racing
- 10-95
prisoner/subject in custody
- 10-96 psych
patient
- 10-97 check signal
("On Scene" in CA and other areas)
- 10-98 prison/jail
break
- 10-99
wanted/stolen record
- 10-100 dead body
- 10-200 alarm
In addition to police and law
enforcement ten codes, some departments use 11 codes or "eleven codes".
Following is a sample of 11 codes:
- 11-7 Prowler
- 11-10 Take a report
- 11-24 Abandoned vehicle
- 11-25 Traffic hazard
- 11-26 Disabled vehicle
- 11-27 Driver's license
check, Rush
- 11-28 Vehicle registration
check, Rush
- 11-29 Clear, no warrants
- 11-30 Missing person
- 11-41 Ambulance
- 11-44 Fatality
- 11-45 Suicide
- 11-48 Transport
- 11-50 Field interrogation
- 11-51 Security check
- 11-79 Traffic Collision -
ambulance responding
- 11-80 Traffic Collision -
major injury
- 11-81 Traffic Collision -
minor injury
- 11-82 Traffic Collision -
non-injury
- 11-83 Traffic Collision -
no details
- 11-84 Direct traffic
- 11-85 Tow truck
- 11-86 Special assignment
- 11-98 Meet with...
- 11-99 Officer needs help
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top of the list of Ten Codes
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