List of 10 Police Codes (2023)

What are the 10 Police Codes?

The 10 Police Codes are signals that police officers, law enforcement officers, and government agencies use to speak in two-way radio communications. Codes are numbers that correspond to words, phrases, and messages commonly used in law enforcement work. In addition, certain code variations are used by private individuals in Citizens Band (CB) radio transmissions.

Police officers constantly communicate with headquarters, other officers, support departments, the local jail, county correctional facilities and others. First and foremost, codes help streamline communication and add an element of secrecy. In addition, they help to protect communication with the general public.

How did the 10 police codes come about?

Originally, Police 10 codes were used in the United States law enforcement community prior to World War II. In 1940, the Association of Public Safety Communication Officers (APC) published the first official set of 10 police codes. These radio signals were invented to reduce the use of voice on police radio. In addition, the codes enable a certain degree of privacy in radio transmissions. This means that someone must know the meaning of the signals in order to understand the discussion.

In 1974, the Association of Public Safety Communication Officers expanded the use of police radio codes to make them shorter and to standardize message traffic.

Official set of ten police codes

There are no truly universal or official police codes10.Therefore, the meaning of a particular code or scanner signal may vary from one law enforcement jurisdiction to another. For example, police departments in the state of California may use different codes and signals than those in the states of Florida, New York, or Texas.

(Video) Police 10 Codes. What they mean and easy way to learn them.

Originally, the 10 Law Enforcement Signals were intended to be a concise, standardized system to help officers and officers speak on the radio. However, the proliferation of various meanings has rendered it somewhat useless. Most common in situations where people from different authorities and jurisdictions need to communicate with each other.

In 2005, the United States Federal Emergency Management Agency (FEMA) began discouraging the use of Ten codes and other radio signals by law enforcement. This was due to its high variability in meaning between departments and agencies. Therefore, the Department of Homeland Security may stop using the marks.


Some organizations and municipalities also use other types of police radio codes. For example, the California Highway Patrol (CHP) uses "Elf-Codes', and the port police use 'eight codes'. You set these up to have a new and unique set of characters.

Many police departments across the country use regular English over the radio to ensure clear communication. This relieves the officials and the disposition. This means they don't have to mentally go back to the list of ten codes to decode a transmission. However, this approach removes any secrecy or privacy from the radio transmission.

Also, the meaning of the unique codes can vary between police officers and other public service entities. For example, emergency medical services (EMS), fire brigades and other police units.

List of 10 police codes

Below is a list of some of the 10 most common police codes. Again, it's important to note that there is no universal set of ten police codes. Usage varies by department, state, and agency. If you know of anything that we may have missed, please comment below.

(Video) How Police 10 Codes Work (Pt. 1)

10-1 = poor reception
10-2 = Good reception
10-3 = end transmission
10-4 = message received, confirming, OK
10-5 = Please forward this information (name of person, officer, etc.)
10-6 = The clerk is busy
10-7 = Out of service, not available
10-8 = In service
10-9 = Please repeat (Please repeat the message)
10-10 = negative (no)
10- 11 = dog (or other animal)
10-12 = Standby
10-13 = civilians present and listening (this allows the dispatcher or other offices not to release sensitive information over the radio)
10-14 = Prowler report
10-15 = With the suspect on the way to the train station
10-16 = Domestic problem
10-17 = Knowing the Whistleblower
10-18 = Urgent matter
10-19 = return to the train station
10-20 = specify location/my location is (location name)
10-21 = Make a call to (person's name)
10-22 = Ignore
10-23 = Standby on this frequency (Also, 1023 means "local" in some areas)
10-24 = task complete
10-25 = introduce yourself personally (meeting)
10-26 = suspect in custody
10-27 = Vehicle Registration Application
10-28 = arrests/warrants found on driver's license
10-29 = Arrests/Arrest Warrants found in vehicle
10-30 = Unnecessary use of police radio
10-31 = Crime or criminal activity in progress
10-32 = weapon/gun
10-33 = follow emergency traffic; keep routine messages
10-34 = radio frequency open (erases message 10-33)
10-35 = Serious crime warning
10-36 = What is the correct time of day?
10-37 = Suspicious vehicle (investigate)
10-38 = Suspicious vehicle (stops)
10-39 = false alarm; the premises were occupied
10-40 = False alarm, no activity, facility appears safe
10-41 = Startuhr
10-42 = end of clock. Police departments primarily use the end of guard signal when an officer is killed. For example, either on duty or due to illness. The ceremony is usually performed by the dispatcher making a final call to the officer, followed by a moment of silence.
10-43 = information
10-44 = permission to exit
10-45 = tank truck/vehicle
10-46 = support motorists
10-47 = Emergency road repair required in
10-48 = Standard traffic repair required
10-49 = On the way to an assignment
10-50 = accident
10-51 = Crane needed
10-52 = ambulance needed
10-53 = road closed at (place name)
10-54 = animals on the street
10-55 = security check (also used for a drunk driver)
10-56 = pedestrian drunk
10-57 = hit and run accident
10-58 = direct traffic
10-59 = Escort
10-60 = nearby squad, lockout
10-61 = personnel in the area
10-62 = reply to message
10-63 = Delete to copy data?
10-64 = message for delivery
10-65 = network message assignment
10-66 = Cancel network message
10-67 = person asking for help
10-68 = shipping message
10-69 = Confirm message received
10-70 = drifter, fire alarm
10-71 = Weapon involved, report type of fire
10-72 = Shooting and Fire Progress Report
10-73 = smoke alarm
10-74 = negative, no
10-75 = In contact with (name)
10-76 = officer is on his way/on his way
10-77 = Estimated Time of Arrival (ETA), time until
10-78 = Need help
10-79 = bomb threat
10-80 = The bomb has exploded
10-81 = Breathalyzer report
10-82 = book accommodation
10-83 = Inter-school job at (location)
10-84 = Yes_, Notify ETA
10-85 = delay because of (reason)
10-86 = police officer on duty
10-87 = pickup
10-88 = Find the current phone number of (person)
10-89 = bomb threat
10-90 = bank alarm sounds at (location)
10-91 = Pick up a prisoner
10-92 = Improperly parked vehicle
10-93 = Block
10-94 = drag race
10-95 = prisoner/custody
10-96 = psychiatric patient, a person exhibiting insane or psychotic behavior
10-97 = verification signal (1097 also means "On Stage" in California and other areas)
10-98 = prison break or jailbreak
10-99 = Record wanted/stolen

Other police codes 10

10-100 = body found
10-101 = What is your status?
10-106 = insurance
10-200 = Alarm
10-999 = Officer Down / The officer needs help immediately. This is an SOS alert that requires immediate attention. In a situation where an officer is down, all available units will respond.

Note: sometimes they are formatted as "code number" instead of using the number 10 as a prefix. For example, in some situations the officer would not say, "I'm 10-7," meaning he's "off duty." Instead, the officer said, "Code seven." Again, the type of use can vary depending on the department.

List of police scanner codes

Below is a sample list ofPolice scanner codes. Keep in mind that these may vary by department, city, and geographic area.

187 = Murder
207 = Kidnapping (207a is a kidnapping attempt)
211 = burglary (also scanner code 211a means burglary with alarm, 211s is with silent alarm)
217 = Attack with intent to kill
5150 = Mental case
10851 = Carjacking / stolen vehicle
10852 = Vehicle tampering
20001 = hit and run crime
20002 = hit and run - administrative offense
20007 = Hit and Run - Unattended
21958 = Drunk pedestrian on the street
22350 = Over speeding
22500 = Illegal parking
23101 = drunk driving - with injuries
23102 = drunk driving
23103 = Reckless driver
23104 = Reckless driver
23105 = Driver under the influence of drugs
23109 = Motorsport
23110 = Person throwing objects at vehicles
23151 = drunk driving - with injuries
23152 = Drunk driver

In addition to the scanner numeric codes, departments can assign a meaning to a color (e.g., blue, red, purple, etc.). For example, Code Blue means “emergency” in some departments, similar to hospitals. Also, the code purple stands for "Gang Activity". Likewise, there is no universal standard for color codes.

(Video) 10 Codes

Use of the phonetic alphabet in radio communications

The International Phonetic Alphabet (IPA) is a system of alphabetic phonetic notation based primarily on the Latin alphabet. The International Phonetic Association developed thePhonetisches Alphabetstandardize the representation of the sounds of the spoken language.

Police, military, private investigators, and civilians use the phonetic alphabet during radio communications. These individuals use the alphabet to ensure clear communication when speaking to other police officers, dispatches, or officials. For example, when transmitting a product description, a tag number or an address. Commonly used in radio communications.

military phonetic alphabet

Officers can use the military phonetic alphabet when speaking on the radio. The use of the military phonetic alphabet helps all parties understand the correct spelling of names, streets, buildings, etc. Below is a table explaining the letters of the phonetic alphabet and their pronunciation:

A = Alfa (AL fah)
B = Bravo (BRAH VOH)
C =Charlie (CHAR Lee)
D = Delta (DELL tah)
E =Eco (ECK oh)
F = Foxtrott (trote FOKS)
G = Golf (GOLF)
H = Hotel (hoh DIGA)
I = If (IN dee ah)
J = Julieta (JUDIO Lee ETT)
K = Kilo (TECLA loh)
L = Lima (LEE mah)
M = Mike (MIKE)
N = November (after VEM ber)
O = Oscar (OSS-Cah)
P = Papa (pah PAH)
Q = Quebec (keh BECK)
R = Romeo (ROW me oh)
S = Sierra (via AIRE rah)
T = Tango (TANGir)
U = Uniform (You need form
V = Victor (VIK tah)
W = Whisky (tecla WISS)
X = X-rays (ECKS RAYS)
Y = Yankee
Z = Zulu (GOOD)

civil phonetic alphabet

The following is a version of the phonetic alphabet for civilian use:

  • A = Adam
  • B = boy
  • C = Carlos
  • D=David
  • E = Eduard
  • F = Frank
  • G = Jörg
  • H = Enrique
  • I = go
  • J = Juan
  • k = king
  • L = Lincoln
  • M = Maria
  • N = Nora
  • The = ocean
  • P = Paulus
  • q = queen
  • R = Roberto
  • S = Sam
  • T = Tom
  • U = Einhorn
  • V = winner
  • W = Guillermo
  • X = X-rays
  • Y = gelb
  • Z = Zebra

List of acronyms used by police officers in policing

In addition, officials can useacronymshorten communication. The following are some of the more common acronyms and terms (we're still expanding this part of our list, so if you know any more, please leave a comment below):

(Video) 37 Secret Police Codes No One Understands

  • ADW = Deadly Weapon Attack
  • AKA = Also known as
  • AG = Fiscal General
  • ATF = Alcohol Tobacco and Firearms
  • B&E – Break Out and Enter
  • BOLO = Attention
  • CHP = California Highway Patrol
  • CRT = Code-Response-Team
  • CI = Confidential Informant
  • CO = Commanding Officer
  • DA = district tax
  • DEA = Drug Enforcement Agency
  • DL =driver's license
  • DOA = Death on Arrival
  • DOC = correctional facility
  • DMV= motor vehicle office
  • DEA = Drug Enforcement Agency
  • Date of Birth = Date of Birth
  • DUI = Driving under the influence
  • DWI = Driving while intoxicated
  • ETA = Estimated Time of Arrival (also commonly used to say "how long")
  • EOW = end of clock
  • FBI= Federal Criminal Police Office
  • FTA = No Show
  • GTA - Grand Theft Auto
  • OIS = Officer Involved Shooting
  • PD = Police Department
  • PnP = party in game. Most often it refers to an ongoing party that involves the use of drugs such as methamphetamine or ecstasy.
  • RHD = Department of Robbery and Homicide
  • PR = reporter
  • SRT = Special Response Team
  • SWAT = Special Weapons and Tactics
  • VIN= chassis number

Other types of codes and signals

Occasionally departments use code names and terms to indicate a unit covering a specific geographic area, e.g. patrol 1, patrol 2, etc. For example, the codename "patrol 1" can refer to a specific bar or section. a city, municipality, etc.

Otherwise, there may be a special designation for supervisors, motorcycle units, SWAT teams, or even naval units.

In addition, departments can use code names to represent different segments, e.g. B. Squad 1, Unit 1, Team 3, etc. These may indicate the specific group responding to a call or the squad at a crime scene.

amateur funker

Ham radio operators don't use ten codes. Instead, they use so-called Q-codes, which are derived from Morse code. The use of ten codes is strongly discouraged in amateur radio, especially among experienced professionals. However, they are sometimes used by novice traders.

Questions, Comments and Suggestions

If you have any questions about the ten police codes or are looking for the meaning of something specific, please leave a comment below. If you also want to take this information with you in a PDF eBook, visit theBooksSection.

(Video) Police Codes Explained | Tutorial

More information

If you are interested in the work of the police, find out more about themgearjvehiclesUsed by police officers on duty. Also view a list of related resourcesProsecution, associations and more.


What is a 10 10 code? ›

10-10 Off duty. 10-10A Off duty at home. 10-11 Identify this frequency. 10-12 Visitors are present (be discrete).

What are 10 codes called? ›

Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by law enforcement and in Citizens Band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code.

Why do they say 10-4? ›

10-4 is an affirmative signal: it means “OK.” The ten-codes are credited to Illinois State Police Communications Director Charles Hopper who created them between 1937–40 for use in radio communications among cops. Ten-Four Day ~ for decades, Oct 4 has been a day to salute radio operators.

What does 10 five mean? ›

Message received; OK; acknowledged. 10-47. Lost/Missing person. 10-5. Relay message.

What does 10-4 mean in police code? ›

Even if you're green in the scannerverse, you probably already use police codes in jest. The most obvious example is 10-4, which is simply used to signify acknowledgment.

What is a 10/22 code? ›

What does police code 10-22 mean? Police code 10-22 means Disregard / Cancel last message.

What does 86 mean in police code? ›

The term is now more generally used to mean getting rid of someone or something. In the 1970s, its meaning expanded to refer to murder.

What does 10 9 mean in police code? ›

Description. 10-9. Repeat last message. What does police code 10-9 mean? Police code 10-9 means Repeat last message.

What is a 666 police code? ›

CODE 666 is a procedure used by Solano, Yolo and Napa County law enforcement agencies to facilitate apprehension of crime suspects who are fleeing by vehicle through the use of an intersection observation plan.

What does 10 20 mean? ›

The phrase essentially means, “What is your location?” or “Identify your position,” but is a corrupted phrase from the original “10-20” used by law enforcement to verbally encode their radio transmissions so that non-police listeners would not easily discover police operations, as well as to communicate quicker and ...

What does a 10 15 mean? ›

Description. 10-15. Prisoner in custody / Message delivered. What does police code 10-15 mean? Police code 10-15 means Prisoner in custody / Message delivered.

What are some secret code words? ›

Although code words used will vary, some common examples are:
  • Charlie, Charlie, Charlie – security threat on the boat.
  • Echo, Echo, Echo – imminent danger ahead e.g. collision with another ship, high winds at port.
  • Red Party – fire onboard.
  • Operation Bright Star – medical emergency, urgent assistance required.
25 May 2017

What is the easiest code? ›

HTML, which stands for HyperText Markup Language, is one of the most common programming languages for beginners, as it's often seen as the most straightforward programming language to learn.

What are the 5 most famous codes that have been broken? ›

Post navigation
  • The Babington Plot – 16th Century England. ...
  • The Zimmermann Telegram – 1917, World War I. ...
  • The Battle of Midway – 1942, World War II. ...
  • Hieroglyphics – 3200 BC to AD 400, Ancient Egypt. ...
  • Copiale Cipher – 1760 to 1780, Wolfenbüttel, Germany. ...
  • Poe's Challenge – 1839, Philadelphia, US. ...
  • Chaocipher – 1953, Maryland, US.
6 Feb 2013

What does 10-10 mean in police code? ›

Police code 10-10 means Negative / Fight in progress.

What are the 3 types of codes? ›

Very broadly speaking, every application on a website consists of three different types of code. These types are: feature code, infrastructure code, and reliability code.

Are all 10 codes the same? ›

There is no genuinely universal or official set of police 10 codes. Therefore, the meaning of a particular scanner code or signal can vary between one police jurisdiction and another.

What does 10 1 mean? ›

WHAT DOES 10-1 MEAN ON A FILM SET? On a film set, 10-1 is the walkie talkie code for the bathroom. While literally meaning you need to pee, using as this as a catch-all saves your film crew from t.m.i.

Why is Roger used for OK? ›

"Roger" was "phonetic" for "R" (received and understood". In radio communication, a "spelling alphabet" (often mistakenly called a "phonetic alphabet) is used to avoid confusion between similarly sounding letters. In the previously used US spelling alphabet, R was Roger, which in radio voice procedure means "Received".

What is a code 1? ›

Code 1 - Immediate risk of death to a person. Proceed lights and sirens.

What does code 7 mean? ›

What does police radio Code 7 mean? Police radio Code 7 means Out of service to eat.

What a 10 50 means? ›

Police code 10-50 means Officer welfare check / under influence of drugs.

What does 126 mean for cops? ›

Intercept suspects

What's a 211 in cop talk? ›

What does penal code 211 mean? Penal code 211 means Armed robbery.

What does 1035 mean in police code? ›

What does police code 10-35 mean? Police code 10-35 means Confidential information or open window.

What is a 987 police code? ›

In a noncapital case, if the defendant appears for arraignment without counsel, he or she shall be informed by the court that it is his or her right to have counsel before being arraigned, and shall be asked if he or she desires the assistance of counsel. ?

What does 10 0 mean? ›

Police code 10-0 means Use caution.

What is 10 7 in police code? ›

What does police code 10-7 mean? Police code 10-7 means Out of service (completely).

What does 10 42 mean? ›

One “Ten Code” that is not as familiar to the general public is “10-42”. This particular code is used to indicate an officer's end of tour.

What does 10 99 mean? ›

Check (Test) Signal. 10-98. Prison / Jail Break. 10-99. Wanted / Stolen Indicated.

What's a 5 0 in police code? ›

Typically shouted as a warning of approaching police by lookouts at a site of drug-dealing etc.

What is a 10 8 code? ›

What does police code 10-8 mean? Police code 10-8 means In service.

What's the code 11? ›

Code 11 is a barcode symbology developed by Intermec in 1977. It is used primarily in telecommunications. The symbol can encode any length string consisting of the digits 0–9 and the dash character (-).

What is code 4 mean? ›

Code 4 Meaning. “Code 4” means everything is under control or the scene is safe. It indicates the officers are now in charge of the situation they were called to. For us it means when Code 4 is working we make sure everyone is safe and we are in control.

What is a 917 police code? ›

These codes are: 915 (“homeless- related”), 919 (“sit/lie”), 601 (“trespasser”), and 917 (“suspicious person”).

What does 1097 mean? ›

CHP Glossary of Commonly Used Abbreviations
106- BUSY
1097- ON SCENE
9 more rows

What's a 419 in police code? ›

419 (police code), police hundred code code for dead human body.

What does 1010 mean? ›

According to numerology, this specific repeating number means that your guardian angel is letting you know something positive is coming your way! The angel number 1010 is associated with joy, purity, unconditional love and abundance!

What does 1010 mean single? ›

1010 meaning in Love is telling you that everything will be okay and it's all going according to your plans and desires. 1010 means that the best times are coming and you should expect good things from love and life right now because 1010 Angel Number is sending them to you.

What does 10 32 mean? ›

10-32 Threads

The number “10” is a size designator with no numerical meaning. The number “32” refers to 32 threads per inch. You can identify a 10-32 screw by measuring the diameter at exactly 3/16″ (4.76 mm).

What does a 10 56 mean? ›

What does police code 10-56 mean? Police code 10-56 means Intoxicated pedestrian / Suicide.

What is a 411 police code? ›

211—Community services and information. 311—Municipal government services. 411—Directory assistance*

What does 31 mean in police code? ›

Vehicle Code 31 VC - False Information to a Police Officer.

What does 10 20 mean in CB talk? ›

If you hear a truck driver say “10-20” on their CB radio, it's just another way to say “Your current location.”

What is the most unbreakable code? ›

Q: Have any codes been created which are currently unbreakable? There is only one provably unbreakable code called the Vernam cypher created during World War II to defeat the Germans. It uses genuinely random information to create an initial key.

What does 10 10 mean in CB talk? ›

10-7: Out of service. 10-8: In service. 10-9: Repeat Message. 10-10: Transmission completed, standing by. 10-11: Talking too rapidly.

What does a 10-8 mean? ›

10-8. In service. 10-52. Auto accident — with injury. 10-9.

What does a 10 32 mean? ›

The number “10” is simply a size designator. The number “32” refers to the 32 threads per inch. You can identify a 10-32 screw by measuring the diameter with a ruler at exactly 3/16″ (0.1875″).

What's a 10 13 mean? ›

What does police code 10-13 mean? Police code 10-13 means Advise weather and road conditions.

What does rubber duck mean in CB talk? ›

"Rubber Duck" – The first vehicle in a convoy.

What does 73 mean in CB lingo? ›

The formal definition of 73 is “Best Regards” – it's a nice way to say goodbye that is unique to amateur radio. But, have you ever stopped to think why we use that number to end a contact?

What does 42 mean on CB? ›

Yes, or OK

What is the most famous secret code? ›

These are some of history's most famous codes.
  • The Caesar shift. Named after Julius Caesar, who used it to encode his military messages, the Caesar shift is as simple as a cipher gets. ...
  • Alberti's disk. ...
  • The Vigenère square. ...
  • The Shugborough inscription. ...
  • The Voynich manuscript. ...
  • Hieroglyphs. ...
  • The Enigma machine. ...
  • Kryptos.
10 Sept 2015

What are the secret codes? ›

The Top 12 Android Secret Security Codes You Need to Know
  • *2767*3855# (Wipe Your Device and Reinstall Firmware) ...
  • *#*#7780#*#* (Run a Factory Reset) ...
  • *#06# (Check the Device's IMEI) ...
  • *#0*# (Activate General Test Mode) ...
  • *#*#232338#*#* (Displays the MAC Address) ...
  • *#*#4986*2650468#*#* (Important Firmware Info)
20 Sept 2022

Why does 10-4 mean ok? ›

10-4 is an affirmative signal: it means “OK.” The ten-codes are credited to Illinois State Police Communications Director Charles Hopper who created them between 1937–40 for use in radio communications among cops. Ten-Four Day ~ for decades, Oct 4 has been a day to salute radio operators.

What is a 10-5 in CB talk? ›

10-5: Relay message (Pass it on). 10-6: Busy/Hold on a second. 10-9: Repeat message (Come again?). 10-10: Transmission Completed (Thanks for coming to my TedTalk).

What's your 10-4 mean? ›

But unless you're familiar with the history of radio, the origins of 10-4—meaning “Message received” or “OK”—may not seem so obvious. As reports, 10-4 is part of a collection of “ten-codes” developed by Illinois State Police communications director Charles Hopper in the late 1930s.


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