Police Officer 10 Codes – Law Enforcement Radio 10 Codes

Important Message About Police Radio Terminology

It is important to remember that every law enforcement agency may use different 10 codes; they may be completely different from the ones listed on this web page. However, a great deal of agencies probably use some or even all of the codes listed below.

Police Officer Ten Codes: Why Was It Developed For Law Enforcement Officers?

Ten-codes, or 10-codes, are codes used in two-way voice radio police officer radio ten codes - state by state 10 codescommunication 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), to allow for brevity and standardization of message traffic.

Law Enforcement Terminology

There is no universal or 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 part of a 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.

Below is a list of commonly used 10 codes by police departments across the country. As always, make sure to double check the list below with the department you are applying to as it may be different.

  • 10-0 Caution
  • 10-1 Unable to copy — change location
  • 10-2 Signal good
  • 10-3 Stop transmitting
  • 10-4 Acknowledgement (OK)
  • 10-5 Relay
  • 10-6 Busy — stand by unless urgent
  • 10-7 Out of service
  • 10-8 In service
  • 10-9 Repeat
  • 10-10 Fight in progress
  • 10-11 Dog case
  • 10-12 Stand by (stop)
  • 10-13 Weather — road report
  • 10-14 Prowler report
  • 10-15 Civil disturbance
  • 10-16 Domestic disturbance
  • 10-17 Meet complainant
  • 10-18 Quickly
  • 10-19 Return to …
  • 10-20 Location
  • 10-21 Call … by telephone
  • 10-22 Disregard
  • 10-23 Arrived at scene
  • 10-24 Assignment completed
  • 10-25 Report in person (meet) …
  • 10-26 Detaining subject, expedite
  • 10-27 Drivers license information
  • 10-28 Vehicle registration information
  • 10-29 Check for wanted
  • 10-30 Unnecessary use of radio
  • 10-31 Crime in progress
  • 10-32 Man with gun
  • 10-33 Emergency
  • 10-34 Riot
  • 10-35 Major crime alert
  • 10-36 Correct time
  • 10-37 (Investigate) suspicious vehicle
  • 10-38 Stopping suspicious vehicle
  • 10-39 Urgent — use light, siren
  • 10-40 Silent run — no light, siren
  • 10-41 Beginning tour of duty
  • 10-42 Ending tour of duty
  • 10-43 Information
  • 10-44 Permission to leave … for …
  • 10-45 Animal carcass at …
  • 10-46 Assist motorist
  • 10-47 Emergency road repairs at …
  • 10-48 Traffic standard repair at …
  • 10-49 Traffic light out at …
  • 10-50 Accident (fatal, personal injury, property damage)
  • 10-51 Wrecker needed
  • 10-52 Ambulance needed
  • 10-53 Road blocked at …
  • 10-54 Livestock on highway
  • 10-55 Suspected DUI
  • 10-56 Intoxicated pedestrian
  • 10-57 Hit and run (fatal, personal injury, property damage)
  • 10-58 Direct traffic
  • 10-59 Convoy or escort
  • 10-60 Squad in vicinity
  • 10-61 Isolate self for message
  • 10-62 Reply to message
  • 10-63 Prepare to make written copy
  • 10-64 Message for local delivery
  • 10-65 Net message assignment
  • 10-66 Message cancellation
  • 10-67 Clear for net message
  • 10-68 Dispatch information
  • 10-69 Message received
  • 10-70 Fire
  • 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 En route …
  • 10-77 ETA (estimated time of arrival)
  • 10-78 Need assistance
  • 10-79 Notify coroner
  • 10-80 Chase in progress
  • 10-81 Breathalyzer
  • 10-82 Reserve lodging
  • 10-83 Work school xing at …
  • 10-84 If meeting … advise ETA
  • 10-85 Delayed due to …
  • 10-86 Officer/operator on duty
  • 10-87 Pick up/distribute checks
  • 10-88 Present telephone number of …
  • 10-89 Bomb threat
  • 10-90 Bank alarm at …
  • 10-91 Pick up prisoner/subject
  • 10-92 Improperly parked vehicle
  • 10-93 Blockade
  • 10-94 Drag racing
  • 10-95 Prisoner/subject in custody
  • 10-96 Mental subject
  • 10-97 Check (test) signal
  • 10-98 Prison/jail break
  • 10-99 Wanted/stolen indicated

Los Angeles County California Los Angeles
Cook County Illinois Chicago
Harris County Texas Houston
Maricopa County Arizona Phoenix
San Diego County California San Diego
Orange County California Santa Ana
Kings County New York Brooklyn
Dallas County Texas Dallas
Miami-Dade County Florida Miami
Queens County New York Kew Gardens, Queens
Riverside County California Riverside
San Bernardino County California San Bernardino
Wayne County Michigan Detroit
King County Washington Seattle
Clark County Nevada Las Vegas
Tarrant County Texas Fort Worth
Santa Clara County California San Jose
Broward County Florida Fort Lauderdale
Bexar County Texas San Antonio
New York County New York Manhattan
Philadelphia County Pennsylvania Philadelphia
Suffolk County New York Riverhead
Middlesex County Massachusetts Cambridge and Lowell
Alameda County California Oakland
Sacramento County California Sacramento
Bronx County New York The Bronx
Nassau County New York Mineola
Palm Beach County Florida West Palm Beach
Cuyahoga County Ohio Cleveland
Allegheny County Pennsylvania Pittsburgh
Oakland County Michigan Pontiac
Hillsborough County Florida Tampa
Hennepin County Minnesota Minneapolis
Franklin County Ohio Columbus
Orange County Florida Orlando
Contra Costa County California Martinez
Fairfax County Virginia Fairfax
Salt Lake County Utah Salt Lake City
Fulton County Georgia Atlanta
Travis County Texas Austin
Pima County Arizona Tucson
St. Louis County Missouri Clayton
Montgomery County Maryland Rockville
Milwaukee County Wisconsin Milwaukee
Westchester County New York White Plains
DuPage County Illinois Wheaton
Shelby County Tennessee Memphis
Fresno County California Fresno
Mecklenburg County North Carolina Charlotte
Erie County New York Buffalo
Pinellas County Florida Clearwater
Honolulu County Hawaii Honolulu
Fairfield County Connecticut Bridgeport
Wake County North Carolina Raleigh
Bergen County New Jersey Hackensack
Marion County Indiana Indianapolis
Hartford County Connecticut Hartford
Duval County Florida Jacksonville
Hamilton County Ohio Cincinnati
New Haven County Connecticut New Haven
Prince George’s County Maryland Upper Marlboro
Macomb County Michigan Mount Clemens
San Francisco County California San Francisco
Gwinnett County Georgia Lawrenceville
Kern County California Bakersfield
Worcester County Massachusetts Worcester
Ventura County California Ventura
Pierce County Washington Tacoma
Collin County Texas McKinney
Middlesex County New Jersey New Brunswick
Baltimore County Maryland Towson
Montgomery County Pennsylvania Norristown
Essex County New Jersey Newark
Suffolk County Massachusetts Boston
El Paso County Texas El Paso
DeKalb County Georgia Decatur
Essex County Massachusetts Salem
Hidalgo County Texas Edinburg
Monroe County New York Rochester
Multnomah County Oregon Portland
Jefferson County Kentucky Louisville
San Mateo County California Redwood City
Oklahoma County Oklahoma Oklahoma City
Cobb County Georgia Marietta
Lake County Illinois Waukegan
Jackson County Missouri Independence
Snohomish County Washington Everett
Will County Illinois Joliet
San Joaquin County California Stockton
Norfolk County Massachusetts Dedham
Jefferson County Alabama Birmingham
Denton County Texas Denton
Monmouth County New Jersey Freehold Borough
Bernalillo County New Mexico Albuquerque
Baltimore City Maryland Baltimore
Davidson County Tennessee Nashville
Providence County Rhode Island Providence
Bucks County Pennsylvania Doylestown
Denver County Colorado Denver
Kent County Michigan Grand Rapids
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