Police, Medical, Fire, CB call codes.
Radio Incident 10-Codes and "Jargon"

See Also:
Ten-code at wikipedia for more detailed list.
Massachusetts Notification Network: The Codes

The Ten-code system developed in 1937 and expanded in 1974 has continued to evolve and many of the codes have different meanings to different agencies.
The Association of Public-Safety Communications Officials-International (APCO), is now recommending that plain speech communications is preferred.

The proliferation of different meanings may render them useless in situations where people from different agencies and jurisdictions need to communicate. For that reason their use is expressly forbidden in the Incident Command System as is the use of other codes

Ten Codes:
Police and CB
10-00 (Police) Officer Down, All Patrols Respond
10-0 (Police) Death, or Pursuit
10-1 = Receiving poorly 
10-2 = Receiving well
10-3 = Stop transmitting 
10-4 = Message received 
10-5 = Relay message to _____
10-6 = Busy, please stand by
10-7 = Out of service, leaving the air
10-8 = In service, subject to call 
10-9 = Repeat message
10-10 = Transmission completed, standing by
10-10 (Police) Off duty
10-11 = Talking too rapidly
10-11 (Police) Identify this frequency
10-12 =  Visitors are present (be discrete).
10-13 = Advise Weather/Road conditions
10-14 Citizen holding suspect.
10-20 "What's your location?" 
 Commonly asked as "What's your 20?" 

Police only
See next column for CB codes 
10-15 Prisoner in custody. 
10-16 Pick up prisoner. 
10-17 Request for gasoline. 
10-18 Equipment exchange. 
10-19 Return/returning to the station. 
10-20 Location? 
10-21 Telephone:______ 
10-21a Advise home that I will return at ______. 
10-21b Phone your home 
10-21r Phone radio dispatch 
10-22 Disregard the last assignment. 
10-22c Leave area if all secure. 
10-23 Standby. 
10-24 Request car-to-car transmission. 
10-25 Do you have contact with _______? 
10-26 Clear. 
10-27 Driver's license check. 
10-28 Vehicle registration request. 
10-29 Check wants/warrants.[vehicle] (PIN,SVS) 
10-29a Check wants/warrants [subject] (PIN) 
10-29c Check complete [subject] 
10-29f The subject is wanted for a felony. 
10-29h Caution - severe hazard potential. 
10-29r Check wants/record [subject PIN,CJIC) 
10-29m The subject is wanted for a misdemeanor. 
10-29v The vehicle wanted in connection W/crime. 
10-30 Does not conform to regulations. 
10-32 Drowning. 
10-33 Alarm sounding. 
10-34 Assist at office. 
10-35 Time check. 
10-36 Confidential information. 
10-37 Identify the operator. 
10-39 Can ______ come to the radio? 
10-40 Is ______ available for a telephone call? 
10-42 Check on the welfare of/at ______. 
10-43 Call a doctor. 
10-45 What is the condition of the patient? 
10-45A Condition of patient is good. 
10-45B Condition of patient is serious. 
10-45C Condition of patient is critical. 
10-45D Patient is deceased. 
10-46 Sick person [ambulance enroute] 
10-48 Ambulance transfer call 
10-49 Proceed to/Enroute to ______. 
10-50 under influence of narcotics/Take a report.
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. 
10-56A Suicide attempt. 
10-57 Firearm discharged. 
10-58 Garbage complaint 
10-59 Security check./Malicious mischief 
10-60 Lock out. 
10-61 Miscellaneous public service. 
10-62 Meet a citizen. 
10-62A Take a report from a citizen. 
10-62B Civil standby. 
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. 
10-86 Any traffic? 
10-87 Meet the officer at ______. 
10-88 Fill with the officer/Assume your post. 
10-91 Animal. 
10-91a Stray. 
10-91b Noisy animal. 
10-91c Injured animal. 
10-91d Dead animal. 
10-91e Animal bite. 
10-91g Animal pickup. 
10-91h Stray horse 
10-91j Pickup/collect ______. 
10-91L Leash law violation. 
10-91V Vicious animal. 
10-95 pedestrian/ Requesting an I.D./Techunit. 
10-96 Out of vehicle-ped. send backup 
10-97 Arrived at the scene. 
10-98 Available for assignment. 
10-99 Open police garage door.
10-100 Civil disturbance - Mutual aid standby. 
10-101 Civil disturbance - Mutual aid request.

11-00 Codes 
11-10 Take a report. 
11-24 Abandoned automobile. 
11-25 Traffic hazard. 
11-26 Abandoned bicycle. 
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. 
11-48 Furnish transportation. 
11-51 Escort. 
11-52 Funeral detail. 
11-54 Suspicious vehicle. 
11-55 Officer is being followed by automobile. 
11-56 Officer is 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 Defective traffic light. 
11-71 Fire.
11-78 Aircraft accident. 
11-79 Accident - ambulance dispatched. 
11-80 Accident - major injuries. 
11-81 Accident - minor injuries. 
11-82 Accident - no injuries. 
11-83 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: _______ 
11-99 Officer needs help. 


900 Series Codes 
904 Fire. 
904A Automobile fire. 
904B Building fire. 
904G Grass fire. 
909 Traffic problem; police needed. 
910 Can handle this detail. 
925 Suspicious vehicle.
932 Turn on _______ mobile relay at _______. 
933 Turn off mobile relay. 
949 Burning inspection at _______. 
950 Control burn in progress/about to begin/ended. 
951 Need fire investigator. 
952 Report on conditions. 
953 Investigate smoke. 
953A Investigate gas. 
954 Off the air at the scene of the fire. 
955 Fire is under control. 
956 Assignment not finished. 
957 Delayed response of __ minutes. 
980 Restrict calls to emergency only. 
981 Resume normal traffic. 
1000 Plane crash 
3000 Road block

Other Codes 
Code 1 Do so at your convenience. 
Code 2 Urgent. 
Code 3 Emergency/lights and siren. 
Code 4 No further assistance is needed. 
Code 5 Stakeout. 
Code 6 Responding from a long distance. 
Code 7 Mealtime. 
Code 8 Request cover/backup. 
Code 9 Set up a roadblock. 
Code 10 Bomb threat 
Code 12 Notify news media 
Code 20 Officer needs assistance 
Code 22 Restricted radio traffic 
Code 30 Officer needs HELP - EMERGENCY! 
Code 33 Mobile emergency - clear this radio channel. 
Code 43 TAC forces committed. 
AID Public Safety Assistance 

Medical / Fire Status Codes...

Code 10 Critical Trauma case
Code 20 Acute Trauma case
Code 30 Trauma case
Code 40 Serious case (IV started)
Code 50 Basic transport (not serious)
Code N Newsworthy event 

Professional Codes
Code Adam - Missing Child
Doctor Brown - Hospital danger from violent
               non-staff member
Time Check - Can be a code in stores for
              a bomb alert.
              
MRS - Municipal Radio Service or
Metro Radio System Codes
(Central Massachusetts)

10-1  Responding
10-2  Cancel Response
10-3  Arrived on Scene
10-4  Acknowledgement
10-5  Repeat
10-6  Stand By
10-7  Verify address or info.
10-8  Call
10-9  Meet
10-10 Your location?
10-11 Radio Test (R1 to R9)
10-12 Preliminary Report
10-13 Need Help
      Code 1-Urgent
      Code 2-Not Urgent
10-14 Disregard previous info.
10-15 False Call/No Incident
10-16 Freq. Request (fire only)
10-17 Fire Box # Request
10-18 Activity Update
10-19 Monitor Freq. for activity
10-20 Incident Under Control
10-21 Brush/Woods Fire
10-22 Motor Vehicle Fire
10-23 HazMat Incident
      Code 1-State Team Requested
      Code 2-Local FD Response Only
10-24 Gas Leak
10-25 Electrical Fire
      Code 1-Manhole
      Code 2-Vault
      Code 3-Substation
10-26 Ship Fire
10-27 Subway/RR Incident
10-28 Tunnel Incident
10-29 Incident is Photo-worthy
10-30 Fire/Smoke Showing
      Code 1-Heavy Smoke/Fire
      Code 2-Light Smoke/Fire
      Code 3-Nothing Showing
10-31 Explosion/Bomb Incident
      Code 1-Explosion
      Code 2-Bomb Incident
      Code 3-Susp. Package/Device
10-32 High Rise Incident
10-33 Structural Collapse
10-34 Construction/Industrial Accident
10-35 Working Fire
10-36 Search For Person
      Code 1-Missing
      Code 2-Lost
10-37 Water Incident
10-38 Drowning Search
      Code 1-Confirmed Victim
10-39 Aircraft Incident
      Code 1-Serious
      Code 2-Not Serious
10-40 Motor Vehicle Accident
      Code 1-Jaws Requested
      Code 2-Photo/Recon Requested
      Code 3-Accident Not Reportable
10-41 Emergency Vehicle MVA
10-42 School Bus Accident
10-43 MedFlight Requested
      Code 1-Requested
      Code 2-LZ (Landing Zone) Location
      Code 3-Inter-facility Transfer
      Code 4-Not Avail. Due to Wx (Weather)
      Code 5-Cancelled by OIC
10-44 Tractor Trailer Accident
10-45 Fatality/Injuries
      Code 1-Fatality
      Code 2-Serious Injury
      Code 3-Minor Injury
10-46 Weather Alert
10-47 Avoid Area/congestion
      Code 1-Flooding
      Code 2-Wind Damage
      Code 3-Accident
10-48 Report/Road Weather
10-49 Wrong-way Traffic
10-50 Police Operation
      Code 1-Pursuit/Auto
      Code 2-Manhunt/Search on foot
      Code 3-Raid
      Code 4-Other (specify)
10-51 Suicide
      Code 1-Jumper
      Code 2-Other (specify)
10-52 Demonstration
      Code 1-Riot
      Code 2-Civil Disturbance
      Code 3-Volatile Situation
      Code 4-Peaceful
      
 Lists at  Boston Fire Buffs and   Massnet   

CB
10-16 = Make pick up at _____
10-17 = Urgent business 
10-18 = Anything for us?
10-19 = Nothing for you, return to base
10-20 = My location is _____
10-21 = Call by telephone
10-22 = Report in person to
10-23 = Stand by
10-24 = Completed last assignment
10-25 = Can you contact _____
10-26 = Disregard last information
10-27 = I am moving to channel _____
10-28 = Identify your station
10-29 = Time is up for contact
10-30 = Does not conform to FCC rules
10-32 = I will give you a radio check
10-33 = Emergency Traffic
10-34 = Trouble at this station
10-35 = Confidential information
10-36 = Correct time is
10-37 = Wrecker needed at
10-38 = Ambulance needed at
10-39 = Your message delivered
10-41 = Please turn to channel
10-42 = Traffic accident at
10-43 = Traffic tie up at
10-44 = I have a message for you
10-45 = All units within range please report
10-50 = Break channel
10-60 = What is next message number?
10-62 = Unable to copy, use phone
10-63 = Net directed to
10-64 = Net clear
10-65 = Awaiting your next message/assignment
10-67 = All units comply
10-70 = Fire at _____
10-71 = Proceed with transmission in sequence
10-77 = Negative contact
10-81 = Reserve hotel room for ______
10-82 = Reserve room for _____
10-84 = My telephone number is ______
10-85 = My address is _____
10-91 = Talk closer to the microphone
10-93 = Check my frequency on this channel
10-94 = Please give me a long count (1-10)
10-99 = Mission completed, all units secure
10-200 = Police needed at _____ 

Links:
Emergency Services Glossary
California Highway Patrol Abbreviations
Massachusetts Notification Network: The Codes