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By Megan Wells, Police1 Contributor
Police 10 codes are a common form of communication for LEOs. And while some departments are beginning to favor plain English over 10 codes, it’s still an important language to learn. Here is a fully comprehensive list of the Association of Public-Safety Communications Officials (APCO) 10 codes.
Note: 10 codes can vary greatly from department to department.
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| Code | Meaning |
|---|---|
| 10-0 | Use Caution |
| 10-1 | Signal Weak |
| 10-2 | Signal Good |
| 10-3 | Stop Transmitting |
| 10-4 | Affirmative |
| 10-5 | Relay To/From |
| 10-6 | Busy |
| 10-7 | Out of Service |
| 10-8 | In Service |
| 10-9 | Say Again |
| 10-10 | Negative |
| 10-11 | _On Duty (Employee #) |
| 10-12 | Stand By (Stop) |
| 10-13 | Weather Conditions |
| 10-14 | Message/Information |
| 10-15 | Message Delivered |
| 10-16 | Reply to Message |
| 10-17 | En-route |
| 10-18 | Urgent |
| 10-19 | (In) Contact |
| 10-20 | Location |
| 10-21 | Call (__) by Phone |
| 10-22 | Disregard |
| 10-23 | Arrived at Scene |
| 10-24 | Assignment Completed |
| 10-25 | Report to (Meet) |
| 10-26 | Estimated Arrival Time |
| 10-27 | License/Permit Information |
| 10-28 | Vehicle Information |
| 10-29 | Records Check |
| 10-30 | Danger/Caution |
| 10-31 | Pick Up |
| 10-32 | __ Units Needed (Specify) |
| 10-33 | Need Immediate Assistance |
| 10-34 | Current Time |
| 10-40 | Fight in Progress |
| 10-41 | Beginning Tour of Duty |
| 10-42 | Ending Tour of Duty |
| 10-43 | In Pursuit |
| 10-44 | Riot |
| 10-45 | Bomb Threat |
| 10-45 | Bank Alarm |
| 10-47 | Complete Assignment Quickly |
| 10-48 | Detaining Suspect, Expedite |
| 10-49 | Drag Racing |
| 10-50 | Vehicle Accident |
| 10-51 | Dispatch Wrecker |
| 10-52 | Dispatch Ambulance |
| 10-53 | Road Blocked |
| 10-54 | Hit and Run Accident |
| 10-55 | Intoxicated Driver |
| 10-56 | Intoxicated Pedestrian |
| 10-57 | Request BT Operator |
| 10-58 | Direct Traffic |
| 10-59 | Escort |
| 10-60 | Suspicious Vehicle |
| 10-61 | Stopping Suspicious Vehicle |
| 10-62 | B and E in Progress |
| 10-63 | Prepare to Receive Assignment |
| 10-64 | Crime in Progress |
| 10-65 | Armed Robbery |
| 10-66 | Notify Medical Examiner |
| 10-67 | Report of Death |
| 10-68 | Livestock in Roadway |
| 10-69 | Advise Telephone Number |
| 10-70 | Improper Parked Vehicle |
| 10-71 | Improper Use of Radio |
| 10-72 | Prisoner in Custody |
| 10-73 | Mental Subject |
| 10-74 | Prison/Jail Break |
| 10-75 | Wanted or Stolen |
| 10-76 | Prowler |
| 10-77 | Direct Traffic at Fire Scene |
| 10-80 | Fire Alarm |
| 10-81 | Nature of Fire |
| 10-82 | Fire in Progress |
| 10-83 | Smoke Visible |
| 10-84 | No Smoke Visible |
| 10-85 | Respond Without Blue Lights/Siren |
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This article, originally published on September 26, 2016, has been updated.