Police and other agencies use 10 codes to verbally communicate efficiently. The word ten (10) indicates the next number, or numbers, is code.
| 10-1 | Poor Radio Reception |
| 10-2 | Good Radio Reception |
| 10-3 | Stop Transmission |
| 10-4 | Message Received |
| 10-5 | Relay Message |
| 10-6 | Change Radio Channel |
| 10-7 | Out of Service |
| 10-8 | In Service |
| 10-9 | Repeat Message |
| 10-10 | Off Duty |
| 10-11 | Visitors Can Hear Radio |
| 10-12 | Advise Weather / Road Conditions |
| 10-13 | |
| 10-14 | |
| 10-15 | Have Prisoner in Custody |
| 10-16 | Pick Up |
| 10-17 | Getting Fuel |
| 10-18 | |
| 10-19 | Return or Go to ___ |
| 10-20 | Location |
| 10-21 | Telephone |
| 10-22 | Cancel or Disregard |
| 10-23 | Stand By |
| 10-24 | |
| 10-25 | Do You Have Contact With ___? |
| 10-26 | Clear of Warrants |
| 10-27 | Subject Wanted |
| 10-28 | Registration Check |
| 10-29 | Check for Warrants |
| 10-30 | |
| 10-31 | |
| 10-32 | |
| 10-33 | Alarm is Sounding |
| 10-34 | |
| 10-35 | Time Check |
| 10-36 | Correct Time |
| 10-37 | Please Identify Your Unit |
| 10-38 | |
| 10-39 | Can ___ Come to Radio ? |
| 10-40 | Is ___ Available for Phone Call ? |
| 10-41 | |
| 10-42 | |
| 10-43 | |
| 10-44 | |
| 10-45 | Subject Condition: A to D |
| 10-46 | |
| 10-47 | |
| 10-48 | |
| 10-49 | Proceeding to ___ |
| 10-50 | Drugged |
| 10-51 | Drunk |
| 10-52 | Ambulance Needed |
| 10-53 | Person Down |
| 10-54 | Possible Body |
| 10-55 | Coroner's Case |
| 10-56 | Suicide, (a) - Attempted |
| 10-57 | |
| 10-58 | |
| 10-59 | Security Check |
| 10-60 | |
| 10-61 | Bike Theft |
| 10-62 | |
| 10-63 | Prepare to Copy |
| 10-64 | |
| 10-65 | |
| 10-66 | Suspicious Person |
| 10-67 | Person Calling for Help |
| 10-68 | |
| 10-69 | |
| 10-70 | Prowler |
| 10-71 | Shots Fired |
| 10-72 | |
| 10-73 | How Do You Copy ? |
| 10-74 | |
| 10-75 | |
| 10-76 | |
| 10-77 | |
| 10-78 | |
| 10-79 | |
| 10-80 | Explosion |
| 10-81 | |
| 10-82 | |
| 10-83 | |
| 10-84 | |
| 10-85 | |
| 10-86 | Any Traffic for Me ? |
| 10-87 | |
| 10-88 | Provide Cover for Units |
| 10-89 | |
| 10-90 | |
| 10-91 | Hazard |
| 10-92 | |
| 10-93 | |
| 10-94 | |
| 10-95 | |
| 10-96 | |
| 10-97 | Arrived at Scene |
| 10-98 | Completed Assignment |