These are the 10 Codes which can be used anywhere in-game. They resemble the police codes used by law enforcement agencies in the U.S. but are adapted to bring more imersion to your CnR:NG experience.
A printable PDF version can be downloaded here.
10-0: Use Caution
10-1: Signal Weak
10-2: Signal Good
10-3: Stop Transmitting
10-4: Okay, Affirmative
10-5: Relay To
10-6: Busy Unless Urgent
10-7: Murder
10-8: In Service in a $veh at $loc
10-9: Say Again, Repeat
10-10: Negative, No
10-11: On Duty
10-12: Stand By
10-13: Follow Me
10-14: Message/Information
10-15: Message Delivered
10-16: Reply To Message
10-17: Robbery
10-18: Urgent
10-19: In Contact
10-20: Location: $loc
10-21: Assault
10-22: Disregard, Nevermind
10-23: Arrived at Location: $loc
10-24: Sexual Assault
10-25: Meet With Person
10-26: ETA
10-27: Drivers License Check
10-28: Weapon Activity
10-29: I Need a Medic $loc
10-30: Danger/Caution
10-31: Pick Up Person
10-32: # Units Needed
10-33: Requesting Help Immediately at $loc
10-34: Vehicle Theft
10-35: Roadblock set up at $loc
10-36: Security Check
10-37: Drunk Driving
10-38: Having Computer Problems…
10-39: Use lights/sirens... (Urgent)
10-40: No lights/sirens... (Silent)
10-41: Beginning Tour of Duty at $time
10-42: Ending Tour of Duty at $time
10-43: Requesting Harbor Patrol at $loc
10-44: Permission to Leave
10-45: Human Remains at $loc
10-46: Assist Motorist
10-47: Kidnapping
10-48: Subject Disturbing the Peace
10-49: Abandoned Vehicle
10-50: Traffic Collision
10-51: Suspect on Foot
10-52: Ambulance Needed at $loc
10-53: Dispatch
10-54: Change to Channel
10-55: Intoxicated Driver
10-56: Intoxicated Pedestrian
10-57: Hit and Run
10-58: Air Plane Crash
10-59: Unlawful Driver
10-60: Suspected Hacking
10-61: I'm a noob!
10-62: Attempting PIT
10-63: Going to Hospital
10-64: Going to a Restaurant
10-65: Going to Ammunation
10-66: Major Crime Alert
10-67: PM me
10-68: GiveCash To
10-69: Sexual Misconduct
10-70: Lost Visual with Suspect $loc
10-71: Drug Activity
10-72: Aborting Pursuit at $loc
10-73: Missing Person
10-74: Civil Disturbance
10-75: Domestic Problem
10-76: Bribe
10-77: Return to
10-78: Backup Needed at $loc
10-79: Notify Coroner
10-80: In Pursuit with $sus $loc - heading $dir
10-81: Illegal Fishing/Hunting
10-82: Car Occupied Multiple Times
10-83: Suspect Hidden on Radar $loc
10-84: Multiple Suspect in the area of $loc
10-85: Suspect Down/Custody $loc
10-86: Crime in Progress at $loc
10-87: Illegal Drug Activity
10-88: Suspect has a Gun $loc
10-89: Bomb Threat
10-90: I Need a New Vehicle
10-91: Carrying Illegal Items
10-92: Theft
10-93: Misuse of Communicator
10-94: Me
10-95: At Police Station
10-96: Mental Subject/Problems
10-97: Test Communicator
10-98: Prison Break by $esc
10-99: Officer down/Officer needs help!
10-100: Taking 5 Minutes Break
10-101: LOL!
10-102: My Game Crashed
10-103: Noob Cop/Cops!!
10-104: Crooked Cop Aiding Suspect
10-105: On Patrol at $loc
10-106: Escort
10-107: Land
10-108: Air
10-109: Water
10-110: Innocent
10-111: Yellow, seems cooperative
10-112: Yellow, uncooperative
10-113: Orange, Warrant Issued
10-114: Most Wanted
10-115: Backup Needed, 1 unit $loc
10-116: BackupNeeded, Multiple Units $loc
10-117: Do I have backup coming to $loc?
10-118: Suspect Fleeing into Country Side at $loc
10-119: Pursuit Halted/Stand Still $loc
10-120: Good Job!
10-121: Getting a New Vehicle
10-122: Escort
10-123: Ticket Issued to $sus
10-124: $sus Paid their Ticket
10-125: Joining Pursuit $loc $dir
10-126: Returning to Patrol Zone
10-127: Vehicle Lightly Damaged
10-128: Vehicle Heavily Damaged
10-129: Flat Tire
10-130: Robbery/Hold Up
10-131: Casino Robbery
10-132: Bank Robbery by $bkr
10-133: Hit Contract
10-134: Returning to City Limits from $loc
10-135: Roadblock
10-136: Intercepting Suspect from $loc Going $dir
10-137: Shoot the Suspect's Tire
10-138: Suspect in a Vehicle
10-139: Suspect has a Weapon
10-140: Deathmatching
10-141: Friendly Fire
10-142: Which way are you heading?
10-143: Requesting Pickup $loc
10-144: Requesting Fast Pursuit Unit $loc
10-145: Requesting Air Support $loc
10-146: Requesting Boat Support $loc
10-147: Dispatch, Requesting Assignment
10-148: Fog-Air Support out of service.
10-149: Air Support moving in to shoot, backoff! $loc
10-150: I'm out of Ammo
10-151: Out of Service at $loc
10-152: Going to Location
10-153: $dir Bound
10-154: Assignment Complete
10-155: Registration Check
10-156: Requesting Roadblock Immediately at $loc
10-157: Gang Activity
10-158: Investigate Vehicle
10-159: Suspect has gotten away $loc
10-160: In Hot Pursuit! $loc $dir Bound
10-161: Burglary
10-999: CnR:NG Admin(s)