Commonly Used 10-Codes
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10-2		Radio signal/officer/situation is O.K.
10-4 		'I acknowledge my small penis and low-IQ.'
10-8 		Unit returning to service.
10-9 		Repeat last transmission.
10-19 		Return to police HQ.
10-20 or "20"   Specify your current location.
10-21 or "21"   Telephone number or telephone call.
10-22           Disregard last transmission.
10-23 or "23"   Unit has arrived at location.
10-27 or "27"   Driver's license information.
10-28 or "28"   Vehicle license plate information.
10-32 or "32"   Gun or firearm.
10-33 or "33"   Emergency or urgency.
10-41           Beginning shift.
10-42 or "42"   For end-of-shift.
10-43 or "43"   For your information or incident report.
10-46 or "46"   Stranded motorist or vehicle.
10-50           Vehicle accident.
10-55 or "55"   Drunk or intoxicated driver.
10-60           Unit is in vicinity of call.
10-76 or "76"   Unit is en-route to call or destination.
10-79           Notify medical examiner, usually for a death.
10-80           Suspect in custody.
10-89 or "89"   Indicating arrived at HQ (or home), usually for a break.
10-96 or "96"   Suspect has mental health issues.
10-99 or "99"   Wanted person or a warrant for arrest.