"Ten Codes," also known as "10 Codes," are brevity codes used in voice communication, primarily by law enforcement and emergency services. These codes help convey information quickly and clearly, reducing the chance of miscommunication. Each code begins with the number ten, followed by a specific number that represents a particular message or situation. For example, 10-4 means "Acknowledgment" or "Message received," while 10-20 refers to "Location." The use of these codes can vary by region and agency, but they serve as a standardized way to communicate essential information efficiently in high-pressure situations.