What code would indicate that an officer has encountered a situation requiring immediate action?

The code that signifies an officer has encountered a situation requiring immediate action is 10-99. This code is utilized by law enforcement to alert fellow officers and dispatch that there is an urgent situation that demands immediate attention or response. It effectively communicates the necessity for rapid deployment of resources or backup when an officer is in a critical scenario or facing a serious incident.

Other codes, such as 10-91 (which typically pertains to a traffic related issue), 10-52 (which may refer to a medical situation), and 10-60 (which often signals an ability to assist), do not carry the same immediate urgency or critical nature as 10-99. Therefore, in the context of emergency responses and the need for swift action, 10-99 is the appropriate code to signify that type of situation.