A "code yellow" is a hospital emergency alert that indicates a situation requiring heightened awareness and response, often related to a missing patient or a potential security threat. It prompts staff to be vigilant and prepared to assist in locating the individual or managing the situation effectively. During a code yellow, hospital personnel may follow specific protocols to ensure safety and communication. This can involve searching the facility, monitoring exits, and coordinating with security teams. The goal is to resolve the situation quickly while maintaining a safe environment for all patients and staff.