In medical settings, the term "Code" is informally used by physicians to describe a patient experiencing cardiac arrest, prompting a specialized team, sometimes called a "code team," to quickly gather at the scene and initiate resuscitation efforts. The term originates from hospitals implementing "Code" labels paired with colors (e.g., "Code Blue"), numbers (e.g., "Code 10"), or other descriptors to notify staff of an emergency and clarify its nature. For instance, "Code Pink" is a common signal for a missing infant from the nursery. However, there are no universal standards for these "Code" labels, allowing each facility to customize their usage. While "Code Blue" is widely recognized as indicating a cardiopulmonary arrest in many hospitals, its meaning can vary. Additionally, other emergencies such as bomb threats, terrorist activities, child kidnappings, or mass casualty events may also be assigned "Code" labels.

CPR Certification Labs provides hands-on, American Heart Association–aligned CPR, BLS, ACLS, and PALS certification training to help providers master these life-saving skills.