"Emergency" includes all services that may be used by a person if he or she is in a medical crisis situation. These situations may be very serious and require immediate intervention by an ambulatory service that can quickly escort the patient to the emergency room of a hospital. For situations that are not life-threatening, Immediate and Urgent Care clinics provide prompt diagnosis and treatment for minor emergencies or medical illnesses. At these facilities, a physician is on call during a clinic's business hours to treat you and determine if your condition will need more attention.