Type and identity of unit providing transport to the first medical facility receiving the patient.
Subfield 1: Source of Transport to First Medical Facility
Subfield 2: EMS Response Agency Identifier
Subfield 3: EMS Response Run Number
Subfield 4: Name or Number of Medical Facility Receiving Patient
Important to trace victim from the scene of crash through the health care system. Facilitates linkage of injured crash victims with Emergency Medical Services data files.