The known disposition of the patient from the Emergency Department (ED) Indication of how the patient was dispositioned from the hospital, if admitted. The unique number associated with the law enforcement or crash report which can be used for linkage at a later date. The unique number associated with the local or state trauma registry which can be used for linkage at a later date. The unique number associated with the fire incident report which can be used for linkage at a later date. The unique number associated with a patient ID band agency. This is used by a few states as a universal linkage between healthcare data agency’s.