What is the most important difference between the ROS and the past history?
a. Any gathered information related to the ROS must be asked before the patient begins the clinical visit, whereas the past history information may be gathered during the clinical visit.
b. Past history identifies any medical condition, illness, injury, or treatment that may be significant to the chief complaint, whereas the ROS is an inventory of the patient's organ systems prior to the E/M service visit.
c. There is no discernible difference between the ROS and the past history.
d. Past history addresses only the events of the patient's health since the most recent E/M service visit.
b) Past history identifies any medical condition, illness, injury, or treatment which may be significant to the chief complaint, while the ROS is an inventory of the patient's organ systems prior to the E/M service visit
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