Has the patient had any significant medical procedures:Hx:Pt:^Patient:Nom:NEMSIS
has the patient had any significant medical procedures:hx:pt:^patient:nom:nemsis
Has the patient had any significant medical procedures:History:To identify measures at a point in time:^Patient:Nominal:NEMSIS
has the patient had any significant medical procedures:history:to identify measures at a point in time:^patient:nominal:nemsis