preferred_name: Current or prior left ventricular ejection fraction (lvef) <=40% or documentation of moderately or severely depressed left ventricular systolic function
preferred_name_lc: current or prior left ventricular ejection fraction (lvef) <=40% or documentation of moderately or severely depressed left ventricular systolic function
label: Lvef <=40% or dep lv sys fcn
label_lc: lvef <=40% or dep lv sys fcn