A major insurer's ER denial policy may be completely arbitrary, finds a study in JAMA Network Open. The new research suggests that the criteria used to deny coverage is completely useless at predicting when someone is or isn’t sick enough to need the ER.

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A major insurer's ER denial policy may be completely arbitrary, finds a study in JAMA Network Open. The new research suggests that the criteria used to deny coverage is completely useless at predicting when someone is or isn’t sick enough to need the ER.