ever means at any time (from birth until the present moment). It has no implications regarding the listed conditions, so the idea is whether the person has been seen, treated, hospitalized, or had surgery for the listed conditions at any time since birth. It doesn't ask, for example, if the person has been seen, treated, hospitalized, or had surgery for appendicitis or for an amputation or for cosmetic reasons or to reattach a detached retina, to name just a few possibilities.
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