▁produce ▁S NO ME D ▁CT . ▁ ▁Vers ions ▁of ▁S NO ME D ▁released ▁prior ▁to ▁ 2 0 0 1 ▁were ▁based ▁on ▁a ▁mult ia x ial , ▁hier arch ical ▁classification ▁system . ▁As ▁in ▁any ▁such ▁system , ▁a ▁disease ▁may ▁be ▁located ▁in ▁a ▁body ▁organ ▁( an atom y ), ▁which ▁results ▁in ▁a ▁code ▁in ▁a ▁top ography ▁axis ▁and ▁may ▁lead ▁to ▁morph ological ▁alter ations ▁represented ▁by ▁a ▁morph ology ▁code . ▁ ▁In ▁ 2 0 0 2 ▁the ▁first ▁release ▁of ▁S NO ME D ▁CT ▁adopted ▁a ▁completely ▁different ▁structure . ▁A ▁sub - type ▁hierarchy , ▁supported ▁by ▁defining ▁relationships ▁based ▁on ▁description ▁logic , ▁replaced ▁the ▁axes ▁described ▁in ▁this ▁article . ▁Vers ions ▁of ▁S NO ME D ▁prior ▁to ▁S NO ME D ▁CT ▁are ▁planned ▁to ▁be ▁formally ▁deprecated ▁from ▁ 2 0 1 7 . ▁Therefore , ▁readers ▁interested ▁in ▁current ▁information ▁about ▁S NO ME D ▁are ▁directed ▁to ▁the ▁article ▁on ▁S NO ME D ▁CT . ▁ ▁Pur pose ▁S NO ME D ▁was ▁designed ▁as ▁a ▁compreh ensive ▁nom en cl ature ▁of ▁clin ical ▁medicine ▁for ▁the ▁purpose ▁of ▁accur ately ▁storing ▁and / or ▁retr ieving ▁records ▁of ▁clin ical ▁care ▁in ▁human ▁and ▁veter inary ▁medicine . ▁The ▁met ap hor ▁used ▁by ▁Roger ▁A . ▁C ô té , ▁the ▁first ▁editor ial ▁chair , ▁was ▁that ▁S NO ME D ▁would ▁become ▁the ▁periodic