Y37.30 - Military operations involving unspecified fire, conflagration and hot substance Y37.3 - Military operations involving fires, conflagrations and hot substances Y37.30 - Military operations involving unspecified fire, conflagration and hot substance Y37.300 - Military operations involving unspecified fire, conflagration and hot substance, military personnel Y37.301 - Military operations involving unspecified fire, conflagration and hot substance, civilian