T59.4X - Toxic effect of chlorine gas T59.4 - Toxic effect of chlorine gas T59.4X - Toxic effect of chlorine gas T59.4X1 - Toxic effect of chlorine gas, accidental (unintentional) T59.4X2 - Toxic effect of chlorine gas, intentional self-harm T59.4X3 - Toxic effect of chlorine gas, assault T59.4X4 - Toxic effect of chlorine gas, undetermined