ICD-10-CM > S00-T88 > T51-T65 > T59 > T59.4 > T59.4X T59.4X Toxic effect of chlorine gas Non-Billable/Non-Specific Codes T59.4X1Toxic effect of chlorine gas, accidental (unintentional)T59.4X1A..., initial encounterT59.4X1D..., subsequent encounterT59.4X1S..., sequelaT59.4X2Toxic effect of chlorine gas, intentional self-harmT59.4X2A..., initial encounterT59.4X2D..., subsequent encounterT59.4X2S..., sequelaT59.4X3Toxic effect of chlorine gas, assaultT59.4X3A..., initial encounterT59.4X3D..., subsequent encounterT59.4X3S..., sequelaT59.4X4Toxic effect of chlorine gas, undeterminedT59.4X4A..., initial encounterT59.4X4D..., subsequent encounterT59.4X4S..., sequela