ICD-10-CM > S00-T88 > T51-T65 > T59 > T59.4 > T59.4X > T59.4X3 T59.4X3 Toxic effect of chlorine gas, assault Non-Billable/Non-Specific Codes T59.4X3A..., initial encounterT59.4X3D..., subsequent encounterT59.4X3S..., sequela