ICD-10-CM > S00-T88 > T51-T65 > T59 > T59.1 > T59.1X > T59.1X4 T59.1X4 Toxic effect of sulfur dioxide, undetermined Non-Billable/Non-Specific Codes T59.1X4A..., initial encounterT59.1X4D..., subsequent encounterT59.1X4S..., sequela