ICD-10-CM > S00-T88 > T51-T65 > T58 > T58.0 > T58.04 T58.04 Toxic effect of carbon monoxide from motor vehicle exhaust, undetermined Non-Billable/Non-Specific Codes T58.04XA..., initial encounterT58.04XD..., subsequent encounterT58.04XS..., sequela