ICD-10-CM > S00-T88 > T51-T65 > T58 > T58.0 > T58.01 T58.01 Toxic effect of carbon monoxide from motor vehicle exhaust, accidental (unintentional) Non-Billable/Non-Specific Codes T58.01XA..., initial encounterT58.01XD..., subsequent encounterT58.01XS..., sequela