ICD-10-CM > S00-T88 > T51-T65 > T59 > T59.7 > T59.7X > T59.7X1 T59.7X1 Toxic effect of carbon dioxide, accidental (unintentional) Non-Billable/Non-Specific Applicable To Toxic effect of carbon dioxide NOS Codes T59.7X1A..., initial encounterT59.7X1D..., subsequent encounterT59.7X1S..., sequela