ICD-10-CM > S00-T88 > T51-T65 > T57 > T57.3 > T57.3X > T57.3X1 T57.3X1 Toxic effect of hydrogen cyanide, accidental (unintentional) Non-Billable/Non-Specific Applicable To Toxic effect of hydrogen cyanide NOS Codes T57.3X1A..., initial encounterT57.3X1D..., subsequent encounterT57.3X1S..., sequela