ICD-10-CM > S00-T88 > T51-T65 > T57 > T57.3 > T57.3X > T57.3X1 > T57.3X1A T57.3X1A Toxic effect of hydrogen cyanide, accidental (unintentional), initial encounter Billable/Specific Copy Code Copy Description Applicable To Toxic effect of hydrogen cyanide NOS