ICD-10-CM > S00-T88 > T51-T65 > T65 > T65.8 > T65.89 > T65.891 T65.891 Toxic effect of other specified substances, accidental (unintentional) Non-Billable/Non-Specific Applicable To Toxic effect of other specified substances NOS Codes T65.891A..., initial encounterT65.891D..., subsequent encounterT65.891S..., sequela