ICD-10-CM > S00-T88 > T36-T50 > T49 > T49.9 > T49.91 T49.91 Poisoning by unspecified topical agent, accidental (unintentional) Non-Billable/Non-Specific Codes T49.91XA..., initial encounterT49.91XD..., subsequent encounterT49.91XS..., sequela