ICD-10-CM > S00-T88 > T36-T50 > T49 > T49.6 > T49.6X > T49.6X4 T49.6X4 Poisoning by otorhinolaryngological drugs and preparations, undetermined Non-Billable/Non-Specific Codes T49.6X4A..., initial encounterT49.6X4D..., subsequent encounterT49.6X4S..., sequela