Poisoning by otorhino drugs and prep, assault, sequela

This code signifies a long-term health condition or complication resulting from an intentional act of poisoning with drugs specifically used for ear, nose, and throat (ENT) conditions. The original poisoning was inflicted by another person with intent to harm. The sequela could manifest as chronic hearing loss, persistent vertigo, or other lasting damage to the auditory or vestibular systems, or other ENT structures.

Use this code when documenting a current health problem that is a direct and lasting consequence of a past assault involving otorhinolaryngological drugs. This applies when the patient is presenting for treatment of the chronic effect, not the acute poisoning event. Examples include a patient seeking management for permanent tinnitus or balance issues years after being intentionally poisoned with an ototoxic ENT medication.

• Always sequence this code after the code(s) for the specific sequela being treated (e.g., H91.0- for ototoxic hearing loss).
• Ensure documentation clearly links the current condition to a past assault involving ENT drugs.
• Do not use this code for acute poisoning events; it is exclusively for sequelae.