Poisoning by otorhino drugs and prep, self-harm, sequela

This code signifies the long-term effects or complications arising from an intentional overdose or self-poisoning with medications primarily used for ear, nose, and throat conditions. These sequelae can manifest as chronic hearing loss, tinnitus, vestibular dysfunction, or other persistent issues resulting from the initial toxic event.

Apply this code when documenting a patient presenting with a chronic condition or permanent injury directly attributable to a past intentional self-harm event involving otorhinolaryngological drugs. This would include follow-up visits for ongoing management of conditions like drug-induced sensorineural hearing loss or persistent vertigo that developed after such an incident.

• Always sequence this sequela code after the code for the specific chronic condition or injury (e.g., H90.3 for sensorineural hearing loss).
• Ensure documentation clearly links the current condition to a past intentional self-harm event involving the specified drug class.
• Do not use this code for acute poisoning events; it is exclusively for the long-term consequences.