Adverse effect of otorhino drugs and preparations, subs

This code signifies a harmful or unintended reaction to medications specifically used for ear, nose, or throat conditions, occurring during a follow-up visit. It indicates that the patient is experiencing an adverse effect from a drug administered for an ENT issue, and this encounter is not the initial treatment for that adverse effect.

Apply this code when a patient presents for ongoing management or evaluation of an adverse drug reaction to an otorhinolaryngological medication, such as ear drops, nasal sprays, or oral medications for ENT issues, after the initial treatment for the adverse effect has already begun. Examples include follow-up for persistent dizziness from an otic antibiotic or continued rash from a nasal steroid.

• Always sequence this code after the code for the specific manifestation of the adverse effect.
• Ensure the documentation clearly states the drug involved and that the encounter is for follow-up care of the adverse effect.
• Distinguish from poisoning (T36-T65) or underdosing, as this code is specifically for adverse effects at therapeutic doses.