Underdosing of otorhino drugs and preparations, subs

This code signifies a patient's adverse reaction or complication arising from receiving an insufficient amount of medication specifically intended for ear, nose, or throat conditions. This underdosing has occurred during a follow-up visit or during the recovery phase of the initial problem.

Apply this code when a patient presents for ongoing care related to an underdosing event involving an ENT-specific drug, such as inadequate steroid dosage for severe sinusitis or insufficient antibiotic for otitis media, leading to persistent or worsening symptoms. This indicates that the underdosing was identified and is being addressed in a subsequent encounter.

• Always use in conjunction with a code identifying the specific adverse effect or medical condition resulting from the underdosing.
• Ensure documentation clearly indicates the underdosing occurred and that this is not the initial encounter for the underdosing event.
• Distinguish from initial encounters (A), subsequent encounters (D), and sequela (S) based on the patient's current phase of care for the underdosing.