Acute reactive otitis externa, right ear

This code signifies an acute inflammatory response of the external auditory canal, specifically in the right ear, triggered by an identifiable irritant or allergen. It is characterized by rapid onset of symptoms such as pain, itching, and discharge, distinct from infectious causes.

Apply this code when documentation clearly indicates acute inflammation of the right external ear canal due to a non-infectious, reactive process. This typically occurs following exposure to water, chemicals, or foreign bodies, and is supported by a physician's diagnosis of "acute reactive otitis externa, right ear."

• Differentiate from infectious otitis externa (H60.3-) by the absence of bacterial or fungal etiology.
• Ensure laterality is explicitly documented as "right ear" to support this specific code.
• Consider additional codes for any identified irritant or allergen if clinically relevant and documented.