Primary blast injury of right ear, initial encounter

This code signifies damage to the right ear resulting directly from the overpressure wave of an explosion. This injury can manifest as tympanic membrane perforation, ossicular chain disruption, or inner ear damage, and is specifically for the initial presentation and treatment of the injury.

Apply this code when documentation clearly states a patient presents with an injury to the right ear directly caused by a blast event, such as from an IED, bomb, or other explosive device. This code is appropriate for the first encounter where the injury is diagnosed and treatment is initiated.

• Ensure documentation specifies "right ear" and "blast injury" as the mechanism.
• Do not use for injuries from secondary blast effects (e.g., flying debris) or tertiary blast effects (e.g., impact with objects).
• Always sequence this code first when it represents the primary reason for the encounter.