Acute perichondritis of external ear, bilateral

This code signifies an acute inflammatory condition affecting the perichondrium, the connective tissue covering the cartilage of both external ears. It typically presents with pain, redness, swelling, and tenderness of the auricle, often sparing the earlobe. This inflammation can arise from trauma, infection, or systemic conditions.

Apply this code when documentation clearly indicates an acute perichondritis affecting both external ears. This diagnosis is supported by physician notes detailing bilateral ear pain, erythema, and swelling, often following an injury, piercing, or infection.

• Ensure documentation specifies "acute" and "bilateral" to support this specific code.
• Differentiate from cellulitis (L03.11-) or otitis externa (H60.-), which involve different tissue layers.
• Code any underlying cause, such as infection or trauma, as an additional diagnosis.