Chronic perichondritis of left external ear

This code signifies a persistent inflammatory condition affecting the perichondrium, the connective tissue covering the cartilage of the outer ear, specifically on the left side. It indicates a long-standing or recurring inflammation rather than an acute episode.

Apply this code when documentation specifies chronic inflammation of the left external ear cartilage's perichondrium. This typically arises from trauma, infection, or autoimmune conditions. Supporting documentation should clearly state "chronic perichondritis" and specify the left ear.

• Ensure the documentation explicitly states "chronic" to differentiate from acute perichondritis.
• Verify laterality; this code is specific to the left ear.
• Consider additional codes for underlying causes (e.g., infection, trauma) if documented.