Chronic inflammation of postmastoidectomy cavity, left ear

This code signifies a persistent inflammatory process occurring within the surgical cavity of the left ear following a mastoidectomy procedure. This inflammation is chronic, indicating a long-standing or recurrent issue rather than an acute infection.

Assign this code when documentation clearly indicates chronic inflammation of the post-surgical mastoid cavity in the left ear. Supporting documentation should include physician notes detailing the chronicity of the inflammation and its specific location.

• Ensure the documentation specifies "chronic" inflammation; acute inflammation would be coded differently.
• Verify the laterality (left ear) is clearly documented.
• Do not confuse with codes for acute mastoiditis or other non-inflammatory post-mastoidectomy complications.