Chronic inflam of postmastoidectomy cavity, bilateral ears

This code signifies persistent inflammation within the mastoidectomy cavity affecting both ears, occurring after a surgical removal of mastoid air cells. It indicates a chronic inflammatory process in the surgically altered mastoid bone, often associated with recurrent infection or poor healing.

Apply this code when documentation explicitly states chronic inflammation in a post-mastoidectomy cavity in both the left and right ears. This diagnosis typically follows a history of mastoidectomy and presents with ongoing symptoms such as otorrhea, pain, or hearing loss related to the inflamed cavity.

• Ensure documentation specifies "chronic" inflammation and clearly indicates "bilateral" involvement.
• Distinguish from acute inflammation (H95.01-) or other postprocedural complications of the mastoidectomy.
• Code any underlying infectious agents or associated conditions, such as cholesteatoma, if documented.