Chronic lacrimal mucocele of bilateral lacrimal passages

This code signifies a long-standing, non-infectious obstruction of the tear drainage system in both eyes, leading to a distended lacrimal sac filled with mucus. It represents a chronic, often palpable, swelling in the medial canthal region due to impaired tear outflow.

Use this code when documentation clearly indicates a chronic mucocele affecting both lacrimal passages. This diagnosis is typically supported by clinical examination findings of a persistent, non-tender mass over the lacrimal sac area bilaterally, often with a history of epiphora.

• Ensure documentation specifies "chronic" and "bilateral" to accurately assign this code.
• Differentiate from acute dacryocystitis (H04.3-) which involves inflammation and infection.
• Do not use for congenital lacrimal mucocele (P39.1) or acquired lacrimal fistula (H04.6-).