ICD-10 Code H04.433 – Chronic lacrimal mucocele of bilateral lacrimal passages (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H04.433 – Chronic lacrimal mucocele of bilateral lacrimal passages
What it is
This code identifies a chronic mucus-filled dilation of both lacrimal passages. It indicates a longstanding obstructive process affecting the tear drainage system on both sides.
Clinical signs
Findings may include persistent swelling near the inner eye or recurrent epiphora. Clinical features vary; refer to documentation for bilateral involvement and chronicity.
When to use this code
Use this code when the record specifically documents a chronic lacrimal mucocele involving both lacrimal passages. You should have clear provider wording that the condition is bilateral and not an acute obstruction. If the note only says tearing or dacryocystitis, check documentation before coding.
Do not use for
Do not use it for unilateral lacrimal mucocele or for nonspecific tear duct obstruction. Do not assign it when the chart does not confirm chronic bilateral disease.
Coding tip
Confirm both laterality and chronicity in the provider note before assigning H04.433.