ICD-10 Code H04.43 – Chronic lacrimal mucocele (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H04.43 – Chronic lacrimal mucocele
What it is
Chronic lacrimal mucocele is a persistent mucus-filled swelling involving the lacrimal drainage system. It usually reflects long-standing blockage with retained secretions.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include a chronic, localized swelling near the medial canthus or lacrimal sac area, sometimes with tearing or intermittent discharge.
When to use this code
Use this code when the provider documents a chronic lacrimal mucocele or a chronic mucus retention lesion of the lacrimal apparatus. It fits cases where the diagnosis is established and the condition is not described as acute. If the note only mentions tearing, swelling, or obstruction, check documentation before assigning this code.
Do not use for
Do not use it for acute dacryocystitis, simple epiphora, or unspecified lacrimal obstruction unless the record specifically states chronic lacrimal mucocele. Check documentation for the exact diagnosis.
Coding tip
Code from the provider’s exact wording and confirm whether the lesion is chronic, because lacrimal swelling alone is not enough.