ICD-10 Code H04.55 – Acquired stenosis of nasolacrimal duct (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H04.55 – Acquired stenosis of nasolacrimal duct
What it is
H04.55 identifies acquired narrowing of the nasolacrimal duct, the drainage channel that carries tears from the eye into the nose. This code applies when the obstruction develops after birth, not from a congenital defect.
Clinical signs
Typical findings include tearing that drains poorly, tear overflow, and recurrent eye watering. Clinical features vary; refer to documentation for the specific cause, laterality, and any associated inflammation.
When to use this code
Use H04.55 when the record documents acquired stenosis or narrowing of the nasolacrimal duct as the diagnosis. It is appropriate for chronic tearing or confirmed drainage obstruction when the provider identifies the condition as acquired. Check documentation if the note only says epiphora without a clear cause.
Do not use for
Do not use this code for congenital nasolacrimal duct obstruction or for tearing without documented duct stenosis. If the provider describes a different lacrimal disorder, code that condition instead.
Coding tip
Look for the word “acquired” in the assessment and confirm the duct, not just the symptom of tearing.