ICD-10 Code H04.543 – Stenosis of bilateral lacrimal canaliculi (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H04.543 – Stenosis of bilateral lacrimal canaliculi
What it is
H04.543 identifies narrowing of both lacrimal canaliculi, the small drainage channels that carry tears from the eye into the nose. This code describes bilateral obstruction or constriction affecting tear outflow.
Clinical signs
Common findings include excessive tearing, poor tear drainage, and possible reflux when the lacrimal system is irrigated. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents stenosis of both lacrimal canaliculi, whether congenital, acquired, or postoperative, if the record supports bilateral involvement. You may also use it when evaluation or procedure notes clearly identify bilateral canalicular narrowing as the diagnosis. Check documentation if laterality is unclear.
Do not use for
Do not use this code for isolated unilateral canalicular stenosis or for general epiphora without documented stenosis. If the note describes a different tear duct disorder, code the documented condition instead.
Coding tip
Confirm bilateral laterality in the ophthalmology note before assigning H04.543.