ICD-10 Code H04.539 – Neonatal obstruction of unspecified nasolacrimal duct (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H04.539 – Neonatal obstruction of unspecified nasolacrimal duct
What it is
This code identifies a newborn’s blocked tear drainage system when the exact nasolacrimal duct site is not specified. It is used for neonatal tear duct obstruction causing poor tear outflow.
Clinical signs
Common findings include excessive tearing, eye discharge, and crusting in a neonate. Clinical features vary; refer to documentation for laterality and whether the obstruction is congenital or acquired.
When to use this code
Use H04.539 when the record documents neonatal nasolacrimal duct obstruction but does not identify a more specific duct location. It fits newborn visits for persistent tearing or discharge attributed to tear drainage blockage. Code the documented diagnosis, not a suspected eye infection unless the provider confirms it.
Do not use for
Do not use this code for adult tear duct obstruction, dacryocystitis, or eye discharge without documented duct obstruction. Check documentation if the note describes a different ocular disorder.
Coding tip
If the chart gives a more specific nasolacrimal site or laterality, select that code instead of the unspecified neonatal code.