ICD-10 Code H04.579 – Stenosis of unspecified lacrimal sac (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H04.579 – Stenosis of unspecified lacrimal sac
What it is
H04.579 identifies narrowing of the lacrimal sac when the documentation does not specify the side or a more exact cause. It refers to an anatomic obstruction affecting tear drainage.
Clinical signs
Typical findings include tearing, recurrent overflow of tears, and possible swelling near the inner corner of the eye. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents lacrimal sac stenosis but does not identify whether it is right, left, or bilateral. It also fits when the record confirms narrowing of the lacrimal sac without a more specific diagnosis. Check documentation if another lacrimal drainage disorder is described.
Do not use for
Do not use H04.579 for canalicular, nasolacrimal duct, or punctal stenosis unless the lacrimal sac is specifically documented. Avoid this code when the side or a more precise disorder is stated.
Coding tip
If the note names the affected side, code the more specific lacrimal sac stenosis code instead of this unspecified code.