ICD-10 Code H04.439 – Chronic lacrimal mucocele of unspecified lacrimal passage (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H04.439 – Chronic lacrimal mucocele of unspecified lacrimal passage
What it is
This code identifies a chronic mucus-filled swelling in a lacrimal passage when the specific duct or canaliculus is not documented. It indicates a long-standing obstruction or retention problem in the tear drainage system.
Clinical signs
Typical findings include a persistent, soft swelling near the lacrimal apparatus and symptoms of impaired tear drainage. Clinical features vary; refer to documentation.
When to use this code
Use H04.439 when the record clearly states chronic lacrimal mucocele and does not name the exact lacrimal passage involved. It is appropriate for outpatient, specialty, or surgical documentation that confirms a chronic mucus collection in the tear drainage pathway. If the note identifies a specific site, code that more precise diagnosis instead.
Do not use for
Do not use this code for acute lacrimal swelling, simple obstruction without mucocele, or conditions with a documented specific lacrimal site. Check documentation.
Coding tip
Code only when “chronic” and “unspecified lacrimal passage” are both supported in the note.