ICD-10 Code H04.3 – Acute and unspecified inflammation of lacrimal passages (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H04.3 – Acute and unspecified inflammation of lacrimal passages
What it is
H04.3 identifies inflammation of the lacrimal passages, which carry tears from the eye into the nose. Use it when the record describes an acute or unspecified inflammatory process affecting these tear drainage structures.
Clinical signs
Typical findings include tearing, tenderness, swelling, or redness near the inner corner of the eye. Clinical features vary; refer to documentation for the exact lacrimal structure involved and whether the condition is acute or unspecified.
When to use this code
Use H04.3 when the provider documents inflammation of the lacrimal passages without naming a more specific diagnosis. It also fits charted cases of acute lacrimal duct or passage inflammation when the record does not support a more detailed code. Check documentation if the note only says eye irritation or tearing.
Do not use for
Do not use this code for simple tearing, blocked tear ducts, or disorders of the lacrimal gland. If the documentation names a different lacrimal condition, code that diagnosis instead.
Coding tip
Look for the provider’s exact wording and laterality details, then code the most specific lacrimal diagnosis supported by the note.