ICD-10 Code H04.339 – Acute lacrimal canaliculitis of unspecified lacrimal passage (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H04.339 – Acute lacrimal canaliculitis of unspecified lacrimal passage
What it is
This code identifies an acute infection and inflammation of a lacrimal canaliculus, the small channel that drains tears from the eye. “Unspecified lacrimal passage” means the record does not identify the exact side or passage.
Clinical signs
Typical findings include localized tenderness, swelling, redness, and discharge near the inner eyelid margin. Clinical features vary; refer to documentation for the affected passage and whether the process is truly acute.
When to use this code
Use H04.339 when the provider documents acute canaliculitis and does not specify right, left, or another lacrimal passage. It fits encounters where the diagnosis is confirmed clinically or by ophthalmology documentation. If laterality is recorded, choose the more specific code.
Do not use for
Do not use this code for chronic canaliculitis, dacryocystitis, or nonspecific tearing without documented canalicular infection. Check documentation if the note only mentions eyelid infection or conjunctivitis.
Coding tip
Review the ophthalmology note for laterality and acuity before assigning the unspecified code.