ICD-10 Code H16.039 – Corneal ulcer with hypopyon, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.039 – Corneal ulcer with hypopyon, unspecified eye
What it is
This code identifies a corneal ulcer accompanied by hypopyon, meaning inflammatory material is present in the anterior chamber of the eye. Use it when the affected eye is not specified.
Clinical signs
Typical findings include a corneal epithelial defect or ulcer with stromal inflammation and a visible layering of white blood cells in the anterior chamber. Clinical features vary; refer to documentation.
When to use this code
Use H16.039 when the record documents a corneal ulcer plus hypopyon, but does not identify the right, left, or bilateral eye. You should also use it when the provider clearly states “unspecified eye.” Verify that the note supports both the ulcer and the hypopyon.
Do not use for
Do not use this code for a corneal ulcer without hypopyon, or for hypopyon caused by another eye disorder alone. Check documentation if the eye laterality is specified or if the diagnosis is different.
Coding tip
Code laterality first when documented; use H16.039 only when the eye is truly unspecified.