ICD-10 Code H10.401 – Unspecified chronic conjunctivitis, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.401 – Unspecified chronic conjunctivitis, right eye
What it is
This code identifies chronic inflammation of the conjunctiva affecting the right eye when the specific cause is not documented. Use it for a persistent conjunctivitis diagnosis limited to the right eye.
Clinical signs
Typical findings include ongoing redness, irritation, tearing, or discharge in the right eye. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents chronic conjunctivitis of the right eye but does not specify the type, organism, or other cause. It also fits when the record clearly states an unspecified chronic conjunctival inflammation limited to the right eye. Check documentation if laterality is unclear.
Do not use for
Do not use it for acute conjunctivitis, allergic conjunctivitis, or cases documented for the left eye or both eyes. If the cause is identified, select the more specific code.
Coding tip
Verify chronicity and laterality in the note before assigning H10.401.