ICD-10 Code H10.239 – Serous conjunctivitis, except viral, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H10.239 – Serous conjunctivitis, except viral, unspecified eye
What it is
This code identifies serous conjunctivitis affecting an unspecified eye, excluding viral causes. Use it when the record documents a nonviral, watery inflammation of the conjunctiva but does not specify laterality.
Clinical signs
Typical findings include conjunctival redness, tearing, irritation, and a watery or serous discharge. Clinical features vary; refer to documentation for the documented eye and any stated nonviral cause.
When to use this code
Use H10.239 when the provider documents serous conjunctivitis and the affected eye is not identified. It also fits cases where the note clearly excludes viral conjunctivitis but does not name a more specific cause or laterality. Check documentation if the chart is vague.
Do not use for
Do not use this code for viral conjunctivitis or when a different conjunctivitis type is documented. If the record specifies right, left, or bilateral eye, code to that laterality instead.
Coding tip
Confirm both the nonviral etiology and the unspecified eye before assigning H10.239.