ICD-10 Code B02.31 – Zoster conjunctivitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code B02.31 – Zoster conjunctivitis
What it is
B02.31 identifies conjunctivitis caused by herpes zoster infection affecting the eye surface. Use it when documentation states shingles involves the conjunctiva.
Clinical signs
Typical findings include eye redness, irritation, tearing, and conjunctival inflammation. Clinical features vary; refer to documentation, especially when zoster eye involvement is described with other ocular findings.
When to use this code
Use this code when the provider documents zoster conjunctivitis, herpes zoster conjunctivitis, or shingles affecting the conjunctiva. It may appear with facial or ophthalmic zoster notes if the conjunctival involvement is clearly stated. Check documentation if the record only says eye pain or rash.
Do not use for
Do not use B02.31 for nonspecific conjunctivitis without herpes zoster, or for other zoster eye complications unless the conjunctiva is specifically involved. Check documentation.
Coding tip
Confirm the note names conjunctival involvement, not just ophthalmic shingles or eye symptoms.