ICD-10 Code H16.243 – Ophthalmia nodosa, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H16.243 – Ophthalmia nodosa, bilateral
What it is
H16.243 identifies bilateral ophthalmia nodosa, an inflammatory eye condition caused by foreign material such as insect or plant hairs in both eyes. Use it when documentation specifically states bilateral involvement.
Clinical signs
Typical findings include conjunctival irritation, redness, tearing, pain, and a foreign-body sensation after exposure. Clinical features vary; refer to documentation for confirmed bilateral involvement and the specific irritant.
When to use this code
Use this code when the provider documents ophthalmia nodosa affecting both eyes. It is appropriate when the record links the diagnosis to retained hairs or similar foreign material and clearly identifies bilateral disease.
If the note only mentions eye irritation without the specific diagnosis, check documentation before coding. You should also confirm that both eyes are involved, since laterality matters for this code.
Do not use for
Do not use this code for nonspecific conjunctivitis, corneal abrasion, or a unilateral case. If the record does not support ophthalmia nodosa, check documentation.
Coding tip
Always verify the exact diagnosis wording and laterality in the provider note before assigning H16.243.