Ophthalmia nodosa, bilateral

This code signifies an inflammatory condition of both eyes caused by foreign material, typically insect hairs or plant bristles, embedded in the conjunctiva or cornea. It presents as small, grayish-white nodules on the ocular surface, often leading to irritation, redness, and photophobia.

Apply this code when documentation explicitly states ophthalmia nodosa affecting both eyes. This diagnosis is typically made upon slit lamp examination revealing the characteristic nodules and often a history of exposure to irritants like caterpillar hairs.

• Ensure documentation specifies "bilateral" involvement; otherwise, use the appropriate unilateral code.
• Distinguish from other forms of conjunctivitis or keratitis; ophthalmia nodosa has a distinct etiology and presentation.
• Code any associated foreign body (e.g., T15.02XA for foreign body in conjunctival sac, bilateral) as a secondary diagnosis if documented.