Neurotrophic keratoconjunctivitis, bilateral

This diagnosis code signifies a chronic, non-infectious inflammatory condition affecting both eyes, characterized by corneal and conjunctival damage due to impaired nerve supply. It results from a decrease or absence of corneal sensation, leading to epithelial breakdown, ulceration, and potential perforation.

Use this code when documentation explicitly states neurotrophic keratoconjunctivitis affecting both eyes. This condition is often associated with trigeminal nerve damage, herpes zoster ophthalmicus, or chemical burns. Supporting documentation should include findings of decreased corneal sensation and characteristic corneal/conjunctival changes.

• Ensure the documentation specifies bilateral involvement; otherwise, use a unilateral code.
• Distinguish from other forms of keratoconjunctivitis, such as allergic or infectious, which have different underlying etiologies.
• Code any underlying cause of the neurotrophic condition, such as trigeminal neuropathy, as a secondary diagnosis.