Anesthesia and hypoesthesia of cornea, right eye

This code signifies a diminished or absent sensation in the cornea of the right eye. This can manifest as a reduced ability to feel touch, temperature, or pain stimuli on the corneal surface. It indicates a neurological impairment affecting the trigeminal nerve's ophthalmic division.

Use this code when a patient presents with objective findings of decreased or absent corneal sensation in the right eye, often identified during a slit lamp examination with a wisp of cotton. This condition can arise from various causes, including herpes simplex keratitis, corneal trauma, neurotrophic keratopathy, or complications from ocular surgery. Documentation should clearly state "corneal anesthesia" or "corneal hypoesthesia" and specify the right eye.

• Always specify the laterality (right, left, or bilateral) as indicated in the clinical documentation.
• Do not confuse with other corneal disorders like keratitis or corneal edema, unless corneal anesthesia is also explicitly documented.
• Consider sequencing this code after the underlying cause of the corneal anesthesia, if known and documented (e.g., H19.11 for herpesviral keratitis).