Other keratoconjunctivitis, left eye

This code signifies an inflammatory condition affecting both the cornea and conjunctiva of the left eye, not otherwise specified as a specific type of keratoconjunctivitis (e.g., phlyctenular, limbic). It encompasses various forms of corneal and conjunctival inflammation that don't fit more specific diagnostic categories.

Use this code when documentation clearly indicates keratoconjunctivitis affecting the left eye, and the specific etiology or type is not further defined (e.g., "left eye keratoconjunctivitis, unspecified type"). Supporting documentation should include a diagnosis from an ophthalmologist or optometrist detailing the affected eye and the general nature of the inflammation.

• Always specify laterality when documented; this code is for the left eye only.
• Avoid using this code if a more specific type of keratoconjunctivitis (e.g., H16.21- for phlyctenular) is identified.
• Query the provider for more specific documentation if the type of keratoconjunctivitis is unclear but could be further specified.