Unspecified keratoconjunctivitis, right eye

This code signifies an inflammatory condition affecting both the cornea and conjunctiva of the right eye, where the specific type or cause of the inflammation has not been identified. It indicates a general diagnosis of corneal and conjunctival inflammation without further etiological or morphological detail.

This code is appropriate when the physician's documentation clearly states "keratoconjunctivitis, right eye" without specifying the underlying cause (e.g., allergic, viral, bacterial, sicca). It should be used when the diagnostic workup is incomplete or the etiology remains undetermined at the time of coding.

• Avoid using this code if the physician specifies the type of keratoconjunctivitis (e.g., allergic, viral, phlyctenular); instead, select a more specific code from the H16.2 subcategory.
• Ensure the documentation explicitly mentions the right eye; otherwise, consider codes for unspecified eye or left eye.
• If later documentation provides a more specific diagnosis, update the code accordingly to reflect the highest level of specificity.