Other interstitial and deep keratitis, unspecified eye

This code signifies an inflammatory condition affecting the middle or deep layers of the cornea, not elsewhere classified, and without specifying which eye is affected. It encompasses various forms of keratitis that penetrate beyond the superficial corneal layers, leading to potential vision impairment.

Use this code when documentation indicates interstitial or deep keratitis, but the specific type (e.g., diffuse, sclerosing, disciform) is not specified, and the affected eye is also not documented. This code is appropriate when the physician's notes describe inflammation of the corneal stroma or endothelium without further detail.

• Avoid using this code if a more specific type of interstitial or deep keratitis is documented (e.g., H16.31- for diffuse interstitial keratitis).
• Always strive for laterality (left, right, bilateral) if documented; this code is for unspecified eye.
• Ensure documentation clearly supports "other" or "unspecified" if a more precise diagnosis cannot be determined.