H16.3: Interstitial and deep keratitis

The cornea of your eye has become inflamed.

The transparent cornea is on the outside of the eye above the pupil. The cornea is considerably curved. In this way, light is focused in the eye. This is vital to be able to see clearly. The cornea is made up of several very thin layers.

The cornea of your eye has become inflamed. The inflammation affects the deeper layers of the cornea. The cornea can become inflamed when it is irritated or damaged. However, it can also become inflamed due to various pathogens, for example.

Inflammation of the cornea can be painful. It may feel as though there is something in one’s eye. The eye may water or excrete pus. It may also not be possible to see properly or bright light might be hard to tolerate. The eye may also be red.

Additional indicator

On medical documents, the ICD code is often appended by letters that indicate the diagnostic certainty or the affected side of the body.

  • G: Confirmed diagnosis
  • V: Tentative diagnosis
  • Z: Condition after
  • A: Excluded diagnosis
  • L: Left
  • R: Right
  • B: Both sides

Further information


This information is not intended for self-diagnosis and does not replace professional medical advice from a doctor. If you find an ICD code on a personal medical document, please also note the additional indicator used for diagnostic confidence.
Your doctor will assist you with any health-related questions and explain the ICD diagnosis code to you in a direct consultation if necessary.


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