H13.3: Ocular pemphigoid

Your conjunctiva has become inflamed due to a disorder in your immune system.

Your immune system is attacking certain mucus membrane elements. This is why your conjunctiva has been inflamed for a long time, and damaged as a result. The transparent conjunctiva covers the eye and the inside of the eyelids. Along with the tears, the conjunctiva forms a liquid film on the eye. Together, the conjunctiva, the eyelids, and the liquid film on the eye all protect the eye from external agents. The conjunctiva also helps defend against pathogens.

Other mucus membranes also often get inflamed, for example in the mouth and throat. There may then be blisters in one’s mouth and swallowing may be difficult. When someone is unable to eat and swallow properly, they can lose weight too.

When the conjunctiva is inflamed, the eye is usually red and it can water. The conjunctiva may be so badly damaged that it scars over and contracts. This can badly affect the eye. Then it may no longer be possible to move one’s eye normally and one’s vision will gradually get worse.

The disorder is usually lifelong. Symptoms can vary in severity. There may also be psychological effects.

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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