R09.1: Pleurisy

The membrane around your lungs has become inflamed.

The lungs and ribs are surrounded by a smooth membrane. The membrane protects the lungs and the lungs follow the movements of the chest during breathing. In your case, this membrane has become inflamed, causing you to have pain when breathing. The membrane of the lungs and ribs can become inflamed due to pathogens or after injury to the chest.

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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