M96.81: Flail chest following chest surgery

Your chest is no longer stable after an operation.

The sternum is a flat bone at the front of the chest. The ribs and the two collarbones are attached to the sternum.

Bones are sometimes separated for a chest operation. It may then be that the chest is no longer so stable after the operation.

If the chest is not properly stable, it is then sometimes painful to breathe or if certain areas are pressed.

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.


Provided by the non-profit organization “Was hab’ ich?” gemeinnützige GmbH on behalf of the Federal Ministry of Health (BMG).