M96.82: Delayed and/or non-union after fusion or arthrodesis

You have bones that have knitted too slowly after surgery.

After various operations, bones may knit too slowly. This can happen after an operation to brace your spine or joints, for example. In spinal bracing surgery, adjacent vertebrae are joined together. The vertebrae should then grow together. In an operation to brace joints, the bones that form the joint are connected.

There are various reasons why, after an operation, bones knit too slowly. The bones may not be properly connected. It is also possible that the bones or the surrounding tissue have become inflamed. Bones will also knit too slowly if they are not getting a proper supply of blood.

If the bones knit too slowly after an operation, it can cause problems. The affected site may then be less stable. You may be unable to use the affected part of your body properly. It can also be painful. The pain particularly occurs when the affected site is subjected to pressure.

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).