S86.0: Injury of Achilles tendon

You have injured muscles and tendons in your lower leg.

Tendons are made up of very firm connective tissue. Tendons attach muscles to bones. Muscles and tendons enable corresponding parts of the body to be moved.

Muscles and tendons can get injured in an accident, for example. You have damaged your Achilles tendon. The Achilles tendon is normally used to move the front of the foot downwards as when accelerating a vehicle.

Where exactly the problems are depends on which muscle or tendon has been damaged. The problems also depend on which part of the muscle or tendon has been damaged. When muscles and tendons in your lower leg are damaged, you are usually no longer able to move your leg properly. The movement is then no longer as strong as usual. The range of movement is often reduced, too. When muscles or tendons are badly damaged, they may also tear, for example. You can also have pain in the area affected.

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).