T86.11: Chronic decline in kidney function post-transplant

You have received a donor kidney that has been working less for a long time.

There are normally 2 kidneys in the body. They filter blood and create urine. They thus help to detoxify the body. Furthermore, the kidneys regulate the blood pressure and salt content in the blood, among other things. When one receives a donor kidney, it is usually placed at the bottom of the abdomen. An individual’s own kidneys usually remain in their appropriate place in the body.

The tissue from a donor should be as similar as possible to one’s own tissue so that it is not fought by the defense system. For example, the immune system also fights altered body cells or disease pathogens. Therefore, before receiving donor tissue, certain tissue characteristics are tested. For example, one such characteristic of a tissue is the blood group.

There can be various reasons if a donor kidney does not function properly. For example, it may be that the patient’s own immune system is fighting the donor kidney. The kidney tissue may then become inflamed and damaged, for example. The donor kidney may also not be properly supplied with blood.

You may have various symptoms if the donor kidney does not work properly. If the donor kidney does not produce enough urine, you excrete little urine. Too much fluid then remains in the body. This fluid can then collect in the legs, for example. If the donor kidney no longer works properly, substances can also collect in the body. These substances are normally excreted in the urine. The body can be damaged by these substances. You may additionally have problems with blood pressure or pain in your abdomen.

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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