E87.5: Hyperkalaemia

Your blood potassium levels were too high.

Potassium is very important for the cells in our body. The right amounts of potassium must be present in the blood for our cells to be able to work properly. The amount of potassium in the blood is affected for instance by messenger substances and the kidneys.

Your blood potassium levels were too high. For example, that can occur when the kidneys no longer work properly. In that case, not enough potassium can be excreted anymore. Some drugs can also increase the potassium content in the blood. The potassium content may also increase if the blood is too acidic.

You may have various symptoms if the potassium content in your blood is too high. Your heart may beat too quickly or you might have less strength in your muscles.

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).