N48.4: Impotence of organic origin

You cannot achieve a full erection.

The penis contains erectile tissue. The erectile tissue of the penis becomes engorged with blood when you are sexually aroused. This causes you to have an erection. If the erectile tissue of the penis is not filled with enough blood, the penis does not become erect.

There is a physical reason why you cannot achieve a full erection. You may have a vascular disorder, for example. This prevents the erectile tissue of the penis from becoming properly engorged with blood. There may also be an imbalance of certain messenger substances in your body. Messenger substances are also important for ensuring that the erectile tissue of the penis can become engorged with blood. Some medication or older age can also be responsible for preventing proper erections.

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).