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Q98.0: Klinefelter syndrome karyotype 47,XXY

You have a congenital disorder, which means you were born with it. This disorder is called Klinefelter syndrome.

When beginning its development, every single cell in the body contains a complete blueprint of the body. This blueprint consists of genetic information. The genetic information is encrypted in the chromosomes. Every human cell normally contains 23 chromosome pairs, i.e. a total of 46 chromosomes.

The X chromosome and the Y chromosome determine a person’s biological gender. Men normally have one X chromosome and one Y chromosome. Women normally have 2 X chromosomes.

You have 2 X chromosomes and one Y chromosome with male sexual characteristics.

Klinefelter syndrome causes the body to form an insufficient quantity of the hormone testosterone. Testosterone is a typical male hormone.

You have various characteristics and symptoms due to a lack of testosterone. These characteristics and symptoms usually only occur in puberty or afterwards. Puberty is when children grow into young adults. This is when they develop the typical sexual characteristics.

This disorder can cause puberty to start later than normal. You may also be especially tall. The penis or testicles may also stay smaller than normal. The breasts can also be female-appearing. You may also find it hard to have children despite unprotected sex.

The lack of the hormone testosterone can also make bones less strong. This can increase the risk of bone fractures in adulthood.

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

Note

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.

Source

Provided by the non-profit organization “Was hab’ ich?” gemeinnützige GmbH on behalf of the Federal Ministry of Health (BMG).