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Q89.4: Conjoined twins

While twins were developing in the womb, the two embryos did not fully separate.

A pregnancy with twins can occur if, for example, a fertilized egg cell divides into 2 embryos. The egg cell usually splits into 2 quite separate embryos. If the embryos do not completely separate in the womb, they stay connected to one another at certain parts of their bodies. For example, the twins can be fused at the head, the chest or the behind. The twins may also share organs or body parts.

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).