ICD-Code Q75.0: Craniosynostosis
The cranial sutures fuse (ossify) earlier than normal.
The upper, lateral and posterior part of the skull is called the calvaria or skullcap. The skullcap (calvaria) is made up of several bone plates. These bone plates are connected to one another by the cranial sutures.Mobile sutures allow the child’s head to grow. Once the skull has stopped growing, the cranial sutures ossify (turn to bone) and fuse together.
There are various reasons why the cranial sutures may fuse earlier than normal. For example, various diseases cause the cranial sutures to ossify too early. Early ossification may also be caused by infections or harmful environmental exposures during pregnancy. In some cases, however, no reason for early ossification is found.
If individual cranial sutures ossify too early, the growth of the skull is not symmetrical. This may change the shape of the skull. For example, the skull may appear more pointed or angular than normal. If several cranial sutures ossify too early, health problems may also arise. Skull growth may be restricted so that the head is smaller than normal. As a result, the brain may not have enough space inside the skull. Pressure on the brain may increase. This may cause nausea and vomiting, for example.
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
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
The explanation of the ICD code was provided by the non-profit organization “Was hab’ ich?” gemeinnützige GmbH on behalf of the Federal Ministry of Health (BMG).