6.3 Headache attributed to unruptured vascular malformation

Coded elsewhere:
Headache attributed to ruptured vascular malformation is coded as 6.2.1 Headache attributed to intracerebral haemorrhage or 6.2.2 Headache attributed to subarachnoid haemorrhage or, rarely, 6.2.3 Headache attributed to non traumatic acute subdural haemorrhage.

Description:
Headache secondary to an unruptured intracranial vascular malformation (occurring without haemorrhage). Depending of the type of malformation, the headache may have a chronic course with recurrent attacks mimicking episodic primary headaches, or an acute and self-limited course.