Arteriovenous malformation of cerebral vessels

This code represents a congenital vascular anomaly within the brain where arteries and veins are directly connected, bypassing the capillary system. This abnormal tangle of blood vessels can lead to high-pressure blood flow directly into veins, increasing the risk of hemorrhage. It is a developmental defect, present from birth, though symptoms may manifest later in life.

Use this code for documented diagnoses of arteriovenous malformation (AVM) specifically located within the cerebral vessels. This applies to both symptomatic and asymptomatic AVMs identified through imaging studies such as MRI, CT angiography, or cerebral angiography. Documentation should clearly specify the cerebral location of the AVM.

• Ensure documentation specifies "cerebral" to differentiate from AVMs in other locations.
• Do not confuse with other cerebrovascular malformations like cavernous malformations or venous angiomas, which have distinct codes.
• Code any associated neurological symptoms or complications (e.g., hemorrhage, seizures) as additional diagnoses.