Reintervention refers to a subsequent medical or surgical procedure performed after an initial treatment, usually because of a complication, failure, or incomplete resolution of the original problem.

In neurosurgery, “reintervention” typically implies:
A second surgery after an initial operation, often due to:

Postoperative bleeding (e.g., hematoma)

Infection

Residual lesion

Neurological deterioration

It can also refer to repeat endovascular procedures or wound revisions.

Example:

The patient required reintervention due to an epidural hematoma compressing the frontal lobe.