ICD-11 classes
08 Diseases of the nervous system
Movement disorders
8B88.2 — Hemifacial spasm
ICD-11 8B88.2 — Hemifacial spasm
Hemifacial spasm (HFS) is a movement disorder most commonly caused by vascular compression of the VII cranial nerve at its root exit zone from the brainstem. It manifests as involuntary contractions and twitching on ipsilateral side of the face.
The diagnosis includes nothing.
The diagnosis excludes nothing.
It has no clarifying diagnoses.
The diagnosis is coded elsewhere: