ICD-11 classes
21 Symptoms, signs or clinical findings, not elsewhere...
Symptoms, signs or clinical findings of the nervous system
Symptoms or signs involving the nervous system
8A68 — Types of seizures
8A68.4 — Generalised tonic-clonic seizure

ICD-11 8A68.4 — Generalised tonic-clonic seizure

A seizure characterized by an abrupt onset with loss of consciousness and bilateral tonic extension of the trunk and limbs (tonic phase) followed by synchronous muscle jerking (clonic phase). Usually followed by a postictal phase, lasting for several minutes up to hours, characterized by initial mydriasis, body relaxation, hypotonia, and sleep.

The diagnosis includes nothing.

The diagnosis excludes nothing.

It has no clarifying diagnoses.

The diagnosis is coded elsewhere:

• Types of seizures #6937
• Types of seizures #9044