Generalised tonic-clonic seizure

Description

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.

Coding note from above levels

Use additional code, if desired, to identify the type of seizure.

Index terms

Generalised tonic-clonic seizure
grand mal convulsion
grand mal seizure

Exclusions from above levels

6B60.4 – Dissociative neurological symptom disorder, with non-epileptic seizures
KB06 – Neonatal seizures
MG45 – Syncope

Show allHide

05 – Endocrine, nutritional or metabolic diseases
18 – Complications of pregnancy, childbirth and the puerperium
19 – Certain conditions originating in the perinatal period
22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

8A68.0 – Focal unaware seizure
8A68.1 – Absence seizures, atypical
8A68.2 – Absence seizures, typical
8A68.3 – Focal aware seizure
8A68.5 – Generalised myoclonic seizure
8A68.6 – Generalised tonic seizure
8A68.7 – Generalised atonic seizure
8A68.Y – Other specified type of seizure
8A68.Z – Type of seizure, unspecified

Foundation entity

Generalised tonic-clonic seizure – http://id.who.int/icd/entity/1091709256

Part of: 8A68: Types of seizures › 08: Diseases of the nervous system