8A68
Types of seizures
Subcategories
8A68.0 Focal unaware seizure
Previously termed “complex partial seizures”, define seizures originating within networks limited to one hemisphere and accompanied by loss of awareness (i.e., knowledge of self or environment). [1]
8A68.1 Absence seizures, atypical
Absence seizures with changes in tone more pronounced than in typical absences or with non-abrupt onset and/or cessation, often associated with slow, irregular, generalised spike-wave activity. [1]
8A68.2 Absence seizures, typical
Seizures characterised by sudden onset, interruption of ongoing activities, blank stare, possibly brief upward gaze deviation, unresponsiveness, duration from few seconds to half a minute, and rapid recovery. An EEG would show generalised epileptiform discharges during the event. [1]
8A68.3 Focal aware seizure
Focal aware seizures define seizures originating within networks limited to one hemisphere and accompanied by awareness (i.e., knowledge of self or environment). [1]
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. [1]
8A68.5 Generalised myoclonic seizure
Seizure characterized by sudden, rapid brief (<100msec) involuntary muscle jerks that may involve just one muscle or the entire trunk musculature and are associated with an ictal EEG discharge. Can occur bilaterally, unilaterally, synchronously or asynchronously. [1]
8A68.6 Generalised tonic seizure
A seizure characterised by sustained increase in muscle contraction lasting a few seconds to minutes. [1]
8A68.7 Generalised atonic seizure
Seizure characterised by sudden loss or diminution of muscle tone without apparent preceding myoclonic or tonic event lasting 1-2 sec, involving head, trunk, jaw, or limb muscles. [1]
Coded elsewhere
References
- World Health Organization. International Classification of Diseases, 11th Revision, for Mortality and Morbidity Statistics (ICD-11 MMS), 2026-01 release. World Health Organization; 2026.
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