8A66.0

ICD-11 MMS 2026-01

Convulsive status epilepticus

Description

Convulsive status epilepticus is defined as 5 min or more of (i) continuous clinical convulsive seizure activity or (ii) recurrent seizure activity without recovery (returning to baseline) between seizures.

Coding note from above levels

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

Index terms

  • Convulsive status epilepticus
  • Tonic-clonic status epilepticus
  • Grand mal status, epileptic
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  • grand mal status
  • grand mal status epilepticus
  • Tonic status epilepticus
  • Clonic status epilepticus
  • Myoclonic status epilepticus

Exclusions from above levels

  • MG45 – Syncope
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
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  • 19 – Certain conditions originating in the perinatal period
  • 22 – Injury, poisoning or certain other consequences of external causes

Sibling codes

  • 8A66.1 – Non-convulsive status epilepticus
  • 8A66.Y – Other specified status epilepticus
  • 8A66.Z – Status epilepticus, unspecified

Foundation entity

Convulsive status epilepticus – http://id.who.int/icd/entity/338178896

Part of: 8A66: Status epilepticus › 08: Diseases of the nervous system