8A66

ICD-11 MMS 2026-01

Status epilepticus

Description

Status epilepticus is defined as 5 min or more of (i) continuous clinical and/or electrographic 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.

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

Child codes

  • 8A66.0 – Convulsive status epilepticus
  • 8A66.1 – Non-convulsive status epilepticus
  • 8A66.Y – Other specified status epilepticus
  • 8A66.Z – Status epilepticus, unspecified

Sibling codes

  • 8A60 – Epilepsy due to structural or metabolic conditions or diseases
  • 8A61 – Genetic or presumed genetic syndromes primarily expressed as epilepsy
  • 8A62 – Epileptic encephalopathies
  • 8A63 – Seizure due to acute causes
  • 8A64 – Single seizure due to remote causes
  • 8A65 – Single unprovoked seizure
  • 8A67 – Acute repetitive seizures
  • 8A68 – Types of seizures
  • 8A6Y – Other specified epilepsy or seizures
  • 8A6Z – Epilepsy or seizures, unspecified

Foundation entity

Status epilepticus – http://id.who.int/icd/entity/906174792

Part of: 08: Diseases of the nervous system