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ICD-10 diagnosis code

G40.9 Epilepsy, unspecified

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G40.9 is the ICD-10 code for Epilepsy, unspecified. It is a four-character subcategory of G40 (Epilepsy), the most specific level in the WHO edition. It belongs to the block G40–G47 (Episodic and paroxysmal disorders) in Chapter VI, Diseases of the nervous system.

Code type
Subcategory (4 characters)
Chapter
VI · G00–G99
Classification
WHO ICD-10, 2019 version

What G40.9 includes

Conditions and terms that are coded here.

  • Epileptic:
    • convulsions NOS
    • fits NOS
    • seizures NOS

G40.9 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

G40.9Epilepsi, ospecificerad

NorwayICD-10-NO

G40.9Uspesifisert epilepsi

DenmarkICD-10-DK

DG409Epilepsi UNS

FinlandICD-10-FI

G40.9Määrittämätön epilepsia

GermanyICD-10-GM

G40.9Epilepsie, nicht näher bezeichnet

FranceICD-10-FR

G40.9Épilepsie, sans précision

NetherlandsICD-10-NL

G40.9epilepsie, niet-gespecificeerd

United StatesICD-10-CM

Listed through more specific codes:

  • G40.901Epilepsy, unspecified, not intractable, with status epilepticus
  • G40.909Epilepsy, unspecified, not intractable, without status epilepticus
  • G40.911Epilepsy, unspecified, intractable, with status epilepticus
  • G40.919Epilepsy, unspecified, intractable, without status epilepticus

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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