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ICD-10 diagnosis code

Q04.5 Megalencephaly

This page in Swedish

Q04.5 is the ICD-10 code for Megalencephaly. It is a four-character subcategory of Q04 (Other congenital malformations of brain), the most specific level in the WHO edition. It belongs to the block Q00–Q07 (Congenital malformations of the nervous system) in Chapter XVII, Congenital malformations, deformations and chromosomal abnormalities.

Code type
Subcategory (4 characters)
Chapter
XVII · Q00–Q99
Classification
WHO ICD-10, 2019 version

Q04.5 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

Q04.5Megalencefali

NorwayICD-10-NO

Q04.5Megalencefali

DenmarkICD-10-DK

DQ045Megalencephalus

FinlandICD-10-FI

Listed through more specific codes:

  • Q04.50Perheittäin esiintyvä hyvänlaatuinen isopäisyys
  • Q04.51Megalenkefalia
GermanyICD-10-GM

Q04.5Megalenzephalie

FranceICD-10-FR

Q04.5Mégalencéphalie

NetherlandsICD-10-NL

Q04.5megalencefalie

United StatesICD-10-CM

Q04.5Megalencephaly

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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