Q03 is the ICD-10 code for Congenital hydrocephalus. It is a three-character category divided into 4 subcodes; use the subcode whenever the record supports that level of detail. It belongs to the block Q00–Q07 (Congenital malformations of the nervous system) in Chapter XVII, Congenital malformations, deformations and chromosomal abnormalities.
- Code type
- Category (3 characters)
- Chapter
- XVII · Q00–Q99
- Classification
- WHO ICD-10, 2019 version
What Q03 includes
Conditions and terms that are coded here.
- hydrocephalus in newborn
What Q03 excludes
Conditions that look similar but belong under another code.
- Arnold-Chiari syndrome Q07.0
- hydrocephalus:
- acquired NOS G91.-
- acquired, of newborn P91.7
- due to congenital toxoplasmosis P37.1
- with spina bifida Q05.0-Q05.4
Subcodes of Q03
Q03 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
DQ03Medfødt hydrocefalus
Q03Synnynnäinen hydrokefalia (vesipäisyys)
Q03Angeborener Hydrozephalus
Q03Hydrocéphalie congénitale
Q03congenitale hydrocefalus
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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