G91.1 is the ICD-10 code for Obstructive hydrocephalus. It is a four-character subcategory of G91 (Hydrocephalus), the most specific level in the WHO edition. It belongs to the block G90–G99 (Other disorders of the nervous system) in Chapter VI, Diseases of the nervous system.
- Code type
- Subcategory (4 characters)
- Chapter
- VI · G00–G99
- Classification
- WHO ICD-10, 2019 version
G91.1 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
G91.1Obstruktiv hydrocephalus
DG911Obstruktiv hydrocefalus
G91.1Obstruktiivinen vesipäisyys
G91.1Hydrocephalus occlusus
G91.1Hydrocéphalie obstructive (non communicante)
G91.1obstructieve hydrocefalie
G91.1Obstructive hydrocephalus
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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