H47.4 is the ICD-10 code for Disorders of optic chiasm. It is a four-character subcategory of H47 (Other disorders of optic [2nd] nerve and visual pathways), the most specific level in the WHO edition. It belongs to the block H46–H48 (Disorders of optic nerve and visual pathways) in Chapter VII, Diseases of the eye and adnexa.
- Code type
- Subcategory (4 characters)
- Chapter
- VII · H00–H59
- Classification
- WHO ICD-10, 2019 version
H47.4 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
H47.4Sykdom i chiasma opticum
DH474Forandring i chiasma opticum
H47.4Näköhermoristin sairaus
H47.4Affektionen des Chiasma opticum
H47.4Affections du chiasma optique
H47.4aandoeningen van chiasma opticum
Listed through more specific codes:
- H47.41Disorders of optic chiasm in (due to) inflammatory disorders
- H47.42Disorders of optic chiasm in (due to) neoplasm
- H47.43Disorders of optic chiasm in (due to) vascular disorders
- H47.49Disorders of optic chiasm in (due to) other disorders
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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