World Health Organization · 2026-01 · English

9C40 Disorder of the optic nerve

Official WHO ICD-11 MMS tabulation. This international classification is separate from US ICD-10-CM. For complete instructions and postcoordination, consult the WHO browser.

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More specific codes

9C40.0Infectious optic neuropathy 9C40.1Optic neuritis 9C40.2Neuroretinitis 9C40.3Perineuritis of optic nerve 9C40.4Ischaemic optic neuropathy 9C40.5Compressive optic neuropathy 9C40.6Infiltrative optic neuropathy 9C40.7Traumatic optic neuropathy 9C40.8Hereditary optic neuropathy 9C40.9Glaucomatous optic neuropathy 9C40.AOptic disc swelling 9C40.BOptic atrophy 9C40.YOther specified disorder of the optic nerve 9C40.ZDisorder of the optic nerve, unspecified

US · ICD-10-CM · CDC/NCHS →