9C40.1ICD-11 MMS 2026-01
Optic neuritis
Description
Optic neuritis is a condition related to immune mediated inflammation of the optic nerve. It is commoner in women and can be the first presenting symptom of MS. The symptoms are those of blurred vision, pain on moving the eye and in the vast majority it is self limiting.
Exclusions from above levels
Child codes
Foundation children elsewhere
8A43– Neuromyelitis optica
Sibling codes
9C40.0– Infectious optic neuropathy9C40.2– Neuroretinitis9C40.3– Perineuritis of optic nerve9C40.4– Ischaemic optic neuropathy9C40.5– Compressive optic neuropathy9C40.6– Infiltrative optic neuropathy9C40.7– Traumatic optic neuropathy9C40.8– Hereditary optic neuropathy9C40.9– Glaucomatous optic neuropathy9C40.A– Optic disc swelling9C40.B– Optic atrophy9C40.Y– Other specified disorder of the optic nerve9C40.Z– Disorder of the optic nerve, unspecified
Foundation entity
Allowed postcoordination axes
Part of: 9C40: Disorder of the optic nerve › 09: Diseases of the visual system