H46.8
ICD-10-CMThis code represents inflammation of the optic nerve that does not fit the criteria for retrobulbar neuritis or ischemic optic neuropathy. It encompasses various less common or atypical forms of optic nerve inflammation, often presenting with acute or subacute vision loss, dyschromatopsia, and orbital pain.
Use this code when documentation specifies optic neuritis that is not clearly retrobulbar (H46.0-) or ischemic (H47.0-). This includes cases where the specific type of optic neuritis is not further defined, or when it's attributed to causes other than demyelination or ischemia, such as infectious or autoimmune etiologies not otherwise specified.
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