ICD-10 Code H47.099 – Other disorders of optic nerve, not elsewhere classified, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H47.099 – Other disorders of optic nerve, not elsewhere classified, unspecified eye
What it is
This code identifies a documented optic nerve disorder that does not fit a more specific diagnosis and is recorded for an unspecified eye. Use it when the chart confirms optic nerve involvement but laterality is not stated.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include visual loss, reduced color vision, or optic disc abnormalities, but the record should support an optic nerve disorder rather than a retinal or refractive problem.
When to use this code
Use H47.099 when the provider documents another optic nerve disorder and does not specify the affected eye. It is appropriate when the condition is not better described by a more specific optic nerve code. If the note names the eye, laterality-specific coding is preferred.
Do not use for
Do not use this code for glaucoma, optic neuritis, or optic atrophy unless the documentation specifically supports an unspecified “other” optic nerve disorder. Check documentation if the diagnosis is uncertain.
Coding tip
Code the most specific optic nerve diagnosis and laterality available; if the eye is not documented, H47.099 is the fallback.