ICD-10 Code H47.212 – Primary optic atrophy, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H47.212 – Primary optic atrophy, left eye
What it is
H47.212 identifies primary optic atrophy affecting the left eye. It means the optic nerve has permanent wasting or pallor without another documented cause.
Clinical signs
Typical findings include decreased visual acuity, reduced color vision, and optic disc pallor on exam. Visual field loss may be present; clinical features vary, so refer to documentation.
When to use this code
Use this code when the record specifically documents primary optic atrophy in the left eye. It is appropriate when the provider identifies optic nerve atrophy without attributing it to another disease process. If laterality is clear and only the left eye is affected, this code is the best match.
Do not use for
Do not use it for optic atrophy caused by another condition, such as trauma, glaucoma, or inflammation, unless the record confirms a primary form. Do not code it when the eye or laterality is not documented; check documentation.
Coding tip
Confirm both “primary” and “left eye” in the note before assigning H47.212.