ICD-10 Code H53.122 – Transient visual loss, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H53.122 – Transient visual loss, left eye
What it is
This code identifies a temporary loss of vision affecting the left eye. The episode resolves, but the cause may still need evaluation.
Clinical signs
Patients may report sudden blurred vision, dimming, or a brief “curtain” over the left eye. Clinical features vary; refer to documentation.
When to use this code
Use H53.122 when documentation clearly states transient visual loss limited to the left eye. It fits brief, resolved episodes recorded as monocular vision loss. If the note only says visual disturbance without eye laterality, check documentation before coding.
Do not use for
Do not use this code for permanent vision loss, unspecified visual disturbance, or bilateral symptoms. If the record does not specify the left eye, do not assume laterality.
Coding tip
Confirm both transient nature and left-eye laterality in the provider note before assigning H53.122.