ICD-10 Code H53.462 – Homonymous bilateral field defects, left side (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H53.462 – Homonymous bilateral field defects, left side
What it is
H53.462 identifies a visual field loss affecting the same side of both eyes, specifically the left side. It describes a neurologic visual defect, not a problem with the eye surface or lens.
Clinical signs
Patients may report missing objects on the left side, bumping into items, or difficulty reading. Clinical features vary; refer to documentation, but testing usually shows a left homonymous field defect.
When to use this code
Use this code when the record documents a homonymous bilateral visual field defect on the left. It is appropriate when the provider specifies left-sided field loss on exam or formal visual field testing. Check documentation if the note only mentions vision loss without laterality.
Do not use for
Do not use it for general blurred vision, monocular vision loss, or unspecified visual disturbance. If the chart does not confirm a homonymous left-sided defect, check documentation.
Coding tip
Code the laterality exactly as documented; “left side” is essential for H53.462.