ICD-10 Code H54.40 – Blindness, one eye, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H54.40 – Blindness, one eye, unspecified eye
What it is
This code identifies complete or near-complete loss of vision in one eye, with the affected eye not specified in the documentation. Use it when the record clearly states unilateral blindness but does not identify the right or left eye.
Clinical signs
Findings may include no light perception or profound visual loss in one eye. Clinical features vary; refer to documentation, and confirm whether the blindness is unilateral and whether the eye is identified.
When to use this code
Use H54.40 when the provider documents blindness in one eye and does not specify laterality. It is also appropriate when the chart confirms unilateral blindness without more detail. If the note names the right or left eye, use the more specific code instead.
Do not use for
Do not use this code for decreased vision, low vision, or legal blindness unless the record states one eye is blind. Do not assign it when the affected eye is documented; check documentation for the correct laterality-specific code.
Coding tip
Look for laterality first; if the eye is named, code more specifically and avoid H54.40.