ICD-10 Code H26.492 – Other secondary cataract, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H26.492 – Other secondary cataract, left eye
What it is
This code identifies a secondary cataract affecting the left eye. It means clouding or opacity has developed after prior eye disease, surgery, or another underlying cause, and the left eye is specified.
Clinical signs
Typical findings include decreased vision, glare, halos, or blurred vision in the left eye. Clinical features vary; refer to documentation, especially when the record describes posterior capsule opacity or another secondary cataract process.
When to use this code
Use H26.492 when the provider documents other secondary cataract in the left eye and no more specific subtype is stated. It is appropriate when the note clearly identifies the left eye as the affected side. Check documentation if the record only says cataract after surgery without laterality.
Do not use for
Do not use this code for primary age-related cataract, traumatic cataract, or congenital cataract. Do not assign it if the provider documents a different secondary cataract type or does not specify the left eye.
Coding tip
Verify both laterality and the exact cataract type in the ophthalmology note before assigning H26.492.