ICD-10 Code H26.493 – Other secondary cataract, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H26.493 – Other secondary cataract, bilateral
What it is
This code identifies a secondary cataract affecting both eyes. It usually refers to clouding or opacification that develops after prior eye disease, surgery, or lens-related changes, rather than a primary age-related cataract.
Clinical signs
Common findings include blurred or hazy vision, glare, and reduced visual clarity in both eyes. Clinical features vary; refer to documentation for the underlying cause and whether the opacity is posterior capsule-related or otherwise secondary.
When to use this code
Use H26.493 when the provider documents a secondary cataract in both eyes and does not specify a more precise type. It fits bilateral postoperative or acquired lens opacity when the record supports secondary cataract terminology. If the note only says cataract without laterality or secondary cause, check documentation.
Do not use for
Do not use this code for primary cataracts, unilateral disease, or unspecified cataract types. Also avoid it when the record describes another postoperative complication or a different ocular opacity. Check documentation.
Coding tip
Confirm both laterality and the word “secondary” in the provider note before assigning H26.493.