ICD-10 Code H26.4 – Secondary cataract (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H26.4 – Secondary cataract
What it is
H26.4 identifies a secondary cataract, meaning clouding or opacification that develops after prior cataract surgery or lens-related treatment. It reflects a postoperative lens capsule change, not a new primary cataract.
Clinical signs
Patients may report blurred or hazy vision, glare, or reduced visual clarity after cataract surgery. Clinical features vary; refer to documentation.
When to use this code
Use H26.4 when the record documents a secondary cataract, posterior capsule opacification, or similar postoperative lens opacity. Assign it for follow-up visits, ophthalmology evaluations, or procedures directed at this condition. Make sure the provider links the finding to the prior cataract surgery.
Do not use for
Do not use this code for an untreated primary cataract or for other postoperative eye complications. Check documentation if the note describes a different lens disorder or an unspecified visual complaint.
Coding tip
Confirm that the ophthalmology note identifies a secondary cataract and not a general postoperative change before assigning H26.4.