ICD-10 Code H25.12 – Age-related nuclear cataract, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H25.12 – Age-related nuclear cataract, left eye
What it is
This code identifies an age-related cataract affecting the nucleus of the lens in the left eye. Use it when documentation clearly states nuclear cataract and specifies the left eye.
Clinical signs
Typical findings include gradual, painless blurring of vision and increasing difficulty with glare or night driving. Clinical features vary; refer to documentation.
When to use this code
Use H25.12 when the provider documents age-related nuclear cataract in the left eye, including preoperative evaluations and ophthalmology follow-up. It also fits when the left eye is the only eye specified and the cataract type is nuclear. If laterality or cataract type is unclear, check documentation.
Do not use for
Do not use this code for traumatic, congenital, or secondary cataracts. Avoid it when the record does not specify the left eye or does not identify the cataract as age-related nuclear.
Coding tip
Confirm both laterality and cataract type in the ophthalmology note before assigning H25.12.