ICD-10 Code H25.042 – Posterior subcapsular polar age-related cataract, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H25.042 – Posterior subcapsular polar age-related cataract, left eye
What it is
This code identifies an age-related cataract affecting the posterior subcapsular region of the left lens, with a polar pattern. Use it when documentation specifies this exact left-eye cataract type.
Clinical signs
Typical findings include gradual blurred vision, glare, and reduced reading vision. Clinical features vary; refer to documentation, especially if the record specifies laterality and posterior subcapsular polar morphology.
When to use this code
Use H25.042 when the provider documents a posterior subcapsular polar age-related cataract in the left eye. It is appropriate in ophthalmology assessments, preoperative evaluations, and problem lists when the diagnosis is clearly stated. If the note only says age-related cataract without eye or subtype, check documentation.
Do not use for
Do not use this code for cataracts in the right eye, bilateral cataracts, or unspecified age-related cataract. Do not use it when the cataract type is different or the record does not confirm posterior subcapsular polar involvement.
Coding tip
Confirm both laterality and cataract subtype in the ophthalmology note before assigning H25.042.