ICD-10 Code E10.36 – Type 1 diabetes mellitus with diabetic cataract (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E10.36 – Type 1 diabetes mellitus with diabetic cataract
What it is
This code identifies type 1 diabetes mellitus with a cataract attributed to the diabetes. Use it when the record links the cataract to the diabetic condition, not just when both diagnoses appear together.
Clinical signs
Clinical features vary; refer to documentation. Cataracts commonly present with blurred vision, glare, or reduced visual clarity, and the chart should show diabetes-related cataract involvement.
When to use this code
Use E10.36 when the provider documents type 1 diabetes and specifically notes diabetic cataract. It is appropriate for encounters focused on eye evaluation, ophthalmology follow-up, or diabetes care where the cataract is part of the documented diabetic complication. Check documentation if the cause is not clearly stated.
Do not use for
Do not use this code for cataracts without a documented diabetic link, or for cataracts due to other causes. If the record only says “diabetes” and “cataract” separately, check documentation before assigning E10.36.
Coding tip
Confirm that the provider explicitly connects the cataract to type 1 diabetes before coding E10.36.