ICD-10 Code E08.33 – Diabetes mellitus due to underlying condition with moderate nonproliferative diabetic retinopathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E08.33 – Diabetes mellitus due to underlying condition with moderate nonproliferative diabetic retinopathy
What it is
This code identifies diabetes caused by another underlying condition, with moderate nonproliferative diabetic retinopathy affecting the eyes. Use it when the record clearly links the diabetes and the retinal complication.
Clinical signs
Documentation may note retinal microaneurysms, hemorrhages, or other moderate nonproliferative changes. Clinical features vary; refer to documentation and the ophthalmology report for the exact severity.
When to use this code
Use E08.33 when the provider documents diabetes due to an underlying condition and specifies moderate nonproliferative diabetic retinopathy. The record should support both the secondary diabetes and the eye complication. If laterality or additional diabetic eye findings are documented, code them as directed in the record.
Do not use for
Do not use this code for type 1 or type 2 diabetes, or when retinopathy severity is not documented. Check documentation if the eye finding is unrelated to diabetes.
Coding tip
Verify that the underlying condition and the diabetic retinopathy are both documented before assigning E08.33.