ICD-10 Code E13.329 – Other specified diabetes mellitus with mild nonproliferative diabetic retinopathy without macular edema (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E13.329 – Other specified diabetes mellitus with mild nonproliferative diabetic retinopathy without macular edema
What it is
This code identifies diabetes mellitus that is not type 1 or type 2, along with mild nonproliferative diabetic retinopathy in the eye, and no macular edema. Use it when the record clearly links the diabetes to this retinal complication.
Clinical signs
Findings usually include early diabetic retinal changes such as microaneurysms or small retinal hemorrhages. Clinical features vary; refer to documentation, and confirm that macular edema is not present.
When to use this code
Use E13.329 when the provider documents other specified diabetes mellitus and specifically states mild nonproliferative diabetic retinopathy without macular edema. It is appropriate for ophthalmology or diabetes follow-up notes that identify the eye complication and the diabetes category. Check documentation if the retinal severity or edema status is unclear.
Do not use for
Do not use this code if the diabetes is type 1 or type 2, or if macular edema is documented. Also avoid it when the retinopathy stage is different or not specified. Check documentation.
Coding tip
Always code the diabetes type and eye finding together, and verify that “without macular edema” is explicitly documented.