ICD-10 Code E13.339 – Other specified diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edema (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E13.339 – Other specified diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edema
What it is
This code identifies diabetes from another specified cause with moderate nonproliferative diabetic retinopathy in both eyes or one eye, and no macular edema. It tells you the eye disease is present, but swelling of the macula is not documented.
Clinical signs
Clinical features vary; refer to documentation. Typical findings include retinal microaneurysms, hemorrhages, and other moderate nonproliferative changes on eye examination, with no mention of macular edema.
When to use this code
Use this code when the record links diabetes mellitus of another specified type to moderate nonproliferative diabetic retinopathy and specifically states that macular edema is absent. You should rely on the ophthalmology note, retinal exam, or provider assessment. If the diabetes type or eye findings are unclear, check documentation.
Do not use for
Do not use this code if macular edema is documented, if retinopathy severity is mild or severe, or if the eye findings are not attributed to diabetes. Check documentation for the correct diabetes category.
Coding tip
Always code the diabetes type and the retinopathy severity together, and verify that “without macular edema” is explicitly documented.