ICD-10 Code E13.33 – Other specified diabetes mellitus with moderate nonproliferative diabetic retinopathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E13.33 – Other specified diabetes mellitus with moderate nonproliferative diabetic retinopathy
What it is
This code identifies other specified diabetes mellitus with moderate nonproliferative diabetic retinopathy. Use it when the diabetes type is documented as other specified and the eye disease is a moderate nonproliferative form.
Clinical signs
Typical findings include retinal microaneurysms, hemorrhages, and other nonproliferative changes without neovascularization. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly links other specified diabetes mellitus to moderate nonproliferative diabetic retinopathy. You should code it from ophthalmology or primary care documentation that states both the diabetes category and the retinopathy severity.
Do not assume the stage from vague wording such as “diabetic eye disease.” Check documentation if the diabetes type, laterality, or retinopathy grade is unclear.
Do not use for
Do not use this code for proliferative retinopathy, diabetic macular edema alone, or unspecified retinopathy. Check documentation if the chart does not confirm moderate nonproliferative disease.
Coding tip
Code the diabetes type and retinopathy severity exactly as documented; if either element is missing, query the provider.