ICD-10 Code E09.339 – Drug or chemical induced diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edema (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E09.339 – Drug or chemical induced diabetes mellitus with moderate nonproliferative diabetic retinopathy without macular edema
What it is
This code identifies diabetes caused by a drug or chemical, with moderate nonproliferative diabetic retinopathy affecting the retina and no macular edema. Use it when the record clearly links the diabetes to the exposure.
Clinical signs
Documentation may note retinal microaneurysms, hemorrhages, or exudates consistent with moderate nonproliferative retinopathy. Clinical features vary; refer to documentation for the specific eye findings and causative agent.
When to use this code
Use E09.339 when the provider documents drug- or chemical-induced diabetes and confirms moderate nonproliferative diabetic retinopathy without macular edema. It applies when the retinal disease is present in either eye and no edema is reported. Check documentation if the cause of diabetes or the retinopathy severity is unclear.
Do not use for
Do not use this code for diabetes not caused by a drug or chemical, or when macular edema is documented. Do not assign it if the retinopathy severity is different or unspecified.
Coding tip
Verify both the diabetes etiology and the exact retinopathy severity before coding; if either is missing, check documentation.