ICD-10 Code E09.359 – Drug or chemical induced diabetes mellitus with proliferative diabetic retinopathy without macular edema (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E09.359 – Drug or chemical induced diabetes mellitus with proliferative diabetic retinopathy without macular edema
What it is
This code identifies diabetes caused by a drug or chemical, along with proliferative diabetic retinopathy, but without macular edema. Use it when the record links both the induced diabetes and the eye complication.
Clinical signs
Findings usually reflect diabetic eye disease, such as retinal neovascularization or other proliferative changes. Clinical features vary; refer to documentation.
When to use this code
Use E09.359 when the provider documents drug- or chemical-induced diabetes and specifies proliferative diabetic retinopathy without macular edema. The chart should support both the cause of diabetes and the retinal complication. Check documentation if the causal agent or eye findings are not clearly stated.
Do not use for
Do not use this code for diabetes not caused by a drug or chemical, or for retinopathy without proliferative disease. Do not use it when macular edema is documented instead of, or in addition to, the stated condition unless coding guidance supports that combination.
Coding tip
Verify that the record names the inducing substance and the exact retinopathy type before assigning E09.359.