ICD-10 Code E09.35 – Drug or chemical induced diabetes mellitus with proliferative diabetic retinopathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E09.35 – Drug or chemical induced diabetes mellitus with proliferative diabetic retinopathy
What it is
This code identifies diabetes caused by a drug or chemical, with proliferative diabetic retinopathy affecting the eyes. Use it when documentation links the diabetes to an external substance and confirms proliferative retinal disease.
Clinical signs
Clinical features include diabetic retinopathy with neovascular changes or other findings consistent with proliferative disease. Check documentation for the causal drug or chemical and for ophthalmology confirmation of retinal involvement.
When to use this code
Use this code when the record clearly states drug- or chemical-induced diabetes and the patient has proliferative diabetic retinopathy. It may appear in ophthalmology, endocrinology, or inpatient notes when both conditions are documented together. If causation or retinopathy type is unclear, check documentation.
Do not use for
Do not use it for type 1 or type 2 diabetes, or for diabetes without proliferative retinopathy. Do not assign it when the record only mentions background retinopathy, unspecified retinopathy, or suspected medication-related hyperglycemia.
Coding tip
Always verify both the drug-induced diabetes etiology and the proliferative retinopathy diagnosis before coding E09.35.