ICD-10 Code E09.31 – Drug or chemical induced diabetes mellitus with unspecified diabetic retinopathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E09.31 – Drug or chemical induced diabetes mellitus with unspecified diabetic retinopathy
What it is
This code identifies diabetes caused by a drug or chemical, along with diabetic retinopathy that is documented but not further specified. Use it when the record links the eye disease to the diabetes, and the retinopathy type is not detailed.
Clinical signs
Clinical features vary; refer to documentation. Retinopathy may be noted on eye examination, with diabetic retinal changes recorded without a specified stage or macular status.
When to use this code
Use E09.31 when the provider documents drug- or chemical-induced diabetes and also documents unspecified diabetic retinopathy. This is appropriate when the medication or chemical cause is stated, but the retinal finding is not described in more detail. Check documentation if the cause or eye diagnosis is unclear.
Do not use for
Do not use this code for diabetes without retinopathy, or when the retinopathy is better specified by another ICD-10 code. Do not assign it if the diabetes is not documented as drug or chemical induced.
Coding tip
Verify both the diabetes cause and the retinopathy wording before assigning E09.31.