ICD-10 Code E13.31 – Other specified diabetes mellitus with unspecified diabetic retinopathy (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code E13.31 – Other specified diabetes mellitus with unspecified diabetic retinopathy
What it is
This code identifies diabetes mellitus due to another specified cause, with diabetic retinopathy documented but not further specified. Use it when the diabetes type is known to be “other specified,” and the eye complication is present without detail.
Clinical signs
Clinical features vary; refer to documentation. Retinopathy may be noted on eye exam, retinal imaging, or ophthalmology assessment, but the record does not specify the subtype or severity.
When to use this code
Use this code when the provider documents other specified diabetes mellitus and also documents diabetic retinopathy without naming it as proliferative, nonproliferative, or another subtype. It may appear in problem lists, specialist notes, or assessment summaries. If the record gives more detail, code that specific retinopathy instead.
Do not use for
Do not use it when diabetes is type 1, type 2, or due to another clearly classified cause. Do not use it if the retinopathy type or severity is documented and a more specific code applies.
Coding tip
Match both the diabetes category and the eye complication exactly as documented, and query if the retinopathy subtype is unclear.