E10.3399 Type 1 diabetes mellitus with moderate nonproliferative diabetic retinopathy without…

Coding notes

From the ICD-10-CM FY2027 (effective October 1, 2026) tabular list. Notes on a parent code or category apply here too.

Includes

• brittle diabetes (mellitus)
• diabetes (mellitus) due to autoimmune process
• diabetes (mellitus) due to immune mediated pancreatic islet beta-cell destruction
• idiopathic diabetes (mellitus)
• juvenile onset diabetes (mellitus)
• ketosis-prone diabetes (mellitus)

Excludes1

Not coded together with this code. The exception is when the two conditions are unrelated to each other.

• diabetes mellitus due to underlying condition (E08.-)
• drug or chemical induced diabetes mellitus (E09.-)
• gestational diabetes (O24.4-)
• hyperglycemia NOS (R73.9)
• neonatal diabetes mellitus (P70.2)
• postpancreatectomy diabetes mellitus (E13.-)
• postprocedural diabetes mellitus (E13.-)
• secondary diabetes mellitus NEC (E13.-)
• type 2 diabetes mellitus (E11.-)