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E11.9 — Type 2 diabetes mellitus without complications
E11.9
What this code means
Type 2 diabetes is a long-term condition in which the body resists insulin and gradually makes too little, raising blood glucose.
Also called: type 2 diabetes, t2dm, adult onset diabetes.
When this code is used
Used for type 2 diabetes mellitus recorded without complications.
Where it sits in ICD-10-CM
Code E11.9 belongs to Chapter 4: Endocrine, nutritional and metabolic diseases, which covers codes E00–E89 in the FY2027 ICD-10-CM tabular list. The official description above is copied verbatim from the CDC/NCHS FY2027 code file.
Learn more about this condition
Related symptoms
Watch: related videos
Frequently asked questions
What is ICD-10-CM code E11.9?
E11.9 is the ICD-10-CM diagnosis code for “Type 2 diabetes mellitus without complications”. Type 2 diabetes is a long-term condition in which the body resists insulin and gradually makes too little, raising blood glucose.
When is code E11.9 used?
Used for type 2 diabetes mellitus recorded without complications. It belongs to Chapter 4 of ICD-10-CM (Endocrine, nutritional and metabolic diseases).
This guide explains ICD-10-CM codes in plain language for patients, students and other readers. It is educational information only — not coding, billing or medical advice. The code recorded for any real encounter is assigned from the full clinical documentation by the treating team and qualified coders, and only they can decide which code fits a specific case.