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E10.9 — Type 1 diabetes mellitus without complications
E10.9
What this code means
Type 1 diabetes is an autoimmune condition in which the pancreas stops making insulin, so blood glucose rises.
Also called: type 1 diabetes, t1dm, insulin dependent diabetes.
When this code is used
Used for type 1 diabetes mellitus recorded without complications.
Where it sits in ICD-10-CM
Code E10.9 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 E10.9?
E10.9 is the ICD-10-CM diagnosis code for “Type 1 diabetes mellitus without complications”. Type 1 diabetes is an autoimmune condition in which the pancreas stops making insulin, so blood glucose rises.
When is code E10.9 used?
Used for type 1 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.