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E10

Non-billable

Type 1 diabetes mellitus

E10 is the ICD-10-CM code for Type 1 diabetes mellitus. It is a non-billable category code — use a more specific child code such as E10.1 for billing.

Status
Header (non-billable)
Chapter
E00-E89
Subcodes
9
Edition
FY2026

E00-E89 Endocrine, nutritional and metabolic diseases

What this means — in plain language

MedlinePlus · NIH

Diabetes means your blood glucose, or blood sugar , levels are too high. With type 1 diabetes, your pancreas does not make insulin. Insulin is a hormone that helps glucose get into your cells to give them energy. Without insulin, too much glucose stays in your blood. Over time, high blood glucose can lead to serious problems with your heart , eyes , kidneys , nerves , and gums and teeth. Type 1 diabetes happens most…

Read more about Diabetes Type 1 at MedlinePlus ↗
Type 1 diabetes ↗Healthy Living with Diabetes ↗Managing Diabetes ↗

Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.

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 here

  • •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.-)

Medications indicated for this condition

FDA labeling

Drugs whose FDA labeling lists this condition's category among its indications. Informational only — not a treatment recommendation or medical advice.

Conditions mapped to this code

MedlinePlus · NIH
Type 1 diabetesDiabetic Nerve ProblemsDiabetic Kidney Problems

Plain-language health-topic references grounded in MedlinePlus (NIH/NLM).

Frequently asked questions

What is ICD-10 code E10?
E10 is the ICD-10-CM code for "Type 1 diabetes mellitus". It falls under E00-E89 Endocrine, nutritional and metabolic diseases.
Is E10 a billable code?
No — E10 is a non-billable header code. Use a more specific child code (such as E10.1) for billing.
What are the subcodes of E10?
E10 has 9 more specific child codes, including E10.1, E10.2, E10.3.
What is excluded from E10?
Excludes1 (not coded here): diabetes mellitus due to underlying condition (E08.-); drug or chemical induced diabetes mellitus (E09.-); gestational diabetes (O24.4-); hyperglycemia NOS (R73.9).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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