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E11

Non-billable

Type 2 diabetes mellitus

E11 is the ICD-10-CM code for Type 2 diabetes mellitus. It is a non-billable category code — use a more specific child code such as E11.0 for billing.

Status
Header (non-billable)
Chapter
E00-E89
Subcodes
10
Edition
FY2026

E00-E89 Endocrine, nutritional and metabolic diseases

What this means — in plain language

MedlinePlus · NIH

What is type 2 diabetes? Type 2 diabetes is a disease in which your blood glucose, or blood sugar , levels are too high. Glucose is your main source of energy. It comes from the foods you eat. A hormone called insulin helps the glucose get into your cells to give them energy. If you have diabetes, your body doesn't make enough insulin or doesn't use insulin well. The glucose then stays in your blood and not enough…

Read more about Diabetes Type 2 at MedlinePlus ↗
Type 2 diabetes ↗Healthy Living with Diabetes ↗Managing Diabetes ↗

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

Includes

  • •diabetes (mellitus) due to insulin secretory defect
  • •diabetes NOS
  • •insulin resistant diabetes (mellitus)

Excludes1 — not coded here

  • •diabetes mellitus due to underlying condition (E08.-)
  • •drug or chemical induced diabetes mellitus (E09.-)
  • •gestational diabetes (O24.4-)
  • •neonatal diabetes mellitus (P70.2)
  • •postpancreatectomy diabetes mellitus (E13.-)
  • •postprocedural diabetes mellitus (E13.-)
  • •secondary diabetes mellitus NEC (E13.-)
  • •type 1 diabetes mellitus (E10.-)

Use additional code

  • •code to identify control using:
  • •injectable non-insulin antidiabetic drugs (Z79.85)
  • •insulin (Z79.4)
  • •oral antidiabetic drugs (Z79.84)
  • •oral hypoglycemic drugs (Z79.84)

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 2 diabetes

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

Frequently asked questions

What is ICD-10 code E11?
E11 is the ICD-10-CM code for "Type 2 diabetes mellitus". It falls under E00-E89 Endocrine, nutritional and metabolic diseases.
Is E11 a billable code?
No — E11 is a non-billable header code. Use a more specific child code (such as E11.0) for billing.
What are the subcodes of E11?
E11 has 10 more specific child codes, including E11.0, E11.1, E11.2.
What is excluded from E11?
Excludes1 (not coded here): diabetes mellitus due to underlying condition (E08.-); drug or chemical induced diabetes mellitus (E09.-); gestational diabetes (O24.4-); neonatal diabetes mellitus (P70.2).

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

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