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E11 ⚠ Non-billable

Type 2 diabetes mellitus

ICD-10-CM · FY2026 · Endocrine, Nutritional and Metabolic Diseases

Code
E11
System
ICD-10-CM
Billable
No — use specific code
Effective
FY2026
Chapter
Endocrine, Nutritional and Metabolic Diseases
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
📖 In-depth coding guide ICD-10 Code E11.9 — Type 2 Diabetes Guide →

Official coding notes

From CMS's ICD-10-CM Tabular List.

Includes
  • diabetes (mellitus) due to insulin secretory defect
  • diabetes NOS
  • insulin resistant diabetes (mellitus)
Excludes1 — never code together
  • 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)

Frequently asked questions

What is ICD-10 code E11?
ICD-10-CM code E11 represents Type 2 diabetes mellitus. It is a non-billable header code requiring a more specific subcategory in the Endocrine, Nutritional and Metabolic Diseases chapter, effective October 1, 2025 – September 30, 2026.
Is E11 billable?
No. E11 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is E11 in?
E11 belongs to the Endocrine, Nutritional and Metabolic Diseases chapter (E00–E89) of ICD-10-CM.

Related codes in the E11 category

E11.0 Type 2 diabetes mellitus with hyperosmolarity Non-billable E11.1 Type 2 diabetes mellitus with ketoacidosis Non-billable E11.2 Type 2 diabetes mellitus with kidney complications Non-billable E11.3 Type 2 diabetes mellitus with ophthalmic complications Non-billable E11.00 Type 2 diabetes mellitus with hyperosmolarity without nonketotic hyperglycemic-hyperosmolar coma (NKHHC) Billable E11.01 Type 2 diabetes mellitus with hyperosmolarity with coma Billable E11.10 Type 2 diabetes mellitus with ketoacidosis without coma Billable E11.11 Type 2 diabetes mellitus with ketoacidosis with coma Billable

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