E11
⚠ Non-billable (Header)Type 2 diabetes mellitus
Endocrine, nutritional and metabolic diseases (E00-E89)
⚠️ This is a category header code — not billable. Use a more specific child code below.
ℹ️ Includes
- • diabetes (mellitus) due to insulin secretory defect
- • diabetes NOS
- • insulin resistant diabetes (mellitus)
❌ Excludes1
directThese codes are mutually exclusive. Never code them 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.-)
📋 Code Instructions
direct- • 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)
Child Codes (10)
Frequently Asked Questions
What is ICD-10 code E11?
ICD-10-CM code E11 is "Type 2 diabetes mellitus". It belongs to the category: Endocrine, nutritional and metabolic diseases (E00-E89).
Is E11 a billable ICD-10 code?
No, E11 is a non-billable header code. A more specific child code must be used for billing.
What codes are excluded with E11?
E11 has 8 Excludes1 rule(s). These codes are mutually exclusive and cannot be coded together on the same claim.
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Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)