E11
ICD-10Non-billable categoryType 2 diabetes mellitus
Official ICD-10-CM descriptor (FY2026)
Type 2 diabetes mellitus
E11 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.
Includes
- diabetes (mellitus) due to insulin secretory defect
- diabetes NOS
- insulin resistant diabetes (mellitus)
Excludes1
Not coded here. An Excludes1 code should never be reported at the same time as the code above it.
- 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
Report an additional code to identify the associated condition.
- 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)
More specific codes under E11
- E11.0Type 2 diabetes mellitus with hyperosmolaritycategory
- E11.1Type 2 diabetes mellitus with ketoacidosiscategory
- E11.2Type 2 diabetes mellitus with kidney complicationscategory
- E11.3Type 2 diabetes mellitus with ophthalmic complicationscategory
- E11.4Type 2 diabetes mellitus with neurological complicationscategory
- E11.5Type 2 diabetes mellitus with circulatory complicationscategory
- E11.6Type 2 diabetes mellitus with other specified complicationscategory
- E11.8Type 2 diabetes mellitus with unspecified complications
- E11.9Type 2 diabetes mellitus without complications
- E11.AType 2 diabetes mellitus without complications in remission
Where this code sits
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ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.