E11.9 Type 2 diabetes mellitus without complications

The ICD-10-CM code for Type 2 diabetes mellitus without complications is E11.9 (FY2026). It is a billable, claim-ready diagnosis code.

Choosing between codes? See the guide: ICD-10 code for type 2 diabetes.

Classification

Chapter

4: Endocrine, nutritional and metabolic diseases (E00-E89)

Section

E08-E13: Diabetes mellitus (E08-E13)

Category E11

65 codes (48 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to E11.9:

• Diabetes, diabetic (mellitus) (sugar)
• Diabetes, diabetic (mellitus) (sugar) › type 2

U.S. Hospital Utilization

• An estimated 2,428,460 U.S. inpatient stays in 2023 included E11.9 among the documented diagnoses.
• 575 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Prevalence & Statistics

• More than 40 million Americans (about 1 in 8) have diabetes, and about 90% to 95% of them have type 2 diabetes, according to the CDC. (CDC — Type 2 Diabetes (About Diabetes), 2023)

Official Coding Guidelines

Use of insulin/oral/injectable drugs when type not indicated

3) Diabetes mellitus and the use of insulin, oral hypoglycemics, and injectable non-insulin drugs If the documentation in a medical record does not indicate the type of diabetes but does indicate that the patient uses insulin, code E11-, Type 2 diabetes mellitus, should be assigned. Additional code(s) should be assigned from category Z79 to identify the long-term (current) use of insulin, oral hypoglycemic drugs, or injectable non-insulin antidiabetic, as follows:

Diabetes mellitus (TOC entry)

a. Diabetes mellitus ................................................................................................................... 39

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)
• CDC — Type 2 Diabetes (About Diabetes) (2023)

Cite This Page

Reference E11.9 with the canonical source and edition:

E11.9 — Type 2 diabetes mellitus without complications. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/E11.9

Canonical URL: https://icd10codingpro.com/codes/E11.9