E11.31 Type 2 diabetes mellitus with unspecified diabetic retinopathy

The ICD-10-CM code for Type 2 diabetes mellitus with unspecified diabetic retinopathy is E11.31 (FY2026). It is a non-billable category code — select a more specific code below for claims.

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

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