E11.21 – Type 2 diabetes mellitus with diabetic nephropathy

ICD-10-CM 2027 diagnosis code · Diabetes mellitus

Billable code

ICD-10-CM code E11.21
Code
E11.21 (claims format: E1121)
Description
Type 2 diabetes mellitus with diabetic nephropathy
Billable
Yes – valid for HIPAA-covered transactions
Valid for
Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter
4. Endocrine, nutritional and metabolic diseases (E00-E89)
Block
E08-E13 Diabetes mellitus
Parent codes
E11 › E11.2

Notes for E11.21

Applicable to:
  • Type 2 diabetes mellitus with intercapillary glomerulosclerosis
  • Type 2 diabetes mellitus with intracapillary glomerulonephrosis
  • Type 2 diabetes mellitus with Kimmelstiel-Wilson disease

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

E11 – Type 2 diabetes mellitus

Includes:
  • diabetes (mellitus) due to insulin secretory defect
  • diabetes NOS
  • insulin resistant diabetes (mellitus)
Excludes1 (not coded here):
  • 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)

Index terms for E11.21

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in E11.2

Frequently asked questions

What is ICD-10 code E11.21?

E11.21 is the ICD-10-CM code for type 2 diabetes mellitus with diabetic nephropathy, in the block E08-E13 (Diabetes mellitus).

Is E11.21 a billable code?

Yes. E11.21 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does E11.21 belong to?

It belongs to category E11 – Type 2 diabetes mellitus.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.