Billable / Specific Code
ICD-10-CM E11.21 is the diagnosis code for Type 2 diabetes mellitus with diabetic nephropathy. This code falls under the section "Diabetes mellitus" within Chapter 4 — Endocrine, nutritional and metabolic diseases (E00-E89). It is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
Understanding where E11.21 sits in the ICD-10-CM classification helps ensure proper coding:
Yes, E11.21 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
E11.21 is the ICD-10-CM diagnosis code for "Type 2 diabetes mellitus with diabetic nephropathy". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of E11.21 is E11.2 ("Type 2 diabetes mellitus with kidney complications"). E11.21 provides a more specific classification within this category.
E11.21 is located in Section E08-E13 — "Diabetes mellitus" within Chapter 4 of the ICD-10-CM Tabular List.
Use E11.21 when the patients documented diagnosis matches "Type 2 diabetes mellitus with diabetic nephropathy" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Type 2 diabetes mellitus with diabetic nephropathy is E11.21.
Yes, E11.21 can be used as a primary diagnosis code since it is billable and specific.
E11.21 is in Chapter 4 of the ICD-10-CM Tabular List.
Yes, E11.21 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.