E11.22

HCC Category Mapping

What This Code Means

Type 2 diabetes with chronic kidney disease, meaning the kidneys have long-term damage from diabetes and are not functioning properly.

Coding Tips

• •Use this code when chronic kidney disease is documented as related to diabetes
• •If the specific stage of CKD is documented (stages 1-5), add the appropriate CKD code (N18.1-N18.6) for more specificity

Clinical Significance

Type 2 diabetes mellitus with diabetic chronic kidney disease captures the progressive renal impairment that develops from sustained hyperglycemic damage to the renal microvasculature. This code is distinct from nephropathy in that it explicitly documents the chronic kidney disease classification, indicating established and ongoing renal function decline. These patients face increased cardiovascular risk, medication dosing challenges, and potential need for renal replacement therapy.

Documentation Requirements

• ✓The provider must document chronic kidney disease as a complication of Type 2 diabetes.
• ✓The CKD stage (1 through 5) should be specified with an additional N18 code.
• ✓Documentation should include estimated glomerular filtration rate, urinary protein quantification, and renal management plan.
• ✓The causal relationship between diabetes and the chronic kidney disease must be explicitly stated or clearly implied.

Commonly Confused Codes