Diabetes due to undrl cond w diabetic chronic kidney disease

This code signifies diabetes that arises as a direct consequence of another underlying disease or condition, specifically when the patient also presents with chronic kidney disease (CKD) due to this diabetes. It indicates a secondary form of diabetes where the primary etiology is not type 1 or type 2 diabetes, but rather another medical problem.

Apply this code when documentation clearly states diabetes mellitus caused by an underlying condition (e.g., cystic fibrosis, pancreatitis, hemochromatosis, genetic defects) and specifies that the patient has diabetic chronic kidney disease. The medical record must explicitly link the diabetes to the underlying condition and the CKD to the diabetes.

• Always sequence the underlying condition first, followed by this diabetes code.
• Do not use this code for Type 1 or Type 2 diabetes with CKD; those have specific codes.
• Ensure documentation specifies the type of chronic kidney disease (e.g., stage 3, 4, 5, or ESRD) by adding a secondary code from category N18.