In simple words: This code is used when someone has diabetes, but it's not the usual type 1 or type 2, and their kidneys are also not working properly because of the diabetes. It covers less common types of diabetes and signifies that the kidney problems are a direct result of their diabetes.

This code signifies a specific type of diabetes mellitus accompanied by chronic kidney disease.It's used when the specific type of diabetes doesn't fit into the categories of type 1 or type 2 and includes rarer forms like diabetes due to genetic defects, post-pancreatectomy diabetes, or drug-induced diabetes.It's important to note that chronic kidney disease is a progressive loss of kidney function, and in this case, it is considered a diabetic complication.

Example 1: A patient with diabetes due to a genetic defect develops chronic kidney disease as a complication., A patient with drug-induced diabetes subsequently develops chronic kidney disease., A patient who underwent a pancreatectomy develops diabetes and, later, chronic kidney disease.

Documentation should clearly establish the type of diabetes mellitus, its etiology (if known), and evidence of chronic kidney disease. Specific tests like blood glucose levels, HbA1c, creatinine, and eGFR should be documented.Any relationship between the diabetes and kidney disease should be explicitly stated, for example, "chronic kidney disease due to diabetes." Details about the stage of chronic kidney disease are also crucial.