Chronic kidney disease, unspecified

This code signifies a long-term, progressive loss of kidney function where the specific stage or underlying cause has not been documented or determined. It indicates a persistent impairment in the kidneys' ability to filter waste products from the blood.

Apply this code when documentation confirms chronic kidney disease but lacks specificity regarding the stage (e.g., CKD Stage 1-5) or the etiology. This is appropriate when the provider has diagnosed CKD but further diagnostic workup or staging is pending or not yet available.

• Avoid using this code if a more specific stage of CKD (N18.1-N18.5) is documented.
• Always sequence this code after any underlying cause of CKD, if known and documented (e.g., diabetes, hypertension).
• Query the provider for a more specific stage of CKD whenever possible to improve coding accuracy and data specificity.