Gout due to renal impairment, right knee

This code signifies a form of gout affecting the right knee that is directly caused by compromised kidney function. Renal impairment leads to an accumulation of uric acid, which then crystallizes in joints, triggering an inflammatory response characteristic of gout.

Apply this code when documentation clearly links the patient's right knee gout to an underlying renal impairment. This typically involves a diagnosis of gout in the right knee and a co-existing diagnosis of chronic kidney disease (CKD) or acute kidney injury (AKI) explicitly stated as the cause of the gout.

• Ensure the documentation specifies "right knee" and explicitly states "due to renal impairment."
• Always code the underlying renal impairment first, as it is the etiology of the gout.
• Distinguish from other forms of gout (e.g., idiopathic, lead-induced) where renal impairment is not the direct cause.