Gout due to renal impairment, unspecified site

This code signifies a form of gout where the accumulation of uric acid crystals in joints is directly attributable to impaired kidney function. The renal impairment hinders the kidneys' ability to excrete uric acid, leading to hyperuricemia and subsequent gout attacks. The "unspecified site" indicates that the specific joint affected by the gout is not documented.

Apply this code when documentation explicitly links a patient's gout to underlying renal impairment, and the affected joint is not specified. This typically occurs in patients with chronic kidney disease (CKD) or acute kidney injury who present with gout symptoms without a clear localization. Supporting documentation should include physician notes detailing both the gout and the renal dysfunction, with a stated or implied causal relationship.

• Always sequence the underlying renal impairment code (e.g., N18.-, N17.-) before this gout code.
• Avoid using this code if the specific joint affected by gout is documented; instead, use a more specific M10.3- code.
• Differentiate from primary gout (M10.0-) or drug-induced gout (M10.2-) by ensuring the documentation clearly attributes the gout to renal dysfunction.