Chronic gout due to renal impairment, left ank/ft, w toph

This code signifies a chronic inflammatory arthritis affecting the left ankle and foot, specifically caused by elevated uric acid levels due to impaired kidney function. The presence of tophi, which are subcutaneous deposits of uric acid crystals, further characterizes this condition.

Apply this code when documentation clearly indicates chronic gout in the left ankle and foot, with a direct causal link to renal impairment. The medical record must also specify the presence of tophaceous deposits in the affected area.

• Ensure documentation explicitly links the gout to renal impairment; otherwise, a different etiology code may be more appropriate.
• Verify the laterality (left ankle and foot) and the presence of tophi are clearly stated in the physician's notes.
• Do not use this code for acute gout flares or gout without documented tophi or renal impairment.