Oth secondary chronic gout, left ankle and foot, with tophus

This code signifies a diagnosis of chronic gout that has developed secondary to another underlying condition, specifically affecting the left ankle and/or foot. The presence of tophi, which are deposits of uric acid crystals, is a key characteristic of this particular manifestation. This indicates a long-standing and often more severe form of gout.

Utilize this code when documentation clearly states chronic secondary gout involving the left ankle and/or foot, and explicitly mentions the presence of tophi. This typically applies to patients with a history of gout who present with chronic symptoms and visible or palpable uric acid deposits in the specified anatomical location. Supporting documentation should include physician notes detailing the chronicity, secondary nature, affected joint, and tophaceous findings.

• Ensure documentation specifies "chronic" and "secondary" gout, as well as the laterality and presence of tophi.
• Distinguish from acute gout or gout without tophi, which would require different codes.
• Always sequence the underlying condition causing the secondary gout first, if known and documented.