Idiopathic chronic gout, right elbow, with tophus (tophi)

This code signifies a chronic form of gout where the underlying cause is unknown (idiopathic), specifically affecting the right elbow. The presence of a tophus (or tophi) indicates the deposition of urate crystals, forming visible or palpable nodules in the joint or surrounding soft tissues. This condition is characterized by persistent inflammation and potential joint damage.

Use this code when documentation clearly states a diagnosis of idiopathic chronic gout localized to the right elbow, and specifically mentions the presence of tophi. This applies to patients experiencing ongoing symptoms, joint deformity, or functional impairment due to chronic urate crystal deposition in this specific joint. Supporting documentation should include physician notes detailing the diagnosis, location, chronicity, and presence of tophi.

• Ensure documentation explicitly states "idiopathic" and "chronic" to differentiate from acute or secondary gout.
• Verify the laterality (right elbow) and the presence of tophi are clearly documented.
• Do not use this code for acute gout flares, gout due to a known cause (e.g., drug-induced), or gout without tophi.