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

This code signifies a chronic, primary form of gout affecting the right hand, characterized by the presence of tophi. Tophi are deposits of uric acid crystals that form visible lumps under the skin or in joints, indicating long-standing and often severe hyperuricemia.

Apply this code when documentation explicitly states idiopathic chronic gout with tophaceous deposits in the right hand. This typically applies to patients with a confirmed diagnosis of chronic gout who have developed visible or palpable tophi in this specific anatomical location.

• Ensure documentation specifies "idiopathic" or "primary" chronic gout to differentiate from secondary forms.
• Verify the laterality (right hand) and the presence of tophi are clearly stated in the physician's notes.
• Do not use this code for acute gout flares or chronic gout without tophi, even if affecting the right hand.