Idiopathic chronic gout, unspecified elbow, with tophus

This code signifies a chronic, primary form of gout affecting an unspecified elbow joint, characterized by the presence of tophi. Tophi are deposits of uric acid crystals that form visible lumps under the skin or in other tissues, indicating advanced or poorly controlled gout.

Use this code when documentation specifies idiopathic chronic gout involving an elbow, and explicitly mentions the presence of tophaceous deposits, without specifying laterality. This code is appropriate when the provider has not indicated whether the right or left elbow is affected.

• Ensure documentation clearly states "idiopathic chronic gout" and "tophus" (or "tophi") at the elbow.
• Do not use this code if the laterality of the elbow is specified; instead, select the appropriate M1A.021- or M1A.022- code.
• Distinguish from acute gout (M10.-) or gout due to other causes (M1A.1-).