Idiopathic chronic gout, unspecified hip, with tophus

This code signifies a chronic, primary form of gout where the underlying cause is unknown, affecting an unspecified hip joint. A key feature is the presence of tophi, which are deposits of uric acid crystals that form visible lumps under the skin or in other tissues. This condition is characterized by persistent inflammation and joint damage due to these crystal deposits.

Use this code when documentation clearly indicates a diagnosis of idiopathic chronic gout involving the hip, and specifically mentions the presence of tophi. This code is appropriate when the laterality of the affected hip is not specified in the medical record. Supporting documentation would include physician notes detailing chronic gout, hip involvement, and the observation or diagnosis of tophaceous deposits.

• Ensure documentation specifies "idiopathic" and "chronic" gout, as well as the presence of tophi.
• If the laterality of the hip is known (left or right), a more specific code should be used.
• Do not use this code for acute gout or gout due to a secondary cause.