Idiopathic gout, unspecified site

This code signifies a form of arthritis characterized by the deposition of uric acid crystals in joints, leading to acute inflammatory attacks, where the specific joint affected is not documented. It indicates that the underlying cause of the hyperuricemia and gout is unknown or primary.

Apply this code when documentation confirms a diagnosis of idiopathic gout but does not specify the anatomical location of the gouty arthritis. This is appropriate when the provider has not identified a secondary cause for the hyperuricemia.

• Do not use this code if the specific joint affected by gout is documented; instead, use a more specific code from the M10.0- subcategory.
• Ensure documentation clearly states "idiopathic" or "primary" gout.
• Consider sequencing this code after any codes for acute gouty arthritis if both are present and documented.