Idiopathic gout, unspecified shoulder

This code signifies a diagnosis of gout where the underlying cause is unknown (idiopathic) and the specific joint affected is the shoulder, without further specification of laterality. Gout is a form of inflammatory arthritis characterized by recurrent attacks of acute arthritis due to the deposition of uric acid crystals in joints.

Use this code when the provider's documentation clearly states a diagnosis of idiopathic gout affecting the shoulder, and no laterality (right or left) is specified. This diagnosis is typically made based on clinical presentation, elevated serum uric acid levels, and sometimes joint fluid analysis confirming urate crystals.

• Ensure documentation explicitly states "idiopathic" if the cause is unknown; otherwise, consider codes for secondary gout.
• Avoid using this code if laterality (right or left shoulder) is documented; instead, select the more specific M10.011 or M10.012.
• Always sequence this code as a primary diagnosis when it is the reason for the encounter, or as a secondary diagnosis if it's a co-morbidity impacting care.