Other secondary gout, right knee

This code signifies gout that has developed as a consequence of another underlying medical condition or medication, specifically affecting the right knee. It indicates the presence of urate crystal deposition and associated inflammatory arthritis in the knee joint, where the gout is not primary (idiopathic).

Apply this code when documentation clearly states "secondary gout" affecting the right knee, and an underlying cause such as chronic kidney disease, myeloproliferative disorders, or diuretic use is identified. Ensure the medical record specifies the laterality (right knee) and the secondary nature of the gout.

• Always code the underlying condition causing the secondary gout first.
• Distinguish from primary gout (M10.0-) and gout due to renal impairment (M10.3-).
• Verify documentation explicitly states "secondary" and the specific joint involved.