Transient synovitis, right hip

This code signifies a self-limiting inflammatory condition affecting the synovial membrane of the right hip joint, typically characterized by acute onset of hip pain and limping. It is a common cause of hip pain in children, often following a viral illness or minor trauma, and resolves spontaneously without long-term sequelae.

Apply this code for patients presenting with acute, non-traumatic right hip pain and limping, where imaging (e.g., ultrasound) may show joint effusion, and other more serious conditions like septic arthritis or Legg-Calvé-Perthes disease have been ruled out. Documentation should clearly state "transient synovitis" and specify the right hip.

• Ensure laterality is accurately documented and coded; this code is specific to the right hip.
• Distinguish from other forms of synovitis (e.g., M65.8x for other specified synovitis) which may have different etiologies or chronicity.
• Do not use this code if a specific infectious agent or systemic inflammatory condition is identified as the cause of the synovitis.