Villonodular synovitis (pigmented), left hip

This code represents a benign, proliferative condition affecting the synovial lining of the left hip joint, characterized by the growth of villi and nodules. These growths often contain hemosiderin, giving them a pigmented appearance. It can lead to joint pain, swelling, and restricted range of motion.

Use this code when documentation confirms a diagnosis of pigmented villonodular synovitis specifically affecting the left hip joint. This diagnosis is typically made based on clinical presentation, imaging studies (MRI often shows characteristic findings), and confirmed by histopathological examination of synovial tissue.

• Ensure the documentation clearly specifies the left hip as the affected joint.
• Differentiate from other forms of synovitis or arthropathy affecting the hip.
• Consider co-reporting codes for associated symptoms like pain (e.g., M25.552) if documented and treated.