Villonodular synovitis (pigmented), right elbow

This code describes pigmented villonodular synovitis (PVNS) affecting the right elbow. PVNS is a rare, benign proliferative disorder of the synovial membrane, characterized by villous and nodular growth with hemosiderin deposition, leading to pain, swelling, and restricted joint movement.

Apply this code when documentation clearly indicates a diagnosis of pigmented villonodular synovitis specifically located in the right elbow joint. Supporting documentation would include pathology reports confirming PVNS, imaging studies (MRI) showing characteristic findings, and physician notes detailing the diagnosis and affected joint.

• Ensure laterality is precisely documented; this code is specific to the right elbow.
• Distinguish from other forms of synovitis or arthropathy; PVNS has distinct pathological features.
• Confirm the "pigmented" aspect of the diagnosis, as non-pigmented villonodular synovitis would be coded differently.