Villonodular synovitis (pigmented), left hand

This code represents pigmented villonodular synovitis (PVNS) affecting the left hand. PVNS is a rare, benign, proliferative disorder of the synovial membrane, characterized by villous and nodular growth with hemosiderin deposition, leading to joint pain, swelling, and limited range of motion.

Use this code when documentation confirms a diagnosis of pigmented villonodular synovitis specifically located in the left hand. Supporting documentation should include imaging reports (e.g., MRI showing synovial proliferation and hemosiderin) and/or pathology reports from synovial biopsy confirming PVNS.

• Ensure laterality is clearly documented as "left hand" to support this specific code.
• Do not confuse with other forms of synovitis (e.g., infectious, inflammatory) unless PVNS is explicitly diagnosed.
• Consider additional codes for associated symptoms (e.g., pain, swelling) if documented and not inherent to the PVNS diagnosis.