M12.2 - Villonodular synovitis (pigmented)
M12.27 - Villonodular synovitis (pigmented), ankle and foot
M12.271 - Villonodular synovitis (pigmented), right ankle and foot
M12.272 - Villonodular synovitis (pigmented), left ankle and foot
M12.279 - Villonodular synovitis (pigmented), unspecified ankle and foot