ICD-10-CM > M00-M99 > M05-M14 > M12 > M12.2 > M12.27 M12.27 Villonodular synovitis (pigmented), ankle and foot Non-Billable/Non-Specific Codes M12.271Villonodular synovitis (pigmented), right ankle and footM12.272Villonodular synovitis (pigmented), left ankle and footM12.279Villonodular synovitis (pigmented), unspecified ankle and foot