ICD-10-CM > M00-M99 > M05-M14 > M12 > M12.2 > M12.23 M12.23 Villonodular synovitis (pigmented), wrist Non-Billable/Non-Specific Codes M12.231Villonodular synovitis (pigmented), right wristM12.232Villonodular synovitis (pigmented), left wristM12.239Villonodular synovitis (pigmented), unspecified wrist