ICD-10-CM > M00-M99 > M65-M67 > M66 > M66.1 > M66.13 M66.13 Rupture of synovium, wrist Non-Billable/Non-Specific Codes M66.131Rupture of synovium, right wristM66.132Rupture of synovium, left wristM66.139Rupture of synovium, unspecified wrist