M23.63 - Other spontaneous disruption of medial collateral ligament of knee M23.6 - Other spontaneous disruption of ligament(s) of knee M23.63 - Other spontaneous disruption of medial collateral ligament of knee
M23.631 - Other spontaneous disruption of medial collateral ligament of right knee M23.632 - Other spontaneous disruption of medial collateral ligament of left knee M23.639 - Other spontaneous disruption of medial collateral ligament of unspecified knee