ICD-10-CM > M00-M99 > M20-M25 > M23 > M23.6 > M23.60 M23.60 Other spontaneous disruption of unspecified ligament of knee Non-Billable/Non-Specific Codes M23.601Other spontaneous disruption of unspecified ligament of right kneeM23.602Other spontaneous disruption of unspecified ligament of left kneeM23.609Other spontaneous disruption of unspecified ligament of unspecified knee