Oth spon disruption of lateral collat ligament of unsp knee

This diagnosis code signifies a non-traumatic tear or rupture of the lateral collateral ligament (LCL) in a knee, where the specific knee (left or right) is not documented. It indicates a spontaneous disruption of the LCL, meaning it occurred without an external force or injury.

Use this code when documentation clearly states a spontaneous disruption of the lateral collateral ligament, and the laterality of the affected knee is not specified. This typically applies to cases where the patient presents with symptoms consistent with an LCL tear, but no acute traumatic event is reported.

• Ensure documentation explicitly states "spontaneous disruption" and not a traumatic injury.
• If laterality (left or right knee) is documented, use the more specific code (M23.641 or M23.642).
• Do not use this code for LCL sprains or strains; those fall under different code categories.