Sprain of posterior cruciate ligament of unsp knee, init

This code signifies a tear or overstretching of the posterior cruciate ligament (PCL) in an unspecified knee. The PCL is a major stabilizing ligament located at the back of the knee joint, connecting the femur to the tibia. Injury typically results from a direct blow to the front of the knee while it is bent, or from hyperextension.

Apply this code when documentation confirms a PCL sprain without specifying whether it's the right or left knee. This is appropriate for the initial evaluation and treatment of the injury. Common scenarios include motor vehicle accidents where the knee strikes the dashboard, or sports injuries involving a fall onto a flexed knee.

• Ensure the medical record clearly states "unspecified knee" if laterality is not documented.
• This code is for the initial encounter for this specific injury. Subsequent care will require a different seventh character.
• Differentiate from anterior cruciate ligament (ACL) injuries, which have distinct codes.