Sprain of lateral collateral ligament of right knee, subs

This code signifies a sprain, or stretching/tearing, of the lateral collateral ligament (LCL) in the right knee. This injury typically results from a varus stress to the knee, pushing the lower leg inward. The "subsequent encounter" indicates the patient is receiving follow-up care for an injury that has already been diagnosed and is undergoing active treatment or healing.

Use this code when documenting ongoing treatment, rehabilitation, or follow-up visits for a patient with a previously diagnosed right knee LCL sprain. This includes scenarios such as physical therapy sessions, re-evaluation appointments, or medication management during the recovery phase. It is not for the initial diagnosis of the injury.

• Ensure documentation clearly states "right knee" and "lateral collateral ligament" to support code specificity.
• Verify the encounter type is "subsequent" and not initial or sequela.
• Always pair with an external cause code (V00-Y99) if the injury was due to an external cause, especially for the initial encounter and often for subsequent ones.