Sprain of medial collateral ligament of unsp knee, init

This code signifies a tear or overstretching injury to the medial collateral ligament (MCL) on the inner side of the knee joint. The injury is to an unspecified knee, meaning the laterality (left or right) is not documented. This code is used for the initial phase of treatment for this injury.

Use this code when documentation confirms an MCL sprain without specifying which knee is affected, and the patient is receiving active treatment for the injury. This includes initial evaluation, surgical repair, or conservative management.

• Ensure documentation clearly states "unspecified knee" if laterality is not provided.
• Verify the encounter is the "initial encounter" for this specific injury. Subsequent care would use a different seventh character.
• Look for associated codes for external causes of injury (e.g., W00-Y38) to provide a complete picture.