Sprain of medial collateral ligament of unsp knee, sequela

This code signifies a chronic or residual sprain affecting the medial collateral ligament (MCL) of an unspecified knee. It indicates that the initial injury has resolved, but the patient continues to experience persistent symptoms or complications directly related to that past sprain.

Apply this code when documenting follow-up care for a patient with ongoing pain, instability, or functional limitation in the knee due to a previously diagnosed MCL sprain. This is appropriate for conditions like chronic ligamentous laxity or post-traumatic arthritis stemming from the original injury.

• Ensure documentation clearly links current symptoms to a past MCL sprain.
• Do not use for acute MCL sprains; those require codes from the initial encounter.
• Specify laterality (left or right) if known, as this code is for an unspecified knee.