Ulnar collateral ligament sprain

This code signifies a sprain of the ulnar collateral ligament (UCL) in the elbow, often referred to as "Tommy John injury." It involves stretching or tearing of the ligament that connects the ulna to the humerus, providing stability to the medial aspect of the elbow joint. The severity can range from a mild stretch to a complete rupture.

Use this code for diagnoses of acute or chronic sprains of the elbow's ulnar collateral ligament. Documentation should clearly indicate a sprain, tear, or rupture of the UCL, often supported by physical examination findings, imaging (e.g., MRI), and a history of trauma or repetitive overhead activity.

• Differentiate between a sprain (this code) and a strain of muscle/tendon, which would fall under a different code category.
• Ensure documentation specifies the ulnar collateral ligament to avoid confusion with radial collateral ligament injuries.
• Consider laterality if specified in the documentation, though ICD-9-CM for this code does not offer laterality distinctions.