Other sprain of sternum, initial encounter

This diagnosis code indicates a sprain of the sternum, not otherwise specified as a dislocation or fracture, that is occurring for the first time. It signifies damage to the ligaments connecting the sternum to other bones, such as the ribs or clavicles, resulting from trauma or excessive force. The injury is acute and the patient is receiving initial treatment.

Use this code when a patient presents with pain and tenderness localized to the sternum following an injury, and imaging studies (if performed) do not reveal a fracture or dislocation. This applies to scenarios like a direct blow to the chest, a sudden twisting motion, or hyperextension of the trunk that strains the sternal ligaments. It is appropriate for the initial visit where the injury is diagnosed and treatment begins.

• Ensure documentation clearly states "sprain" of the sternum and specifies it as an "initial encounter."
• Differentiate from sternal fractures (S22.2xxA) or dislocations (S23.1xxA) based on clinical findings and imaging.
• Do not use for chronic sternal pain without an acute sprain event.