Stress fracture, right hand, subs for fx w malunion

This code signifies a stress fracture in the right hand that has previously been treated but is now healing improperly, resulting in a malunion. A stress fracture is a tiny crack in a bone caused by repetitive stress rather than a single traumatic event. Malunion indicates that the bone has healed in an abnormal position, which can lead to pain and functional impairment.

Apply this code when documentation clearly states a stress fracture of the right hand is undergoing subsequent treatment for a malunion. This is typically used for follow-up visits where the physician is managing the complications of the previous fracture healing. Documentation should specify "malunion" and "stress fracture" of the right hand.

• Ensure the documentation explicitly states "malunion" and not just "nonunion" or "delayed union," as these have different codes.
• Verify the laterality (right hand) is clearly documented.
• This code requires an additional code for any associated external cause if applicable, though it's less common with stress fractures.