Stress fracture, unsp hand, subs for fx w malunion

This code signifies a stress fracture located in an unspecified bone of the hand that is currently undergoing treatment for a malunion. A malunion indicates that the fracture has healed, but in an unsatisfactory or deformed position. This code is used during follow-up care for the malunion.

Apply this code when a patient presents for ongoing management of a stress fracture in the hand that has healed incorrectly. Documentation should clearly state "malunion" and indicate that the encounter is for subsequent care related to this specific fracture. This code is appropriate for visits addressing the complications or treatment of the malunion itself.

• Ensure documentation specifies "malunion" and "subsequent encounter" for accurate code assignment.
• Do not use this code for initial treatment of the stress fracture or for nonunion; separate codes exist for those scenarios.
• Always code the underlying cause of the stress fracture if known and documented (e.g., overuse, osteoporosis).