Stress fracture, right hand, subs for fx w nonunion

This code signifies a stress fracture located in the right hand that has failed to heal properly after initial treatment. Nonunion indicates that the bone ends have not joined together, requiring further intervention. This represents a complication of a previously managed stress fracture.

Apply this code when a patient presents with ongoing symptoms related to a right hand stress fracture that has been previously treated, and imaging or clinical assessment confirms nonunion. Documentation should clearly state "nonunion" and specify the right hand as the affected site following a stress fracture.

• Always confirm laterality (right hand) and the specific type of fracture (stress fracture).
• Ensure documentation explicitly states "nonunion" for the subsequent encounter.
• Do not confuse with malunion (M84.4-) or other types of nonunion fractures in different anatomical sites.