Greenstick fx shaft of rad, unsp arm, subs for fx w nonunion

This code signifies a greenstick fracture affecting the shaft of the radius bone, where the specific arm (left or right) is not documented. Importantly, it indicates that the fracture has not healed properly and the patient is presenting for follow-up care related to this nonunion.

This code is appropriate for subsequent encounters when a patient with a previously diagnosed greenstick fracture of the radial shaft is being treated for a nonunion. This includes situations where the physician is monitoring the nonunion, planning further interventions, or providing ongoing management.

• Ensure documentation clearly states "nonunion" for the fracture.
• Verify that the encounter is subsequent to the initial fracture treatment.
• If the arm is specified (left or right), a more specific code should be used.