Greenstick fx shaft of humer, r arm, subs for fx w nonunion

This code signifies a greenstick fracture affecting the shaft of the right humerus that has failed to unite properly after initial treatment. A greenstick fracture is an incomplete fracture where the bone bends and cracks but does not break all the way through, common in children. Nonunion indicates a failure of the bone ends to heal together within the expected timeframe.

Apply this code for follow-up encounters where a patient presents with a previously diagnosed right humeral shaft greenstick fracture that is now confirmed to be experiencing nonunion. This would typically involve ongoing management, assessment of healing progress, or planning for further intervention due to the lack of bone consolidation.

• Ensure documentation clearly specifies "greenstick" fracture type and "nonunion" status for the right humeral shaft.
• Verify laterality (right arm) is explicitly stated in the medical record.
• This code is for subsequent encounters; an initial encounter for the fracture would use a different seventh character.