Unsp fx lower end of left ulna, subs for clos fx w malunion

This code signifies a follow-up visit for a patient who previously sustained an unspecified fracture of the lower end of their left ulna. The fracture is closed, meaning the skin was not broken, and has healed in an imperfect or misaligned position (malunion).

This code is appropriate for subsequent encounters where a patient is being treated for complications or ongoing management related to a malunited closed fracture of the distal left ulna. This could include physical therapy, pain management, or evaluation for corrective surgery.

• Ensure documentation clearly specifies "left ulna" and "lower end" to support this specific site.
• Verify the encounter is for a subsequent visit and not the initial treatment of the fracture.
• Confirm the presence of malunion as documented by the provider.