Unsp fx shaft of left ulna, subs for clos fx w nonunion

This code signifies a fracture of the main part (shaft) of the left ulna where the specific type of fracture is not documented. It indicates that the patient is returning for follow-up care for this fracture, which was initially treated without an open surgical incision, and the bone has failed to heal properly.

This code is appropriate for documenting subsequent encounters for a left ulnar shaft fracture that was initially closed, but has since developed nonunion. This would include follow-up appointments where the physician is monitoring the nonunion, discussing further treatment options, or managing complications related to the delayed healing.

• Ensure documentation clearly states "left ulna," "shaft," "closed fracture," and "nonunion" for accurate code assignment.
• Verify that this is a subsequent encounter, not the initial treatment for the fracture.
• Do not use this code if the fracture type (e.g., transverse, oblique) is specified; a more specific code would be required.