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

This code signifies a fracture of the shaft of the left ulna that is not healing properly, specifically when the patient is presenting for follow-up care. "Nonunion" indicates that the bone ends have failed to unite after a significant period, and the fracture is closed, meaning the skin remains intact.

This code is appropriate for documenting subsequent encounters for a patient with a previously diagnosed closed fracture of the left ulnar shaft that has been determined to be in a state of nonunion. This includes follow-up appointments for monitoring, evaluation of treatment effectiveness, or planning further interventions for the nonunion.

• Always confirm the laterality (left) and the specific bone (ulna shaft) are accurately documented.
• Ensure documentation clearly states "nonunion" and that the fracture is "closed" for appropriate code assignment.
• Verify that the encounter is indeed "subsequent" and not the initial treatment for the fracture.