Displ seg fx shaft of humer, l arm, subs for fx w malunion

This code describes a left humerus shaft fracture that has broken into multiple pieces (segmental) and is no longer in its proper anatomical alignment (displaced). The "subsequent encounter" indicates the patient is receiving follow-up care for this fracture, and "malunion" signifies that the fracture has healed, but in an unsatisfactory position or alignment.

This code is appropriate for encounters where a patient is being treated for a previously sustained, displaced, segmental fracture of the left humeral shaft that has healed incorrectly. This could include visits for evaluation of the malunion, planning for corrective surgery, or managing complications arising from the malunion.

• Ensure documentation clearly specifies "left arm" and "segmental" fracture type.
• Verify the encounter is for follow-up care of a healed fracture with malunion, not an acute fracture or nonunion.
• Always review the patient's history to confirm the initial injury and subsequent healing status.