Bent bone of right ulna, subs for opn fx type I/2 w malunion

This code signifies a healed, but improperly aligned, fracture of the right ulna that was initially an open fracture (skin broken) of either Type I or Type II severity. The "bent bone" indicates a deformity resulting from the malunion. This code is used during follow-up care after the initial treatment phase.

Apply this code when documenting ongoing management or evaluation of a patient whose right ulnar fracture, originally an open Type I or II injury, has healed with a noticeable angular or rotational deformity. This would be used in subsequent encounters after the initial treatment of the fracture and its immediate complications.

• Ensure documentation clearly states "malunion" and specifies the right ulna.
• Verify the original fracture was an open Type I or II, as this impacts the seventh character.
• This code is for follow-up care; do not use for initial fracture treatment.