Nondisp commnt fx shaft of ulna, l arm, 7thM

This code describes a left arm injury involving a comminuted fracture of the ulna shaft that is not displaced. The fracture was initially an open fracture of Type I or II, and the current encounter addresses a nonunion, meaning the bone has failed to heal properly.

This code is used for follow-up encounters where a patient with a previously treated open comminuted ulna shaft fracture (left arm, non-displaced, Type I or II) is being managed for nonunion. This would include situations where surgical intervention or other treatments are being performed to address the failed healing.

• Ensure documentation specifies "left arm" and "ulna shaft" to differentiate from other forearm bones or locations.
• Confirm the original fracture was an "open fracture type I or II" and that the current issue is "nonunion."
• This "M" seventh character indicates a subsequent encounter for an open fracture with nonunion; do not use for initial treatment or routine healing.