Nondisp commnt fx shaft of ulna, r arm, 7thN

This code describes a right ulna shaft fracture that is broken into multiple pieces (comminuted) but remains in its natural alignment (nondisplaced). This specific instance involves an open fracture (where the bone broke through the skin) that is now failing to heal properly (nonunion) during a follow-up visit.

Apply this code for patients presenting with a previously diagnosed right ulna shaft fracture that was initially an open fracture (Type IIIA, IIIB, or IIIC) and is now demonstrating nonunion. This code is appropriate for subsequent encounters where the nonunion is being managed.

• Ensure documentation clearly specifies "nondisplaced" and "comminuted" for the ulna shaft fracture.
• Verify the initial injury was an open fracture classified as Type IIIA, IIIB, or IIIC.
• This code is for subsequent encounters; use the appropriate initial encounter code for the initial diagnosis.