Displ seg fx shaft of ulna, unsp arm, 7thR

This code describes a specific type of ulna fracture where the bone is broken into multiple fragments (segmental) and is out of alignment (displaced). It specifies an open fracture (bone piercing the skin) of types IIIA, IIIB, or IIIC, indicating significant soft tissue damage, and is being treated for a complication of healing where the bone has healed in an incorrect position (malunion). This particular code is for an unspecified arm and is used for subsequent encounters after initial treatment.

Use this code for follow-up visits or ongoing treatment of a patient who previously sustained a severe open segmental ulna shaft fracture (types IIIA, IIIB, or IIIC) that has subsequently healed improperly, resulting in malunion. This applies when the specific arm (left or right) is not documented.

• Ensure documentation clearly specifies a segmental fracture of the ulna shaft with displacement.
• Verify the fracture was initially an open fracture of type IIIA, IIIB, or IIIC and that malunion is the current complication being addressed.
• Confirm this is a subsequent encounter for care related to the malunion, not the initial treatment of the fracture.