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

This code describes a situation where a patient has a segmental fracture of the ulna shaft that was initially an open fracture (Type IIIA, IIIB, or IIIC) and is now being treated for malunion. The fracture is nondisplaced, meaning the bone fragments are still in their normal anatomical alignment despite the malunion. The specific arm (left or right) is not documented.

Use this code when a patient presents for follow-up care or treatment of a malunion resulting from a previously treated open segmental ulna shaft fracture. This applies when the original open fracture was severe (Type IIIA, IIIB, or IIIC) and the current fracture fragments are nondisplaced. This code is appropriate for subsequent encounters after the initial treatment of the fracture.

• Ensure documentation clearly specifies "subsequent encounter" and "malunion" for an open fracture type IIIA, IIIB, or IIIC.
• Verify the fracture is of the ulna shaft and is segmental and nondisplaced.
• Do not use if the laterality (left or right arm) is documented; a more specific code would be required.