Nondisp fx of unsp ulna styloid pro, 7thN

This code signifies a non-displaced fracture of the ulna's styloid process that has not healed as expected (nonunion). It specifically applies to a subsequent encounter where the initial injury was an open fracture classified as Type IIIA, IIIB, or IIIC, indicating significant soft tissue damage and contamination.

This code is used when a patient presents for follow-up care, such as cast changes, wound care, or surgical planning, for a previously diagnosed non-displaced ulna styloid fracture that has failed to unite. The original injury must have been an open fracture of a severe type (IIIA, IIIB, or IIIC). It would be appropriate for documenting ongoing management of the nonunion.

• Ensure documentation clearly states "nonunion" and specifies the original injury was an open fracture type IIIA, IIIB, or IIIC.
• Verify the fracture is explicitly documented as "nondisplaced."
• This code is for subsequent encounters; an initial encounter code would be used for the acute injury.