Displ transverse fx shaft of unsp ulna, 7thR

This code describes a situation where a patient has a previously treated, but now poorly healed (malunion), transverse fracture of the shaft of an unspecified ulna. The original injury was an open fracture, classified as Type IIIA, IIIB, or IIIC, indicating significant soft tissue damage and contamination.

This code is used when documenting a patient presenting for follow-up care or management of a malunion of a transverse ulnar shaft fracture. The original injury must have been an open fracture of Gustilo-Anderson Type IIIA, IIIB, or IIIC, and the current encounter addresses the complications of the improper healing.

• Ensure documentation clearly specifies "malunion" and the original fracture type (IIIA, IIIB, or IIIC open fracture).
• Verify the encounter is for subsequent care related to the malunion, not the initial treatment of the fracture.
• Laterality is unspecified in this code; if known, a more specific code should be sought.