Oth fx low end r ulna, 7thR

This code describes a subsequent encounter for a patient who sustained an open fracture of the lower end of the right ulna, specifically a severe open fracture (Type IIIA, IIIB, or IIIC), which has now healed incorrectly (malunion). The fracture involves the distal portion of the ulna, near the wrist.

This code is appropriate when a patient presents for follow-up care, evaluation, or treatment of a malunion resulting from a previously sustained severe open fracture of the right distal ulna. This includes scenarios where the malunion is being assessed for surgical correction, conservative management, or ongoing rehabilitation.

• Requires a seventh character "R" to indicate a subsequent encounter for malunion.
• Ensure documentation clearly specifies an open fracture type IIIA, IIIB, or IIIC and evidence of malunion.
• Do not use for initial treatment or for nonunion; specific codes exist for those scenarios.