Bent bone of right ulna, subs for clos fx w nonunion

This code signifies a curved or angled deformity of the right ulna bone resulting from a previous fracture that has failed to heal properly. The fracture itself is closed, meaning the skin over the injury remains intact, and the nonunion indicates a lack of bony bridging across the fracture site after a sufficient healing period. This diagnosis is for a patient presenting for follow-up care or treatment of this persistent condition.

Apply this code when documenting a patient's visit for ongoing management, evaluation, or treatment of a previously diagnosed closed fracture of the right ulna that has developed a bent bone deformity and nonunion. This includes scenarios such as surgical planning for corrective osteotomy, follow-up after initial non-operative treatment failure, or assessment of chronic pain related to the unhealed fracture.

• Ensure documentation clearly specifies "right ulna" and "bent bone" in addition to "nonunion" and "closed fracture."
• The "K" seventh character indicates a subsequent encounter, meaning the patient is receiving routine care during the healing or recovery phase.
• Do not use this code for initial treatment of the fracture or for malunion, which implies healing in an unsatisfactory position.