Nondisp seg fx shaft of ulna, l arm, 7thN

This code signifies a segmental fracture of the ulna shaft in the left arm that is not displaced and has progressed to a nonunion. It specifically applies to cases where the initial injury was an open fracture of type IIIA, IIIB, or IIIC, indicating significant soft tissue damage and contamination. The "subsequent encounter" designation means this code is used for follow-up care after the initial treatment of the fracture.

This code is appropriate for documenting ongoing management of a left ulna shaft segmental fracture that has failed to heal (nonunion) and was initially an open fracture. It would be used during clinic visits, follow-up imaging, or surgical interventions aimed at addressing the nonunion. This code is selected when the patient is no longer in the acute phase of injury but is receiving treatment for the complication of nonunion.

• Ensure documentation clearly specifies "nonunion" and the "subsequent encounter" status.
• Verify the original injury was an open fracture of type IIIA, IIIB, or IIIC.
• Confirm the fracture is of the ulna shaft, left arm, and is segmental and nondisplaced.