Pathological fracture, right ulna, subs for fx w nonunion

This code signifies a pathological fracture of the right ulna that has failed to heal properly, indicating a nonunion. A pathological fracture occurs due to a disease process weakening the bone, rather than from trauma. The "subsequent encounter" designation indicates the patient is receiving routine care during the healing phase of the nonunion.

Use this code when a patient presents for follow-up treatment, monitoring, or management of a right ulnar pathological fracture that has been diagnosed as a nonunion. Documentation should clearly state the pathological nature of the fracture, its location (right ulna), and the presence of nonunion, along with the encounter being for ongoing care.

• Always sequence the underlying disease causing the pathological fracture first, followed by this fracture code.
• Distinguish carefully between nonunion (failure to heal) and malunion (healing in an incorrect position).
• Ensure documentation specifies "right ulna" and "pathological fracture" to support this specific code.