Unsp physl fx upper end unsp femur, subs for fx w nonunion

This code signifies a fracture of the growth plate (physis) at the top of the femur, where the specific location within the upper end and the laterality (left or right) are not documented. Crucially, this is a subsequent encounter for the fracture, and the bone has failed to heal properly, resulting in a nonunion.

Use this code for follow-up visits where a patient is being treated for a previously diagnosed physeal fracture of the proximal femur, and the physician explicitly documents that the fracture has not united. This applies when the exact site of the physeal fracture or the affected leg is not specified in the medical record.

• Ensure documentation clearly states "nonunion" for a subsequent encounter of a physeal fracture.
• Only use this code when the specific physeal location (e.g., capital, trochanteric) and laterality are truly unspecified.
• Confirm the encounter is for ongoing treatment of the nonunion, not an initial injury.