Unsp physeal fx lower end of r femur, subs for fx w nonunion

This code signifies a fracture of the growth plate (physis) at the lower end of the right thigh bone, where the fracture has failed to heal properly after initial treatment. The "unspecified" nature indicates that the specific type of physeal fracture (e.g., Salter-Harris type) was not documented.

Use this code for follow-up encounters when a patient is being treated for a previously diagnosed, unhealed physeal fracture of the distal right femur. This typically involves ongoing management of the nonunion, such as further surgical intervention or extended conservative care.

• Ensure documentation clearly states "nonunion" and specifies the "subsequent encounter" for the fracture.
• Verify laterality (right femur) is explicitly documented.
• If the specific Salter-Harris type is known, a more specific code from the S79.1- series should be used instead.