Oth fx right femur, subs for opn fx type 3A/B/C w nonunion

This code signifies a follow-up visit for a patient who previously sustained an open fracture of the right femur, specifically a severe open fracture classified as Type IIIA, IIIB, or IIIC. The key clinical finding for this encounter is that the fracture has failed to heal properly, resulting in a nonunion.

This code is appropriate for subsequent encounters where a patient with a previously diagnosed open right femoral fracture (Type IIIA, IIIB, or IIIC) is being evaluated or treated for nonunion. This includes situations where surgical intervention for nonunion is being planned or has already occurred, or during ongoing conservative management for delayed healing that has progressed to nonunion.

• Always confirm the laterality (right femur) and the specific type of open fracture (IIIA, IIIB, or IIIC) from the medical record.
• Ensure the documentation clearly states "nonunion" as the reason for the subsequent encounter, indicating a failure of the fracture to heal.
• Do not use this code for initial encounters or for subsequent encounters where the fracture is healing normally or with delayed union (without confirmed nonunion).