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

This code signifies a persistent failure of an unspecified fracture of the right femur to heal, specifically in the context of a previous severe open fracture (types IIIA, IIIB, or IIIC). "Nonunion" indicates that the bone ends have not united after a sufficient healing period, requiring further intervention.

This code is appropriate for subsequent encounters when a patient with a previously diagnosed severe open right femoral fracture (types IIIA, IIIB, or IIIC) is experiencing nonunion. It is used when the specific location of the fracture on the femur is not documented.

• Ensure documentation clearly states "nonunion" and specifies a prior open fracture of the right femur, type IIIA, IIIB, or IIIC.
• Verify this is a subsequent encounter, not the initial treatment for the fracture.
• If the specific site of the femoral fracture is known (e.g., shaft, neck), a more specific code should be used.