Unsp fx unsp femur, subs for opn fx type I/2 w nonunion

This code describes a situation where a patient has an unhealed, unspecified fracture of the femur that was initially an open fracture (Type I or II). The "subsequent encounter" indicates that the patient is receiving ongoing care for the nonunion of this previously treated open femoral fracture.

Use this code for follow-up visits, cast changes, or other ongoing management of an open femoral fracture (Type I or II) that has failed to heal properly. This applies when the specific location or type of femoral fracture is not documented, but nonunion is confirmed.

• Ensure documentation clearly states "nonunion" and that the initial fracture was an "open fracture type I or II."
• Only use for subsequent encounters; an initial encounter for a nonunion would use a different code.
• If the specific site of the femoral fracture is known (e.g., shaft, neck), a more specific code should be used.