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

This code signifies a left femur fracture, other than those specified elsewhere, that is currently undergoing treatment for a nonunion. The initial injury was an open fracture of type IIIA, IIIB, or IIIC, indicating significant soft tissue damage and contamination. The subsequent encounter aspect means the patient is receiving routine care during the healing phase, but the fracture has failed to unite.

Use this code for follow-up encounters where a patient with a previously diagnosed open left femur fracture (Type IIIA, IIIB, or IIIC) is being treated for a confirmed nonunion. This applies when the patient is receiving ongoing care such as cast changes, wound care, or monitoring for surgical intervention to address the nonunion. It reflects the chronic nature of the healing complication.

• Ensure documentation clearly states "nonunion" and specifies the left femur.
• Verify the original fracture was an open type IIIA, IIIB, or IIIC.
• This code is for subsequent encounters, not the initial treatment of the fracture or nonunion.