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

This code describes a previously sustained, unspecified fracture of the left femur that has failed to heal properly (nonunion). The original fracture was an open fracture, classified as Type IIIA, IIIB, or IIIC, indicating significant soft tissue damage and contamination. This code is used during follow-up care for this specific complication.

Use this code for subsequent encounters when a patient presents with a documented nonunion of an unspecified left femoral fracture that was initially an open fracture of Gustilo-Anderson Type IIIA, IIIB, or IIIC. This applies to ongoing management, such as wound care, bone grafting procedures, or hardware revision, related to the nonunion.

• Always verify the laterality (left femur) and the specific type of open fracture (IIIA, IIIB, or IIIC) from the medical record.
• Ensure "nonunion" is explicitly documented; if malunion is present, a different code would be appropriate.
• This code is for subsequent encounters only; an initial encounter for the fracture would use a different code.