Oth fx left femur, subs for opn fx type I/2 w malunion

This code describes a left femur fracture, not otherwise specified as a shaft, distal, or proximal fracture, that was initially an open fracture (Type I or II) and has subsequently healed incorrectly. Malunion indicates that the bone fragments have joined in a deformed position, potentially affecting function or causing pain.

This code is used when a patient presents for follow-up care of a left femur fracture that was initially open (Type I or II) and is now demonstrating evidence of malunion. This could include evaluations for pain, limited range of motion, or planning for corrective surgery related to the improperly healed fracture.

• Ensure documentation clearly specifies "left" femur and confirms the initial fracture was an "open type I or II."
• Verify that the encounter is for a "subsequent" phase of care, not the initial treatment.
• Distinguish from nonunion (failure to heal) and delayed union (healing slower than expected).