Unsp fx upper end of left tibia, subs for clos fx w malunion

This code signifies an unspecified fracture of the proximal (upper) end of the left tibia that has not healed correctly (malunion) and is currently under active treatment. The fracture is considered closed, meaning there is no open wound communicating with the bone.

Apply this code when a patient presents for follow-up care of a left proximal tibia fracture that has previously been treated conservatively (closed reduction) but is now demonstrating signs of malunion. This is appropriate for subsequent encounters where the malunion is being managed, prior to definitive healing.

• Ensure documentation clearly specifies "left" tibia and "upper end" or "proximal" to differentiate from other tibia fractures.
• Confirm the encounter is for a "subsequent encounter" and that the fracture is still actively being treated for malunion.
• Verify the fracture type is "unspecified" if no further detail (e.g., transverse, oblique) is provided in the medical record.