Nondisp trimalleol fx unsp low leg, 7thP

This code describes a situation where a patient has a trimalleolar fracture (involving the medial, lateral, and posterior malleoli) in an unspecified lower leg that was initially treated without surgery and is now healing incorrectly, resulting in a malunion. The fracture itself is not displaced, meaning the bone fragments are still in their normal alignment.

This code is appropriate for follow-up encounters where a physician is assessing the healing of a previously treated, non-displaced trimalleolar fracture of an unknown lower leg, and imaging or clinical examination confirms that the bone fragments have healed in an unsatisfactory position. This would apply when the patient is still receiving active treatment for the malunion, such as casting adjustments or planning for corrective surgery.

• Ensure documentation clearly specifies "nondisplaced" and "trimalleolar" fracture.
• Verify that the encounter is for a "subsequent encounter" and that "malunion" is explicitly documented as the complication of healing.
• Confirm that the lower leg (right or left) was not specified in the initial diagnosis or subsequent documentation.