Displ Maisonneuve's fx unsp leg, subs for clos fx w nonunion

This code describes a specific type of ankle fracture, a Maisonneuve's fracture, which involves a spiral fracture of the proximal fibula with an associated ankle injury (often deltoid ligament rupture and/or medial malleolus fracture). In this instance, the fracture fragments are not properly aligned (displaced), and the bone has failed to heal after an initial treatment (nonunion). This code is used during follow-up care for this unhealed, closed fracture.

This code is appropriate for documenting subsequent encounters for patients diagnosed with a displaced Maisonneuve's fracture of an unspecified leg where the fracture has not united. This includes follow-up appointments for monitoring the nonunion, considering further interventions like bone grafting, or managing complications related to the unhealed fracture. It specifically applies when the skin over the fracture site remains intact.

• Ensure documentation clearly states "nonunion" and "displaced" for accurate code assignment.
• Verify the encounter is "subsequent" and the fracture is "closed."
• If the laterality (left or right leg) is specified in the documentation, a more specific code should be used.