Oth fx fourth MC bone, right hand, subs for fx w malunion

This code signifies a fracture of the fourth metacarpal bone in the right hand that is currently undergoing treatment for a malunion, meaning the bone has healed in an incorrect anatomical position. This is not the initial encounter for the fracture, but a follow-up visit where the malunion is being addressed.

Use this code for a patient presenting for evaluation or treatment of a malunited fracture of the right fourth metacarpal. This applies when the original fracture has already been treated and the current focus is on managing the improper healing. Examples include follow-up appointments for conservative management of a malunion or pre-operative assessments for corrective surgery.

• Ensure documentation clearly states "malunion" and specifies the "right hand" and "fourth metacarpal."
• Verify this is a "subsequent encounter" and not the initial treatment for the fracture or a nonunion.
• Do not use this code if the fracture is still acute or if the complication is a nonunion (failure to heal).