Unsp fx lower end of l humerus, subs for fx w nonunion

This code describes a situation where a patient has an unspecific fracture of the lower part of their left upper arm bone, and the fracture is not healing properly. This is not the initial treatment for the injury, but rather a follow-up encounter where the nonunion is being addressed.

Use this code for a patient presenting for ongoing management of a left distal humerus fracture that has failed to unite. This would apply during subsequent office visits, hospital stays, or surgical interventions specifically addressing the nonunion.

• Requires an additional code to specify the type of nonunion, if known (e.g., malunion, delayed union).
• Ensure documentation clearly states "nonunion" and specifies the "left humerus, lower end."
• Do not use for initial treatment of the fracture or for routine follow-up of a healing fracture.