Monteggia's fx unsp ulna, 7thM

This code describes a Monteggia's fracture, which is a specific injury involving a fracture of the ulna and dislocation of the radial head, in an unspecified location of the ulna. This particular code specifies that the fracture was initially an open fracture (Type I or II) and is now experiencing nonunion, meaning the bone fragments are failing to heal together, during a subsequent encounter for care.

Use this code for patients presenting for follow-up care of a Monteggia's fracture where the initial injury was an open fracture (Type I or II) and there is documented evidence of nonunion. This applies when the patient is receiving ongoing treatment, such as surgical intervention for nonunion or continued conservative management, after the initial acute phase of the fracture.

• Ensure documentation clearly states "Monteggia's fracture" and "nonunion."
• Verify the original fracture was an open Type I or II, as this impacts code selection.
• Confirm this is a "subsequent encounter" for ongoing care, not the initial treatment.