Nondisp commnt fx shaft of humer, unsp arm, 7thK

This code signifies a follow-up encounter for a comminuted fracture of the humeral shaft that was initially nondisplaced. The key clinical feature is the presence of nonunion, meaning the fracture has failed to heal within the expected timeframe. This indicates a complication in the bone healing process requiring ongoing management.

Apply this code for patients presenting for subsequent care of a humeral shaft fracture where imaging and clinical assessment confirm nonunion. This would be used during office visits, hospital follow-ups, or for procedures related to managing the nonunion (e.g., bone grafting, internal fixation revision). It is appropriate after the initial healing period has passed without successful union.

• Ensure documentation clearly specifies "nonunion" and the "subsequent encounter" for this specific fracture.
• Verify the fracture was initially nondisplaced and comminuted, and located in the shaft of the humerus.
• Pair with external cause codes (V, W, X, Y) to describe the mechanism of injury, if known and relevant to the encounter.