Displaced comminuted fx shaft of humerus, unsp arm, sequela

This code signifies a long-term complication or late effect stemming from a comminuted fracture of the humeral shaft. The fracture was displaced at the time of injury, and the specific arm (left or right) is not documented. The "sequela" designation indicates that the acute phase of the injury has passed, and the patient is now experiencing residual problems related to the original fracture.

Use this code when documenting conditions such as malunion, nonunion, chronic pain, nerve damage, or limited range of motion in the humerus that are directly attributable to a previously sustained displaced comminuted shaft fracture. This code is appropriate for follow-up encounters occurring long after the initial healing period, where the focus is on managing the lasting effects of the injury.

• Always use an additional code to specify the nature of the sequela (e.g., M84.28 for nonunion, G54.0 for brachial plexus disorders).
• Ensure documentation clearly links the current condition to the prior humeral shaft fracture.
• Do not use this code for initial treatment or active healing phases of the fracture; those require acute fracture codes.