Other fracture of shaft of unspecified humerus, sequela

This code signifies a long-term complication or late effect resulting from a fracture of the main part (shaft) of the humerus, where the specific side (left or right) of the arm is not documented. It indicates that the initial injury has healed, but the patient is now experiencing residual issues directly attributable to that past fracture.

Apply this code when a patient presents with a current condition, such as chronic pain, malunion, nonunion, or functional limitation, that is a direct consequence of a previously sustained fracture to the shaft of an unspecified humerus. This is used after the initial healing phase of the acute fracture has passed.

• Always sequence this "S" code second, after the code for the specific sequela (e.g., M84.28 for nonunion).
• Ensure documentation clearly links the current condition to a previous fracture of the humeral shaft.
• Verify that the laterality of the original fracture was truly unspecified in the medical record.