Disp fx of shaft of third MC bone, left hand, sequela

This code signifies a past fracture of the shaft of the third metacarpal bone in the left hand that has healed in a displaced position, leading to ongoing clinical issues. It indicates a chronic condition resulting from the initial injury, where the bone fragments did not align perfectly during healing.

This code is appropriate when documenting a patient presenting with long-term complications or residual effects directly attributable to a previously displaced and healed fracture of the left third metacarpal shaft. Examples include persistent pain, limited range of motion, deformity, or functional impairment in the left hand due to the malunion.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated (e.g., M21.042 for malunion).
• Ensure documentation clearly links the current condition to the old, displaced fracture of the left third metacarpal shaft.
• Verify that the "S" seventh character is appropriate for sequela, indicating a late effect of the injury.