Flail chest, initial encounter for closed fracture

This code signifies a severe chest wall injury characterized by paradoxical movement of a segment of the rib cage due to multiple rib fractures in at least two places per rib. This instability compromises respiratory mechanics and can lead to significant respiratory distress and hypoxemia.

Apply this code for patients presenting with a newly diagnosed flail chest resulting from blunt trauma, such as a motor vehicle accident or fall. This is appropriate for the initial treatment period, including emergency department visits and initial hospital admissions.

• Ensure documentation clearly specifies "closed" fractures; otherwise, a different code for open fractures would be necessary.
• Confirm the "initial encounter" status; subsequent care for the same injury will require a different seventh character.
• Always code any associated injuries, such as pneumothorax or hemothorax, in addition to the flail chest.