Primary blast injury of duodenum, initial encounter

This code signifies direct damage to the duodenum resulting from the pressure wave generated by an explosion. This type of injury is distinct from secondary or tertiary blast injuries, focusing specifically on the immediate impact of the blast force on the duodenal tissue.

Apply this code for patients presenting with duodenal trauma directly attributable to a blast event, such as those injured in explosions, bombings, or industrial accidents involving high-pressure releases. It is used for the initial treatment of such an injury.

• Ensure documentation clearly specifies "primary blast injury" to differentiate from other blast-related trauma.
• Confirm the injury is to the duodenum; other intestinal segments have different codes.
• Verify this is the patient's initial encounter for treatment of this specific injury.