Tidal wave due to storm, subsequent encounter

This code signifies an injury or health condition resulting from a tidal wave caused by a storm, specifically when the patient is receiving follow-up care after the initial treatment. It indicates that the patient is no longer in the acute phase of injury but is undergoing continued management, such as rehabilitation, wound care, or monitoring for delayed complications.

Apply this code for patients presenting for subsequent visits related to injuries sustained from a storm-induced tidal wave. This includes appointments for physical therapy, occupational therapy, re-evaluation of chronic conditions exacerbated by the event, or follow-up for infections developed post-exposure. It is appropriate when the patient has already received initial emergency or acute care for the tidal wave-related incident.

• Ensure the encounter is for follow-up care, not the initial treatment of the injury.
• Always code the specific injury or condition first, followed by this external cause code.
• Verify that the tidal wave was explicitly caused by a storm, as other causes (e.g., earthquake) would use different codes.