Other exposure to forces of nature, subsequent encounter

This code signifies an injury or adverse health effect resulting from an unspecified or less common natural phenomenon, such as a landslide, volcanic eruption, or severe dust storm. It indicates that the patient is receiving follow-up care for an initial injury sustained during such an event.

Apply this code for subsequent encounters when a patient presents for ongoing treatment, evaluation, or management of conditions directly attributed to an exposure to a natural force not specifically categorized elsewhere. Examples include follow-up for fractures sustained during an earthquake, respiratory issues from volcanic ash, or psychological trauma after a tsunami.

• Always sequence this external cause code after the primary diagnosis code describing the actual injury or condition.
• Ensure the "D" seventh character is appropriate for a subsequent encounter, indicating active treatment or recovery phase.
• Avoid using this code if a more specific external cause code for a natural disaster (e.g., flood, hurricane, lightning) is available.