In which ISS body region should penetrating injuries that do not injure underlying structures be coded?

Penetrating injuries that do not damage the underlying structures should be coded as external injuries. This classification focuses on injuries that affect only the skin and underlying soft tissue without compromising deeper anatomical structures such as organs or bones.

When referring to the coding of injuries, it is essential to distinguish between external and internal injuries. External injuries can involve abrasions, lacerations, or punctures that do not result in a more severe internal injury. The external body region is specifically designed for such superficial injuries, allowing for accurate reporting and classification in medical records.

The other regions—abdominal, head and neck, and thoracic—are primarily intended for injuries that involve deeper structures within those areas, including organs such as the liver, heart, or lungs. Therefore, when determining the correct coding for a penetrating injury that remains superficial, the external category is most appropriate.