To which ISS body region are the shoulders coded?

The shoulders are coded to the Extremities/Pelvic Girdle region because they are considered part of the upper limbs, which include the arms, hands, and shoulders. In anatomical terminology, the shoulders connect the arms to the torso and play a critical role in upper limb movement and support. The classification of body regions typically divides the human body into distinct areas for medical coding and assessment purposes, and upper limb structures are categorized under extremities.

The other regions identified in the question, such as the Thorax, Head/Neck, and Abdomen, represent areas that correspond to different functions and anatomical structures. The thoracic region primarily contains the ribcage and organs within the chest, whereas the head and neck encompass the cranial structures and cervical components. The abdomen refers to the area containing the digestive organs. Therefore, categorizing the shoulders under Extremities/Pelvic Girdle accurately reflects their anatomical and functional position within the context of the human body.