Which coding section includes root operations related to transfusion?

The correct answer is based on the fact that the Administration section within ICD-10-PCS encompasses all root operations associated with the delivery of substances to the body. This includes transfusions, where blood or blood products are administered intravenously to restore or improve physiological balance. The operation focuses on the actual process of giving or delivering these substances, which directly ties to how transfusions function in medical treatment.

In the context of coding, the Administration section specifically includes root operations like "Infusion," which refers to the introduction of fluids, such as blood, into the vascular system. This detail is crucial for accurately coding procedures that involve transfusions, thus making this section the appropriate choice for questions regarding transfusion-related coding.

Other sections, such as Placement and Extraction, describe different types of procedures. Placement is reserved for the insertion of devices rather than the delivery of substances, while Extraction pertains to taking something out of the body, which does not apply to transfusions. Alteration focuses on modifying the anatomical structure but does not cover the act of administering medical substances like blood transfusions.