What category does a 3.5 mm Screw fall under when documented in surgery?

When documenting a 3.5 mm screw in surgery, it falls under the category of an implant because it is a device that is placed inside the body during a surgical procedure for the purpose of supporting a structure, promoting healing, or facilitating the function of the biological system. Implants are typically intended to remain in the body for an extended period or permanently, depending on the specific use case, which aligns with the characteristics of a 3.5 mm screw used in orthopedic procedures or similar surgical applications.

Implants are differentiated from instruments, which are tools used during surgery but are not meant to stay in the body; consumable supplies that are used during a procedure and subsequently discarded; and durable equipment, which refers to reusable devices that are used in various clinical environments but are not specifically intended to be integrated within the human body. Thus, categorizing the 3.5 mm screw as an implant is appropriate due to its intended function and permanence in surgical practice.