The following corrections should be made to the Boundaries and Relationship section: 

• DeviceUsage, DeviceRequest need to be added with the appropriate definitions in this section
• “Devices differ from medications because they are not "used up" - they remain active in or for a patient for a longer duration. They also may be re-used, particularly non-implanted devices and those used for diagnostics and procedures. Frequently, when a device is packaged with a medication, the ordering, dispense, and administration processes typically focus on the medication aspects and reference the device, rather than that the Device is the focus of the ordering, dispense, and administration process. In the case of an infusion pump, while some actions are focused on the device (e.g., ordering to a room or maintaining the pump), the focus is as well on the medication while the device is used for administration. However, that separation is not always as clear and may be impacted by specific implementations. Regardless, the Medication resource should not be used to represent (implanted) devices, rather reference the relationship where an actual device needs to be tracked in addition to the medication.” Should be rewritten to be clear about the boundary between devices and medications.