Final answer:
The correct ICD-10-PCS root operation term for a patient being placed on a ventilator is B) assistance as it aids with pulmonary ventilation.
Step-by-step explanation:
When considering ICD-10-PCS (International Classification of Diseases, Tenth Revision, Procedure Coding System) terminology for a patient who could not breathe on his own and was therefore placed on a ventilator, the correct root operation term is B) assistance. This term is used because the ventilator is assisting with pulmonary ventilation, the mechanical movement of air into and out of the lungs, which is necessary for external respiration. Neither restoration, introduction, nor performance accurately describe the action being performed in this scenario. Assistance indicates that the device is aiding the physiological function, which is exactly what the ventilator does in supporting the patient's breathing.
The correct root operation term used in ICD-10-PCS for placing a patient on a ventilator when they cannot breathe on their own is assistance. The ventilator is assisting the patient's breathing by providing mechanical support to help them get the oxygen they need. The root operation term 'assistance' in ICD-10-PCS refers to providing support or helping the patient with a physiological function that they are unable to perform on their own.