The only difference between the definition for etiquette and that for protocol is the replacement of the word custom for authority

What is the highest PAO2 one could expect to observe in an individual breathing room air at sea level?

a. 90 to 100 mm Hg b. 110 to 120 mm Hg c. 640 to 670 mm Hg d. 710 to 760 mm Hg

Harry reports to the office today with bleeding from the left ear. Upon visual examination there is hemorrhagic otitis externa present. The code(s) for this case is/are _________________________

Fill in the blank(s) with correct word