Depends on who the carrier is
WPS Medicare will not allow for an automatic level based on the provider being unable to obtain the info from the patient directly. If you do not have all the required elements to support an initial, you drop down to the subsequent care levels. If you do not have enough for those, you use the unlisted 99499.
The official guidelines state providers should document why they were unable to obtain whatever it is they couldn't get. They do not state you can count that documentation as meeting the leveling requirements.
Some carriers may allow that, others do not. Be sure what your carrier will accept before automatically giving credit for missing or unobtainable information.
Laura, CPC, CPMA, CPC-I, CANPC, CEMC