I work as E&M auditor for hospitalists. I have a hospitalist who works for our group, but also works in an outpatient clinic for another group. He saw a patient in outpatient clinic and later the same day, admitted the same patient as inpatient hospital. Since it is two different groups (different TIN) but same clinician, can both E&M codes be billed (99214 under outpatient group, then 99223AI under hospitalist group)?