Being that the patient is in observation and your GI was called in to consult you would follow E&M outpatient codes with POS 22 (9920x or 9921x) or depedent upon the carrier, consult code (99241-99245)Pls help with coding observation for a pt who has Medicare. Pt was OBS and seen by the Hospitalist (different provider) then referred to our provider for a consult for Gastro. How do I code our visit? Some Coders are stating use E/M codes?