Hospital Visits, how to code?


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When a physician sees an OB patient at the hospital for "rule out labor", or hypertension, dehydration, do you code the visit? Do you use an E/M? which state office or other outpatient visit, or would you use Observation care codes? But how does the doctor determine what is observation and what isn't? If I should use E/M codes do you submit with notes to prove it was a hospital visit and not part of routine obstetrical care or bill with a modifier? I would appreciate any help I can get, this has been a long standing question in the office.
hospital visit

First did your office admit the patient. If so,you need to use either 99221-99223.(next how long did she stay).need more information to help you.