Discharge/readmit same day

Pateint leaves inpatient status ama in the early morning hours after a two day stay.
Provider charges a discharge and when patient returns same day and is admitted again he has charged an admission. Is this correct?
Medcoder

Hospital Discharge & Readmit on Same Day

If the patient is discharged & readmitted on the same day for symptoms related to or evaluation of the prior stay medical condition, the hospital will combine the two and bill as a single claim. If the readmit is unrelated to the prior stay medical condition, the hospital will append condition code B4 to the 2nd claim that shows the same admit day as the prior claim's discharge date.

Guideline can be found in the CMS Hospital Claims Manual Chapter 3, and also has been supported by QIO under the same circumstances.

Hospital discharge and readmit on the same day

On the physician side, the Claims Processing Manual doesn't specifically address this example, but this is what I see from looking at the manual.

Two E/M services on the same day for the same reason are "added together" and billed as one code.

Hospital services are all defined as per day codes.

Putting those two together, I think you will only be paid for one E/M service. Since you will have billed a subsequent visit the day before, and one the next day, I think you'll have the admission or discharge service initially denied (it will look like an error, in the middle of the subsequent visits) and you'll have to appeal with a letter.

You can certainly try to bill both (because both were performed and documented) but it seems unlikely to me you'll be paid for both.