This is my clinic's protocol, however, I must tell you, we are a mixed practice, general practioners with other physcians with ob, internal med, ortho, and surgery specialties.
When an ob is seen for the antepartum care and delivered by the same physcian, a global is charged, however, if another physcian delivers, then the antepartum care is charged on the last ov visit with the primary ob physcian and the delivery is charged out under the delivering physcian.
In these cases, the original ob physcian does the followup and this is billed.
Hope this helps.