I just want to make sure I understand correctly before I try to answer. Your physician did not deliver the baby? Assuming your physician did not do the delivery, then I would select the antepartum care only code that represents the number of antepartum visits you provided including the last one on the day of delivery. Here is a snippet from CPT assistant with regards to the global if your physician did deliver. Maybe it will help.
Use codes 59400 and 59510 when one physician or physician group practice provides all obstetric care, since third-party payors have differing requirements. The number of antepartum visits a patient is allowed varies, depending on when she enrolls for antepartum care and when she delivers. Typically, if a patient enrolls in the early first trimester and delivers at term, she will have approximately 13 antepartum visits. However, even if a patient delivers prematurely and the appropriate number of antepartum visits have been scheduled, as defined by CPT, the definition of global service has been met.
If a patient is seen more frequently than defined by CPT (eg, a patient develops hypertension at 32 weeks of gestation and must be seen weekly rather than biweekly), the global service is reported, up to and including 13 visits. If the total number of antepartum visits exceeds 13 because of a high-risk condition, the additional visits may be reported using the E/M codes for each additional visit.
Patients enrolling for antepartum care late in their pregnancy may require more intensive management over fewer visits, to the point that the level of care matches or surpasses that given to a typical obstetric patient. Although you should consider these situations individually, it is usually appropriate to report the global package codes for patients enrolling late for obstetric care provided by the same physician or physician group. When appropriate, you may use the -52 modifier to indicate reduced services.
Lashel , CPC CPC-I CEMC CPPM