It is possible that 59430 is appropriate. Here is additional information about the code:
Clinical Responsibility
Typical postpartum care includes ongoing evaluation of the mother’s physical and mental status following birth, a physical examination to ensure that the mother is recovering normally, discussion of lactation, nutrition, and exercise after delivery, review or initiation of birth control options, evaluation of immunizations, and collection of a screening Pap smear specimen if warranted. The first visit can be at four to six weeks following vaginal delivery, but if the patient has a cesarean delivery, the first visit may be seven to fourteen days following delivery and includes minor cesarean wound care. The physical examination should include measuring weight and blood pressure, and an examination of the breasts, abdomen, as well as a pelvic exam. The provider will also incorporate preconceptual counseling into postpartum care, when appropriate, to prepare the patient for a future pregnancy.
If that accurately describes the service your clinician provided, then 59430 should be coded. 59430 would be in place of 99213, unless there was an unrelated visit as well (ie - pt seen for sprained ankle, and also postpartum care.) 99213 is a column 2 CCI edit with 59430.
Another caveat is that the delivering physician should not have billed global for the delivery, which would include postpartum care.
Side note: in my suburban/urban area, it would be unheard of for a family practice clinician to provide postpartum care, but could be more common in rural areas.