| Level | Title | Maternal health | Hospital capabilities | Anesthesia staffing | Modified World Health Organization Patients* |
| Birth center | Birth center | Low risk | Not applicable | None | None |
| Level I | Basic care | Low to moderate risk | Limited obstetric ultrasound Blood bank | Anesthesia provider readily available at all times | Modified World Health Organization class I |
| Level II | Specialty care | Moderate to high risk | Computed tomography scanning/magnetic resonance imaging Maternal echocardiogram Nonobstetric ultrasound | Anesthesiologist readily available at all times | Modified World Health Organization class I or II |
| Level III | Subspecialty care | More complex maternal, obstetric and fetal conditions | Interventional radiology In-house capability of all blood components | Board-certified anesthesiologist physically present at all times | Modified World Health Organization class I or II, some III |
| Level IV | Regional perinatal health center | Most complex maternal conditions | ICU care with Maternal Fetal Medicine comanagement Cardiovascular surgery, ECMO, and transplant capabilities | Board-certified anesthesiologist with obstetric anesthesia fellowship or experience in obstetric anesthesia physically present at all times | Modified World Health Organization class I, II, III, or IV |
ECMO: extracorporeal membrane oxygenator; ICU: intensive care unit.
* The addition of the Modified World Health Organization classifications into the Maternal Levels of Care is an extrapolation based upon Drs. Meng and Arendt's experience, and is not a direct recommendation from the American College of Obstetricians and Gynecologists, Society of Maternal–Fetal Medicine, or Modified World Health Organization.