A Good Faith Estimate is a written breakdown of expected charges your provider must give you before any scheduled care. The No Surprises Act (45 CFR 149.610) made this a federal right in 2022, and it applies to both insured and uninsured patients. For childbirth, this means your hospital, OB, anesthesiologist, and any other scheduled provider each owe you a separate estimate.
The GFE isn't a final bill, but it binds providers in a meaningful way. If your actual charges come in more than $400 higher than the estimate, you have the right to dispute them through the Patient-Provider Dispute Resolution process. That's real leverage, and most patients don't know they have it.
For a hospital birth, expect multiple estimates: one from the hospital for the facility fee, one from your OB's practice, and one from the anesthesia group if you plan to use an epidural. Pediatricians who examine your newborn in the hospital are sometimes a separate charge too.