Guides

Guides to reading the numbers

Short, cited explanations of what the CDC clinic report measures and what state law requires of insurers, written for patients comparing clinics.

• Donor Egg IVF Success Rates: What CDC Clinic Data Show

  In 2022, 45.1% of US frozen donor-embryo transfers led to a live birth. National CDC rates by donor embryo type, the clinic spread, and where donor IVF happens.

• How Many IVF Clinics Are in the US, and in Each State?

  449 US clinics reported 2022 IVF cycles to the CDC. California, New York and Texas hold 173 of them; nine states have one clinic and Wyoming has none.

• Frozen vs Fresh Embryo Transfer: How Common Is Each in IVF?

  At the median US clinic, 91.9% of embryo transfers in 2022 used frozen embryos (435 clinics). What CDC data show and cannot show about fresh vs frozen.

• Single vs Double Embryo Transfer: Why 86% Use One Embryo

  85.9% of US embryo transfers in 2022 were single, per the CDC. How often clinics' births were twins or more, by age band, across up to 372 clinics.

• IVF Success Rates by Age: How Much Do US Clinics Differ?

  National CDC 2022 IVF live-birth rates for each age band, and how far 381 US clinics spread around them, from the 10th to the 90th percentile.

• Which States Require Insurance to Cover IVF? Laws by State

  Statute text shows 12 states and DC require some insurers to cover infertility care and Texas only requires an offer. Limits, exemptions and clinic counts.

• What to Ask a Fertility Clinic About Costs and Insurance

  A checklist for the finance consult: what a cycle quote includes and leaves out, what to ask your insurer and HR, and why a state mandate may not cover you.

• What Do the IVF Age Bands Mean? Under 35 Through Over 40

  Why the CDC splits success rates into four age groups, how far national rates fall across them, and why donor-egg rates are not split by age at all.

• How to Read CDC IVF Success Rates: Retrievals vs Transfers

  What each row of the CDC clinic report measures, why per-retrieval rates are cumulative and per-transfer rates are not, and what fractions and dashes mean.