What Disqualifies You From a VBAC? (And What Doesn't)
What Disqualifies You From a VBAC? (And What Doesn't)
This content is for educational purposes only and is not medical advice. Always consult your licensed healthcare provider regarding your individual health history and circumstances.
If you've had a C-section and you're considering a vaginal birth next time, one question tends to rise to the surface fast:
"Am I even a candidate?"
Sometimes that question comes from genuine curiosity. Sometimes it comes after a provider said you "aren't allowed" — with little explanation and no invitation to ask follow-up questions.
Here is the evidence-based truth: very few women are automatically disqualified from attempting a VBAC. Absolute contraindications do exist. But many of the barriers women encounter fall into a completely different category — one that has more to do with statistics, hospital policy, or provider preference than actual medical exclusion.
Let's clearly separate what truly disqualifies someone from what often doesn't.
Who Is Generally Considered a Candidate?
According to the American College of Obstetricians and Gynecologists, most women with one prior low transverse cesarean incision are candidates for TOLAC (ACOG, 2019). That includes many women who had a prior labor that stalled, were induced, were told their baby was too big, are over age 35, or have certain controlled medical conditions.
Candidacy is broader than most women are told.
True Medical Contraindications to VBAC
These are the situations where TOLAC is generally not recommended because the risk of uterine rupture or serious complications is meaningfully higher.
A prior classical uterine incision — meaning a vertical incision on the upper portion of the uterus — carries a significantly higher risk of rupture during labor compared to a low transverse incision (ACOG, 2019). This is one of the clearest contraindications. One critical clarification: your skin scar does not tell you your uterine incision type. Your surgical record does. Many women assume these are the same. They are not.
A prior documented uterine rupture also increases recurrence risk, and in those cases planned repeat cesarean before labor is typically recommended (ACOG, 2019).
Certain extensive uterine surgeries — such as a full-thickness myomectomy involving deep incisions into the uterine muscle — may also increase rupture risk. These require individualized review of your complete surgical history rather than a blanket answer.
Finally, some pregnancy complications necessitate cesarean delivery regardless of prior birth history. Placenta previa and certain persistent malpresentations are examples. These are situational and do not represent permanent disqualifications for future pregnancies.
What Does NOT Automatically Disqualify You
This is where the most confusion happens — and where women are most often given incomplete or inaccurate information.
A prior cesarean for failure to progress, arrest of dilation, or arrest of descent does not automatically disqualify you from VBAC. While these diagnoses may slightly reduce average success rates, many women with this exact history go on to have successful vaginal births (ACOG, 2019). What matters is context: Was labor induced? Was adequate time allowed? Was fetal positioning optimal? A label assigned during one birth does not define every birth that follows.
Two prior low transverse cesareans also do not automatically eliminate eligibility. This surprises many women. ACOG notes that attempting VBAC after two prior low transverse incisions can be reasonable in certain situations — particularly when there is no history of uterine rupture, no additional major risk factors, and birth is taking place in a facility equipped for emergency cesarean delivery (ACOG, 2019). Each additional scar does slightly increase overall rupture risk, which is why this decision requires individualized counseling rather than a blanket yes or no. But it is not automatically excluded.
Suspected macrosomia — being told your baby might be "too big" — is not a contraindication. Ultrasound weight estimates in late pregnancy can be off by a pound or more in either direction. Because of that variability, estimated fetal size alone does not prohibit a trial of labor after cesarean (ACOG, 2019). True cephalopelvic disproportion, where a baby physically cannot pass through the pelvis, is relatively uncommon when clearly and objectively diagnosed. Many prior "baby too big" conclusions were reached in the context of induction, malposition, or labor that was not given adequate time. A larger estimated baby may influence counseling. It does not eliminate eligibility.
Age over 35 is not a disqualification. Research shows VBAC success rates may be slightly lower in women over 35 on average (Guise et al., 2010), but this is a statistical trend — not a medical exclusion. Many women in their late 30s and early 40s have successful VBACs. Age is one variable in a larger picture.
Higher BMI is associated with slightly lower average VBAC success rates in some studies (Guise et al., 2010), but it is not a contraindication. Population-level statistical trends do not automatically apply to an individual woman. There is a meaningful difference between a statistical predictor and a medical exclusion, and your provider should be making that distinction clearly when counseling you.
Gestational diabetes and hypertensive disorders can influence how labor is managed and may increase the likelihood of induction — which in turn can affect VBAC success rates. But they do not automatically eliminate VBAC eligibility. Many women with well-managed gestational diabetes or hypertension attempt and achieve successful VBACs. These diagnoses influence planning. They do not determine the outcome.
Hospital policy is one of the most misunderstood barriers. Some hospitals do not offer TOLAC due to staffing or emergency surgical availability requirements. That is an institutional limitation — not a medical disqualification of you as a patient. If you encounter this, provider and facility selection become critical.
What If Trauma Is Part of Why You're Asking This Question?
For some women, the question "am I even a candidate?" is not just logistical. It is emotional. It comes from a place of already feeling like your body failed — like what happened the first time was evidence of something permanent and broken.
It isn't.
But if your first birth left you with anxiety that spikes around medical settings, intrusive memories, a disconnection from your current pregnancy, or grief and shame that hasn't resolved — those are signs your nervous system is still carrying what happened. And that matters for how you prepare for your next birth, regardless of what your eligibility status turns out to be.
→ If any of that sounds familiar, the free guide 5 Signs Your Birth Left a Mark on Your Nervous System was written for exactly this moment.
What About Uterine Rupture Risk?
For women with one prior low transverse incision, the risk of uterine rupture during TOLAC is approximately 0.5–0.9% (ACOG, 2019). The vast majority of labors do not result in rupture. Risk increases with a classical uterine incision, certain induction methods, and short interpregnancy interval.
Balanced counseling compares this risk against the cumulative risks of repeat cesarean — including placenta accreta spectrum, where the placenta attaches too deeply into the uterine wall and can cause serious complications at delivery, as well as surgical adhesions and increased complications in future pregnancies (Silver et al., 2006).
Neither option is risk-free. Informed decision-making requires both sides of that comparison — and you deserve to have them presented honestly.
How to Clarify Your Own Eligibility
If you are unsure where you stand, the most important questions to bring to your provider are these: What type of uterine incision do I have? Was there any documented uterine rupture? Is there a structural reason I cannot labor? Is this a medical contraindication or an institutional limitation?
Clear answers to those four questions will do more for your clarity than any amount of Googling. And if your provider cannot or will not answer them directly, that is also meaningful information about whether they are the right provider for this birth.
→ Download the free checklist — 10 Questions Every VBAC-Hopeful Woman Must Ask Her Provider — and bring it with you.
Final Thoughts
Very few women are truly disqualified from attempting a VBAC.
Absolute contraindications exist and matter. But most of the barriers women encounter are not in that category. They are statistical predictors, institutional policies, provider preferences, or misunderstandings that were never corrected — because no one took the time to explain the difference.
Understanding where you actually stand changes the conversation. It changes what questions you ask, what providers you seek, and how you walk into your next birth.
Clarity is not a luxury. For women preparing for VBAC after a traumatic birth, it is the foundation everything else is built on.
References
American College of Obstetricians and Gynecologists. (2019). Vaginal birth after cesarean delivery: ACOG Practice Bulletin No. 205. Obstetrics & Gynecology, 133(2), e110–e127.
Guise, J. M., Eden, K., Emeis, C., Denman, M., Marshall, N., Fu, R., & McDonagh, M. (2010). Vaginal birth after cesarean: New insights. Evidence Report/Technology Assessment No. 191. Agency for Healthcare Research and Quality.
Silver, R. M., Landon, M. B., Rouse, D. J., Leveno, K. J., Spong, C. Y., Thom, E. A., Moawad, A. H., Caritis, S. N., Harper, M., Wapner, R. J., Sorokin, Y., Miodovnik, M., Carpenter, M., Peaceman, A. M., O'Sullivan, M. J., Sibai, B., Langer, O., & Gabbe, S. G. (2006). Maternal morbidity associated with multiple repeat cesarean deliveries. Obstetrics & Gynecology, 107(6), 1226–1232.
Disclaimer: The Nurture Nook is an educational resource, not a medical practice. Nothing on this site constitutes medical advice, diagnosis, or treatment. All content is intended to support informed conversations with your healthcare provider — not to replace them.
