Top 30 OB/GYN CPT Codes You Should Know

Billing mistakes cost OB/GYN practices thousands. Learn the 30 most important CPT codes and how to avoid costly errors and denials. For OB/GYN practice managers, missed codes, outdated modifiers, or mismatched diagnoses don’t just mean billing errors. They mean lost revenue. Billing errors in OBGYN can cost you thousands in missed reimbursements—meaning less revenue and fewer resources to pad your practice.

Coding errors are one of the top reasons claims are denied, delayed, or underpaid. With evolving coding rules, bundled maternity care, and a mix of outpatient and surgical services, even small oversights can lead to denied claims or compliance issues. As coding errors rise, your practice needs the right information to stay sharp and get reimbursed faster. Below are key strategies to improve your billing workflow:

• Know your top OB GYN CPT codes—especially for maternity care, diagnostics, and procedures.
• Avoid denials by using accurate modifiers, up-to-date codes, and proper documentation.
• Pair CPT codes with the right ICD-10 diagnoses to support reimbursement and reduce errors.
• Learn how to prevent allowable mismatch with our comprehensive guide.

Global Maternity Care Codes

Obstetric care often spans several months and involves multiple visits, diagnostics, and procedures. These CPT codes are used to simplify reimbursement by bundling all routine prenatal, delivery, and postpartum services into a single code. Use them only when a single provider manages the full pregnancy cycle. These codes bundle prenatal visits, delivery, and postpartum care into one line item.

• 59400 – Routine obstetric care including vaginal delivery. Covers prenatal visits, labor management, vaginal birth, and postpartum follow-up when provided by the same physician or group.
• 59510 – Routine OB care including cesarean delivery. Includes all antepartum care, a scheduled or emergency C-section, and postpartum follow-up.
• 59610 – Vaginal delivery after previous cesarean (VBAC). Used when the patient delivers vaginally after a history of C-section, with complete prenatal and postpartum care.
• 59618 – Attempted VBAC, ended in a repeat cesarean. Indicates labor was attempted vaginally but converted to cesarean with full perinatal care.

Tip: Use global codes only if the same provider delivers all components of care.

Standalone Obstetric Services

When care is split between providers or the patient receives only a portion of pregnancy-related services, standalone codes are essential. These CPT codes let you bill accurately for individual components like delivery-only or postpartum-only care. Use these when patients transfer care or do not receive all services in a global bundle.

• 59409 – Vaginal delivery only. Billable when the physician provides just the delivery portion of care, without prenatal or postpartum components.
• 59514 – Cesarean delivery only. Used when a provider performs the C-section but did not handle prenatal or postpartum services.
• 59430 – Postpartum care only. Covers routine follow-up visits after delivery, including physical and emotional recovery assessments.
• 59025 – Fetal non-stress test. Non-invasive test used to monitor fetal heart rate in response to movement, often used in high-risk pregnancies.
• 59050 – Continuous electronic fetal monitoring. Continuous tracing of fetal heart tones and contractions during labor, billed separately when not included in global delivery.

Obstetric Ultrasound and Diagnostics

Ultrasound is one of the most frequently performed diagnostic tools in OB care. These CPT codes differentiate by trimester, fetal count, and complexity of the scan. Selecting the correct code helps ensure your documentation aligns with payer requirements. These cover first, second, and third trimester imaging.

• 76801 – First-trimester ultrasound, single fetus. A detailed transabdominal scan used to evaluate fetal viability, gestational age, and early development.
• 76802 – First-trimester ultrasound, additional fetus. Applied in multifetal pregnancies to account for imaging each additional fetus beyond the first.
• 76805 – Standard second/third trimester, single fetus. A comprehensive scan evaluating fetal growth, anatomy, placenta location, and amniotic fluid volume.
• 76810 – Second/third trimester, additional fetus. Use this code when assessing additional fetuses during a comprehensive later-pregnancy scan.
• 76815 – Limited OB ultrasound (e.g., fetal heartbeat or position). Used for specific, quick assessments rather than full evaluations.

Summary Table of Common OB/GYN CPT Codes

The following table provides a quick reference for frequently used codes in obstetric practice: