OB/GYN medical billing requires accurate coding because it combines two specialties: obstetrics, which covers pregnancy, childbirth, and postpartum care, and gynecology, which focuses on women’s reproductive health outside pregnancy. Every service provided by an OB/GYN practice must be reported using Current Procedural Terminology (CPT®) codes to support accurate reimbursement, compliance, and communication with payers.
In 2026, many practices still rely on global maternity care codes that bundle prenatal visits, delivery, and postpartum care. However, major maternity coding changes are scheduled for January 1, 2027, affecting how providers report prenatal care, labor management, delivery services, and postpartum care.
This guide explains common OB/GYN CPT codes used in 2026 and highlights the key changes practices need to prepare for before the 2027 maternity coding update.
What Are OB/GYN CPT Codes?
Current Procedural Terminology (CPT®) codes are standardized five-digit medical procedure codes maintained by the American Medical Association (AMA) to describe healthcare services provided by OB/GYN practices. These codes are used for reporting office visits, preventive exams, prenatal care, delivery services, surgical procedures, ultrasound, diagnostic testing, laboratory services, and counseling.
CPT codes create a common billing language between physicians, medical coders, insurance companies, Medicare, Medicaid, and healthcare organizations, helping ensure accurate reimbursement and compliance.
For example, CPT 59400 may be used when one provider manages a complete routine vaginal delivery, including antepartum care, delivery, and postpartum care. However, if prenatal care and delivery are provided by different providers, separate component codes may be required. Accurate OB/GYN billing & coding services depends on proper documentation, medical necessity, and understanding payer-specific billing guidelines.
Difference Between OB CPT Codes and Gynecology CPT Codes
Although obstetrics and gynecology are closely related specialties, their CPT coding focuses on different areas of women’s healthcare.
| Category | OB CPT Codes (Obstetrics) | Gynecology CPT Codes |
|---|---|---|
| Primary Focus | Pregnancy, childbirth, and postpartum care | Reproductive healthcare outside pregnancy |
| Common Services | Prenatal visits, fetal monitoring, labor management, delivery services, postpartum care | Annual examinations, contraception services, colposcopy, hysteroscopy, endometrial biopsy, hysterectomy, infertility evaluation |
| Common CPT Code Range | 59000–59899 | Various CPT categories covering gynecologic procedures, preventive care, surgery, and diagnostic services |
| Main Purpose | Reporting services related to pregnancy and maternal-fetal care | Reporting diagnosis, treatment, and procedures related to women’s reproductive health conditions |
Common OB/GYN CPT Code Categories in 2026
OB/GYN practices commonly use CPT codes from several categories:
| OB/GYN CPT Code Category (2026) | Used For | Common Services Included |
|---|---|---|
| Evaluation and Management (E/M) Codes | Patient evaluation and ongoing care management | New patient visits, established patient visits, prenatal problem visits, consultations, follow-up care |
| Preventive Medicine Codes | Preventive women’s healthcare services | Well-woman examinations, preventive counseling, health risk assessments, routine screenings |
| Global Maternity Care Codes | Complete pregnancy care reporting | Prenatal care, delivery services, routine postpartum care |
| Procedure and Surgical Codes | Medical and surgical interventions | Cesarean delivery, hysterectomy, colposcopy, D&C procedures, fertility procedures |
| Diagnostic Imaging and Monitoring Codes | Pregnancy monitoring and diagnostic evaluation | Obstetric ultrasound, fetal monitoring, biophysical profiles |
Evaluation and Management (E/M) CPT Codes in OB/GYN
E/M codes are among the most frequently used codes in OB/GYN practices.
They report services where providers evaluate, diagnose, and manage patient conditions.
Common factors affecting E/M code selection include:
- Patient type
- Medical decision-making complexity
- Time spent
- Clinical problems addressed
New Patient Office Visit Codes
| CPT Code | Description |
|---|---|
| 99202 | New patient visit, straightforward complexity |
| 99203 | New patient visit, low complexity |
| 99204 | New patient visit, moderate complexity |
| 99205 | New patient visit, high complexity |
Established Patient Office Visit Codes
| CPT Code | Description |
|---|---|
| 99211 | Minimal evaluation service |
| 99212 | Straightforward follow-up |
| 99213 | Low complexity visit |
| 99214 | Moderate complexity visit |
| 99215 | High complexity visit |
Preventive OB/GYN Visit CPT Codes
Preventive services focus on maintaining health and identifying potential risks early.
Common services include:
- Health history review
- Preventive counseling
- Screening recommendations
- Pelvic examination
- Breast examination
New Patient Preventive Codes
| CPT Code | Age Range |
|---|---|
| 99384 | 12–17 years |
| 99385 | 18–39 years |
| 99386 | 40–64 years |
| 99387 | 65+ years |
Established Patient Preventive Codes
| CPT Code | Age Range |
|---|---|
| 99394 | 12–17 years |
| 99395 | 18–39 years |
| 99396 | 40–64 years |
| 99397 | 65+ years |
Global Maternity Care CPT Codes in 2026
The traditional global maternity package is one of the most important concepts in OB billing.
A global maternity code combines:
- Antepartum care
- Delivery
- Postpartum care
Instead of billing every prenatal visit separately, providers submit one global code when they provide the complete pregnancy episode.
CPT 59510 Explained: Routine Cesarean Delivery Package
CPT 59510 reports a complete routine cesarean maternity care package when one provider manages the full pregnancy episode.
CPT 59510 Includes:
| Service Component | Included Care |
|---|---|
| Prenatal Care | Routine pregnancy monitoring and management before delivery |
| Cesarean Delivery | Surgical delivery of the baby by C-section |
| Postpartum Care | Routine follow-up after cesarean delivery |
CPT 59510 Applies When:
| Requirement | Explanation |
|---|---|
| Complete Pregnancy Management | The provider manages prenatal care, performs the cesarean delivery, and provides postpartum care |
| No Split Care Arrangement | Another provider did not separately manage a portion of the maternity episode |
| Documentation Supports Global Care | Medical records support all included maternity services |
Note: Global maternity codes should only be reported when the provider meets the complete care requirements. When care is transferred, split between providers, or only specific services are performed, component codes may be required instead.
When Global Maternity Codes Should Not Be Used
The global package does not apply in every situation. Separate coding may be required when global code denials become a concern, particularly when:
- A patient transfers care
- Multiple providers manage different stages
- Insurance changes during pregnancy
- Only delivery services are provided
- Only postpartum care is provided
Component OB Billing Codes (2026)
When global maternity billing does not apply, providers must report individual services based on the care they actually provided. Component billing is commonly used when care is transferred, split between providers, or only specific portions of maternity care are performed.
| Service Category | CPT Code | Description |
|---|---|---|
| Antepartum Care Only | 59425 | Antepartum care only, including 4–6 prenatal visits |
| Antepartum Care Only | 59426 | Antepartum care only, including 7 or more prenatal visits |
| Delivery Only | 59409 | Vaginal delivery only, including delivery management without antepartum or postpartum care |
| Delivery Only | 59514 | Cesarean delivery only, without prenatal or postpartum care |
| Delivery With Postpartum Care | 59410 | Vaginal delivery with postpartum care when prenatal care was provided by another provider |
| Delivery With Postpartum Care | 59515 | Cesarean delivery with postpartum care when prenatal care was provided separately |
Global billing errors can also contribute to global billing delays and disrupt predictable cash flow.
Antepartum Care Only Codes
| CPT Code | When Used |
|---|---|
| 59425 | Used when a provider manages 4–6 prenatal visits but does not provide the complete global maternity package |
| 59426 | Used when a provider manages 7 or more prenatal visits without providing complete antepartum, delivery, and postpartum care |
Important: If a provider performs only 1–3 prenatal visits, these codes are generally not used. Individual E/M visit codes (99202–99205 or 99211–99215) may be required based on patient status and documentation.
Delivery Only Codes
| CPT Code | When Used |
|---|---|
| 59409 | Used when the provider performs only vaginal delivery and another provider handles prenatal or postpartum care |
| 59514 | Used when the provider performs only cesarean delivery without managing prenatal or postpartum services |
Delivery With Postpartum Care Codes
| CPT Code | When Used |
|---|---|
| 59410 | Used when the provider performs vaginal delivery and provides postpartum care, but another provider managed prenatal care |
| 59515 | Used when the provider performs cesarean delivery and provides postpartum care, but prenatal care was handled separately |
Coding Tip: Accurate component billing depends on documenting exactly which portion of maternity care the provider performed. Incorrectly applying global codes when care was split between providers can lead to claim denials, payment delays, and payer audits.
VBAC and TOLAC CPT Codes
Patients with a previous cesarean delivery require special coding consideration because the delivery approach and provider services may differ from routine vaginal delivery coding.
VBAC stands for:
Vaginal Birth After Cesarean
A vaginal delivery that occurs after a previous cesarean birth.
TOLAC stands for:
Trial of Labor After Cesarean
The planned attempt to achieve a vaginal delivery after a previous cesarean.
Common VBAC CPT Codes
| CPT Code | Description | When Used |
|---|---|---|
| 59610 | VBAC vaginal delivery with global maternity care | Used when the provider manages antepartum care, successful VBAC delivery, and postpartum care |
| 59618 | Failed VBAC resulting in cesarean delivery with global maternity care | Used when a patient attempts VBAC but requires cesarean delivery and the provider manages the complete maternity episode |
Obstetric Ultrasound CPT Codes
Ultrasound services are commonly reported separately from maternity care when medically necessary.
Common OB ultrasound codes include:
| CPT Code | Description |
|---|---|
| 76801 | First trimester ultrasound |
| 76805 | Standard second/third trimester ultrasound |
| 76811 | Detailed fetal anatomy ultrasound |
| 76815 | Limited ultrasound |
| 76816 | Follow-up ultrasound |
| 76817 | Transvaginal obstetric ultrasound |
Fetal Monitoring CPT Codes
Fetal monitoring helps evaluate fetal wellbeing during pregnancy.
Common codes:
| CPT Code | Description |
|---|---|
| 59025 | Non-stress test |
| 59020 | Contraction stress test |
These services may be used for:
- High-risk pregnancy monitoring
- Decreased fetal movement
- Post-date pregnancy
- Maternal complications
Major OB/GYN CPT Change Coming January 1, 2027
The biggest upcoming change is the restructuring of maternity care reporting. For decades, OB practices have relied on global maternity codes that combine multiple services into one package.
Starting January 1, 2027, maternity services will move toward a more detailed reporting structure where individual components of care will be documented separately.
The change will affect:
- Antepartum care
- Labor management
- Delivery services
- Postpartum care
Current 2026 Global Maternity Model vs 2027 Model
| 2026 Billing Model | 2027 Billing Model |
|---|---|
| Prenatal visits, delivery, and postpartum care bundled together | Services reported individually |
| Global maternity codes commonly used | Component-based reporting |
| Less separation between services | Greater documentation detail |
| Single payment structure | Individual service reporting |
What Happens to CPT 59400 After January 1, 2027?
CPT 59400 — Routine Vaginal Delivery Global Package
Currently, CPT 59400 includes:
- Antepartum care
- Vaginal delivery
- Routine postpartum care
Under the new maternity structure, the traditional global maternity reporting model will change.
Providers will need to document and report different phases of care separately instead of relying only on one bundled code.
What Happens to CPT 59510?
CPT 59510 — Routine Cesarean Delivery Global Package
Currently includes:
- Prenatal care
- Cesarean delivery
- Postpartum care
After the restructuring, cesarean-related services will require more detailed reporting based on:
- Type of cesarean delivery
- Provider involvement
- Labor status
- Postpartum management
Changes to Antepartum Care Billing in 2027
Antepartum care refers to healthcare provided before delivery.
Currently, many practices use:
- CPT 59425
- CPT 59426
for limited prenatal care services.
The future model will rely more heavily on Evaluation and Management (E/M) codes.
Expected Antepartum Coding Approach
Common E/M codes:
| CPT Code | Description |
|---|---|
| 99202–99205 | New patient outpatient visits |
| 99211–99215 | Established patient outpatient visits |
Example:
Current Model
A patient receives routine prenatal visits.
The practice bills:
59400
(one bundled maternity service)
Future Model
The practice may report:
- Individual prenatal E/M visits
- Labor management services
- Delivery services
- Postpartum services
Each service requires supporting documentation.
Labor Management Coding Changes
One of the major areas affected by the 2027 transition is labor management.
Labor management includes:
- Monitoring labor progression
- Evaluating maternal condition
- Monitoring fetal status
- Managing complications
- Making delivery decisions
The new approach recognizes labor management as a distinct service.
Factors Affecting Labor Management Complexity
The complexity level may depend on:
Maternal Factors
Examples:
- Hypertension
- Diabetes
- Obesity
- Cardiac conditions
- Previous cesarean delivery
Fetal Factors
Examples:
- Abnormal fetal heart rate
- Growth restriction
- Multiple gestation
- Presentation concerns
Labor Factors
Examples:
- Prolonged labor
- Failed induction
- Labor complications
- Need for additional interventions
Obstetric Ultrasound Billing After Coding Changes
Ultrasound services remain an important part of OB care.
Common ultrasound services include:
| CPT Code | Description |
|---|---|
| 76801 | First trimester ultrasound |
| 76805 | Standard anatomy ultrasound |
| 76811 | Detailed fetal anatomy examination |
| 76815 | Limited ultrasound |
| 76816 | Follow-up ultrasound |
| 76817 | Transvaginal ultrasound |
OB/GYN Modifiers for 2026 and Beyond
Modifiers provide additional details about services reported on medical claims. In OB/GYN billing, correct modifier usage helps explain special circumstances, supports accurate reimbursement, and reduces claim denials caused by incorrect code combinations.
| Modifier | Purpose | When Used in OB/GYN Billing | Example |
|---|---|---|---|
| Modifier 25 | Significant, separately identifiable E/M service performed on the same day as another procedure | Used when a provider performs a separate evaluation and management service in addition to a procedure or other service | A pregnant patient receives routine prenatal care and is separately evaluated for severe headaches or hypertension. If documentation supports a separate service, modifier 25 may be added to the E/M code |
| Modifier 24 | Unrelated E/M service during a postoperative global period | Used when a provider evaluates a condition unrelated to the original surgery during the postoperative period | A patient returns after gynecologic surgery for evaluation of an unrelated medical condition |
| Modifier 51 | Multiple procedures performed during the same session | Used when more than one surgical procedure is performed during the same encounter | A patient receives multiple gynecologic surgical procedures during one operative session |
| Modifier 59 | Distinct procedural service | Used when two procedures that are normally bundled are performed separately and are medically necessary | Two procedures are performed during the same visit but involve separate clinical services and documentation supports independent reporting |
| Modifier 26 | Professional component of a diagnostic service | Used when the physician provides interpretation or professional review of a diagnostic test | Physician interpretation of an ultrasound or imaging study |
| Modifier TC | Technical component of a diagnostic service | Used for the equipment, facility, and technical resources involved in performing a diagnostic service | Reporting the technical portion of imaging services performed using facility equipment |
Modifier Documentation Tip
Proper documentation is essential when applying modifiers. Medical records should clearly support:
- The separate service provided
- Medical necessity
- Procedure details
- Provider involvement
- Reason the modifier applies
Incorrect modifier usage is one of the most common causes of OB/GYN claim denials, delayed payments, and payer audits. Regular coding reviews can help practices identify modifier errors before claims are submitted.
How OB/GYN Practices Should Prepare for January 2027
| Preparation Area | What Practices Should Review | Key Actions |
|---|---|---|
| Update EHR Systems | Billing templates, prenatal visit workflows, delivery documentation, postpartum templates | Update electronic health record workflows to support new CPT reporting requirements and ensure documentation captures all required details |
| Train Providers and Coders | New CPT structure, documentation requirements, modifier usage, claim submission changes | Provide training to physicians, coders, and billing teams on updated maternity coding rules and reporting guidelines |
| Review Revenue Cycle Performance | Denial rates, incorrect modifier usage, global billing errors, underpayments | Perform audits to identify billing issues, improve claim accuracy, and prevent revenue loss before the 2027 transition |
Practices should also monitor OB/GYN A/R aging to identify delayed payments, unresolved denials, and other revenue-cycle problems.
Conclusion
The 2027 OB/GYN CPT changes will significantly impact how maternity services are documented and billed. While practices continue using traditional global maternity codes such as 59400 and 59510 in 2026, preparation is essential for the shift toward more detailed reporting of prenatal care, labor management, delivery, and postpartum services.
A successful transition requires accurate documentation, updated EHR workflows, trained billing teams, correct CPT selection, and proper modifier usage. Early preparation can help OB/GYN practices reduce denials, maintain compliance, and protect revenue.
