End of Global OB Codes in CPT 2027: AMA’s New Maternity Care Billing Rules

Maternity care in the United States has evolved significantly over the past few decades, but the coding system used to report and bill these services has remained largely unchanged. The existing Current Procedural Terminology (CPT®) framework, built on global obstetric codes since the mid-1990s, bundles services across the entire pregnancy, an approach that no longer reflects the complexity and variability of modern care delivery.

 

Effective January 1, 2027, CPT codes for maternity care will reflect modern practice by capturing how, when, where, and by whom services are delivered. This restructuring allows the full spectrum of individualized care to be represented accurately, supporting improved tracking, transparency, and documentation across the healthcare system.

Developed in collaboration with the American Medical Association (AMA), the American College of Obstetricians and Gynecologists (ACOG), and the CPT Editorial Panel, the update also provides guidance for health plans and payers preparing to implement policy. Key areas of focus include the rationale behind the changes, the new coding framework, and considerations for future implementation.

2027 OB Global Sunset: ACOG recommends transition planning now with modifier TH

Core Structural Shift in Global OB Codes Medical Billing System 

A central component of the 2027 CPT restructuring is the transition from a bundled payment model to a more granular, itemized approach. 

From Bundled to Itemized Model, Old System

Under the existing system since 2026, global OB codes group all services provided throughout the pregnancy into a single package, covering the entire care continuum from prenatal visits to delivery and postpartum care.

The revised framework moves away from this model by introducing itemized coding, where individual services are reported and billed separately. This shift enables more precise documentation of the specific care delivered at each stage of pregnancy, rather than aggregating all services under one code. As a result, the coding structure better reflects the scope and variability of modern maternity care.

Elimination of Global Codes

As part of this overhaul, the traditional global maternity codes are being completely removed. They are replaced with:

• Evaluation & Management (E/M) codes for routine prenatal and postpartum visits
• Stage-specific CPT categories that reflect distinct phases of care

Pregnancy Stage-Based Framework

The new structure explicitly captures each phase of maternity care, including:

• Antepartum (prenatal phase)
• Labor management
• Delivery
• Postpartum care

This framework ensures that services are coded according to when, where, and by whom care is provided, providing a more accurate and transparent representation of modern obstetric practice.

Rationale Behind the Global OB Codes in CPT 2027 Changes

The CPT 2027 updates address several key limitations of the existing global coding system, aligning documentation and billing with the realities of contemporary maternity care.

Mismatch with Modern Care Delivery

Global obstetric codes no longer reflect the complexity and variability of current practice. Pregnancy services are increasingly delivered by multidisciplinary teams, including OBGYNs, certified nurse midwives, laborists, and postpartum specialists. These providers collaborate across multiple phases of care, antepartum, labor, delivery, and postpartum, often in different clinical settings. Global codes cannot adequately capture these individualized contributions.

Multi-Location and Transitional Care

High-risk patients frequently transition between facilities, such as from rural hospitals to specialized centers, making bundled codes insufficient for tracking care across sites. The new framework allows providers to document and bill for each service rendered, ensuring continuity and transparency.

Expanded Scope of Services

Modern obstetric care includes a wide range of services beyond traditional visits, including screenings (mental health, social determinants), counseling (genetic, nutrition, vaccines), patient education for self-monitoring, and group prenatal programs. The itemized coding system enables separate reporting for these services, improving accuracy and reimbursement alignment.

Specialty Group Input

OBGYN and related specialty groups have long advocated for coding that reflects the complexity of contemporary maternity care. The AMA’s restructuring acknowledges these concerns while aiming to support standardized, transparent reporting across the healthcare system.

Detailed Billing & Coding Changes For Global OB Codes in 2027

The 2027 CPT update introduces a comprehensive framework for reporting and billing maternity care, ensuring that each service is accurately documented and reimbursed.

Separate Billing for Ancillary and Support Services

Services that were previously bundled within global codes can now be billed individually. These include:

• Screening: depression, social determinants of health
• Counseling: genetic, vaccination, nutrition
• Other services: group prenatal care, patient education for self-monitoring (blood pressure, glucose, weight), and additional supportive interventions

This approach allows physicians to capture the full scope of care delivered to each patient.

Use of Evaluation & Management (E/M) Codes

Providers can now use the full range of E/M codes (99202–99499) for all prenatal and postpartum visits, facilitating more precise documentation and billing for routine patient encounters.

Modifier Usage

The HCPCS modifier “TH” should be appended to E/M codes to clearly indicate that a visit is related to prenatal or postpartum care. This ensures proper classification and billing across different payer systems.

Delivery Coding Structure

Delivery-only CPT codes (59409, 59514, 59612, 59620) encompass:

• Labor management from admission
• Delivery
• Completion of postpartum orders
• Birth certificate documentation

Services provided at or near the time of delivery, such as long-acting reversible contraception, should be billed separately and are not included in these delivery codes.

Labor Spanning Multiple Days or Facilities

For labor management occurring on different calendar days, or in multiple facilities on the same day as delivery, inpatient E/M codes (99221–99223, 99231–99233, 99234–99236, 99238–99239) should be used. This allows multiple hospitals and providers to independently bill for the services they deliver, particularly in cases of patient transfers or prolonged labor.

Multigestational Deliveries

For twins or other multiple births, multiple units of delivery-only codes should be reported, with the -51 modifier applied to subsequent deliveries. This ensures each birth is accurately documented and reimbursed.

Stay Ahead of CPT 2027 Updates – BillingFreedom Ensures Accurate, Compliant, and Efficient OB-GYN Billing

At BillingFreedom, our expert team specializes in OBGYN medical billing services, navigating complex maternity billing landscapes, including the comprehensive updates introduced in the CPT 2027 restructuring. With global codes being replaced by stage-specific and itemized coding for antepartum, labor, delivery, and postpartum care, staying current is critical to ensuring accurate documentation, optimal reimbursement, and compliance with payer regulations.

Real-Time Expertise and Continuous Updates

Our team maintains real-time awareness of all CPT changes, E/M code utilization guidelines (99202–99499), and modifier applications such as “TH” for prenatal and postpartum visits. This continuous update process ensures that every service, from screenings and counseling to labor management and multigestational deliveries,is accurately captured in claims submissions. By understanding the nuances of service transitions across multiple facilities and providers, we minimize coding errors and prevent denials.

Proven Accuracy and Efficiency

BillingFreedom’s technical approach emphasizes precision at every stage of billing:

• Accuracy rate: >98.85% on maternity care claims
• Denial rate: <1%, significantly below industry averages
• Accepted billing process rate: consistently >98%

These metrics reflect our ability to implement the 2027 CPT changes seamlessly, ensuring each service component is reported individually, supporting both compliance and maximized revenue capture.

Revenue Optimization Through Precision Coding

By accurately itemizing services and correctly applying stage-specific codes, providers can realize measurable increases in reimbursement without inflating service utilization. Our clients' experience:

• Optimized billing for ancillary and supportive services
• Proper documentation for labor spanning multiple days or facilities
• Accurate reporting for multigestational deliveries with appropriate modifiers

This structured approach not only enhances revenue but also strengthens payer relationships by reducing denials and appeals.

Prepared for the Future

With BillingFreedom’s expertise, practices can confidently transition to the new CPT 2027 framework. We proactively adapt to code updates and interpret nuanced changes, ensuring that each claim is fully compliant and reflective of the care delivered. For healthcare providers, this translates into:

• Reduced administrative burden
• Improved claim acceptance
• Transparent, auditable billing records
• Sustained revenue growth aligned with modern obstetric practice

By partnering with BillingFreedom, physicians and maternity care teams can focus on clinical excellence while we ensure that every service, no matter how complex or multidisciplinary, is captured, coded, and reimbursed with maximum efficiency and accuracy.

For more details about our exceptional OB/GYN billing services, please don't hesitate to contact us via email at info@billingfreedom.com or call us at +1 (855) 415-3472. 

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