The most significant overhaul of obstetric billing codes in 30 years takes effect on January 1, 2027 — and OB-GYN practices that wait until December to prepare will be in serious trouble.
The American Medical Association (AMA) CPT Editorial Panel has officially approved a complete restructuring of maternity care services codes for CPT 2027. In partnership with the American College of Obstetricians and Gynecologists (ACOG), the AMA has spent nearly two years redesigning a coding system that has been largely unchanged since the mid-1990s.
The result: 17 codes deleted. 12 new codes added. 6 codes revised. And the end of the global OB package as we know it.
This post breaks down exactly what is changing, why it matters, and the specific actions your practice needs to take — starting now, in 2026 — to protect your revenue cycle when the calendar turns.
global OB bundles
billing codes
& guidelines
The Core Shift
Why Are These Codes Changing?
The short answer: obstetric medicine today looks nothing like it did in 1995 when the global bundled codes were introduced.
The current system bundles all maternity care — antepartum visits, labor management, delivery, and postpartum care — into a single “global” code (59400 for vaginal delivery, 59510 for cesarean). This model made sense when one physician followed a patient through an uncomplicated pregnancy with 13 routine prenatal visits, delivered the baby, and handled the six-week postpartum check. That picture rarely describes reality today.
Modern obstetric care involves:
Team-based, distributed care delivery. Multiple care teams, often unaffiliated with each other, manage a single patient across antepartum, labor, delivery, and postpartum phases. The old global code cannot capture this complexity or attribute care accurately.
High-risk transfers. Patients are frequently transferred mid-pregnancy or mid-labor from rural hospitals to tertiary facilities. The bundled global codes simply cannot reflect care that spans institutions.
Tailored prenatal schedules. ACOG’s 2025 guidance (Tailored Prenatal Care Delivery) introduced individualized care plans based on medical, social, and structural factors — not the traditional 13-visit schedule. The new coding structure aligns with this evidence-based approach.
Rising postpartum complexity. Most maternal deaths occur in the postpartum period — driven by hemorrhage, cardiac events, and mental health conditions. When postpartum care is buried in a global bundle, there is no financial mechanism that encourages thorough follow-up. The new codes fix that by allowing postpartum visits to be billed and tracked separately.
Telehealth integration. Remote monitoring, telehealth prenatal visits, and home-based postpartum care are now standard. The old codes were built before any of this existed.
What Exactly Is Changing: A Phase-by-Phase Breakdown
- All prenatal visits billed per encounter — no bundle
- Use E/M codes 99202–99499
- Append modifier TH to identify maternity visits
- Office, hospital, or telehealth — E/M location rules apply
- No fixed visit count — tailored care approach
- Current codes 59425 & 59426 deleted
- Daily reporting — once per calendar date
- Separate codes for Initial Day and Subsequent Days
- Two complexity levels: Straightforward or Complex
- Initial day reported once per admission per provider
- Similar reporting rules to inpatient hospital care
- Captures long or high-complexity labors fairly
- Procedure-only code — separate from labor
- Vaginal delivery (± episiotomy)
- VBAC — vaginal birth after cesarean
- Primary C-section & Repeat C-section
- New codes for 3rd- and 4th-degree laceration repair
- New standalone code: hysterectomy post-C-section
- All postpartum codes deleted — bill with E/M codes
- Routine care on delivery day included in delivery code
- Inpatient days after delivery: subsequent hospital care codes
- Discharge: standard discharge management code
- New procedure code: uterine tamponade
- Creates financial incentive for thorough follow-up
1. Antepartum Care — Move to Per-Encounter E/M Reporting
This is perhaps the biggest shift in daily workflow for most OB practices.
All current antepartum care codes — 59425 (4–6 visits), 59426 (7+ visits), and the antepartum portions of global codes 59400 and 59510 — will be deleted.
Beginning January 1, 2027, every antepartum visit will be billed individually using standard E/M codes (99202–99499), based on:
- Medical decision-making complexity
- Time spent
- Location of care (office, hospital outpatient, or telemedicine)
This means each prenatal encounter gets its own claim. The visit count model goes away entirely.
Key point for coders: The current E/M rules fully apply. Documentation must support the level of service billed, just as it would for any other outpatient visit.
2. Labor Management — New Daily Reporting Structure
Labor management gets a brand new coding category with codes structured for daily reporting — similar to how inpatient hospital care (99221–99233) works today.
The new structure includes:
- Initial Day of Labor Management — reported once per facility admission per physician (unless there is a unique provider change)
- Subsequent Days of Labor Management
- Each category is further divided into two complexity levels: Straightforward (SF) and Complex
This unbundling finally gives practices a mechanism to capture the true intensity of long or complicated labors. A 30-hour labor with multiple physician evaluations can now be coded to reflect what actually happened — not lumped into a flat global rate.
3. Delivery — Streamlined, Procedure-Only Codes
The delivery codes are being restructured to represent the delivery event itself, entirely separate from labor management (which is now billed daily as above).
New streamlined delivery codes cover:
- Vaginal delivery (with and without episiotomy)
- VBAC (vaginal birth after cesarean)
- Primary cesarean delivery
- Repeat cesarean delivery
Additionally, brand-new distinct procedure codes are being added for:
- Third-degree laceration or episiotomy repair
- Fourth-degree laceration or episiotomy repair
- Hysterectomy following cesarean delivery (now a standalone code)
These additions address a long-standing gap — complex repair and emergency procedures at delivery were previously underreported or bundled without clear billing pathways.
4. Postpartum Care — Per-Encounter E/M, Facility Rules Apply
Like antepartum care, all postpartum codes are being deleted. Postpartum care will be billed using E/M codes per encounter.
The structure:
- Routine postpartum care on the same calendar day as delivery is included in the delivery code — no separate postpartum charge on delivery day
- For facility (inpatient) births, subsequent hospital care codes are used for each management day after delivery, until discharge
- A new, distinct procedure code has been added for uterine tamponade
This change should have a meaningful impact on postpartum follow-up rates. When every postpartum visit generates a separately billable claim, practices have both the documentation requirement and the financial incentive to ensure patients are actually seen — and that those visits are appropriately documented.
Complete List of Code Changes
Deleted Codes (17 total)
59050, 59400, 59409, 59410, 59425, 59426, 59430, 59510, 59514, 59515, 59525, 59610, 59612, 59614, 59618, 59620, 59622
New Codes (12 total)
59080, 59081, 59082, 59083, 59431, 59432, 59433, 59434, 59502, 59503, 59504, 59623
Revised Codes (6 total)
59051, 59300, 59412, 59414, 59898, 59899
The full code descriptors and updated guidelines are available for download directly from the AMA at: ama-assn.org/practice-management/cpt/cpt-2027-maternity-care-services-code-changes
What About Reimbursement — Will Revenue Go Up or Down?
This is the question every practice administrator is asking.
The AMA’s RVS Update Committee (RUC) conducted a survey of over 650 obstetricians, family medicine physicians, and nurse midwives in late 2025 to measure the time and intensity of the new services. Those recommendations were submitted to CMS in February 2026.
The official CMS timeline:
- July 2026 — CMS proposes relative values for the new codes in the proposed physician fee schedule rule
- 60-day comment period — open for public and specialty society input
- November 2026 — Final relative values published
- January 1, 2027 — New values implemented
The RUC analysis indicates the restructuring is expected to be budget neutral in aggregate — meaning the total RVUs across the new code set should approximate the total RVUs of the former bundled codes. However, “budget neutral in aggregate” does not mean revenue-neutral for every practice. High-volume, low-risk practices may see different impacts than those managing complex, high-risk pregnancies — who are likely to see improved capture.
The most important RCM action is to monitor the July 2026 proposed fee schedule rule carefully and submit comments if your specialty society does. Final values are not set until November.
2026 Transition: What You Need to Do Right Now
Aug 2026
- Audit your global OB billing volume by payer — know your revenue exposure
- Identify top 5–10 payers and contact them about their CPT 2027 transition plan
- Begin training billing staff on per-encounter E/M coding for antepartum visits
- Download the AMA CPT 2027 maternity care guidelines PDF and brief your clinical team
- Attend the AMA coding primer webinar (June 2, 2026) — review the recording with your team
2026
- Start appending HCPCS modifier TH to all antepartum E/M claims
- Add Z3A.xx (weeks of gestation) as secondary diagnosis on every OB claim
- Bill late-2026 antepartum visits using E/M codes now — these patients will deliver in 2027 when global codes no longer exist
- Do not use old antepartum bundle codes (59425, 59426) for visits after this date
2026
- CMS publishes proposed RVUs for new maternity care codes in the physician fee schedule rule
- Review the proposed values carefully — the 60-day public comment period begins here
- Coordinate with your specialty society (ACOG, AAFP) on any comments to submit
2026
- CMS publishes final RVUs in the physician fee schedule — update your chargemaster
- Work with your EHR vendor to build new documentation templates for labor management (Straightforward vs. Complex)
- Run a mock billing cycle using the new code structure — stress-test before go-live
- Confirm payer contracts and fee schedules are loading the new codes — follow up proactively
2027
- All new CPT 2027 maternity care codes are effective
- Global OB codes (59400, 59510, etc.) are no longer valid — claims using them will deny
The AMA released these codes early — well ahead of the standard schedule — precisely because the implementation burden is massive. EHR vendors need time to build new templates. Payers need time to load new fee schedules. Billing teams need training.
Here is a practical action plan for the remainder of 2026:
Now through August 2026
- Audit your current global OB billing volume by payer. Know your revenue exposure before the switch.
- Identify your top 5–10 payers and contact them about their transition timelines and TH modifier acceptance policy.
- Begin training billing staff on per-encounter E/M coding for antepartum and postpartum visits.
- Download the AMA’s code and guideline PDF and review the new labor management framework with your clinical staff.
By September 1, 2026 (ACOG-recommended deadline)
- Begin appending HCPCS modifier TH to antepartum E/M claims to signal maternity-related visits to payers.
- Always add Z3A.xx (weeks of gestation) as a secondary diagnosis on every obstetric claim — this becomes even more critical under per-encounter billing.
- For patients presenting for first antepartum visits in late 2026 who will deliver in 2027 — bill those 2026 visits using E/M codes now, not the old antepartum bundle codes that will be deleted.
Q3–Q4 2026
- Work with your EHR vendor to build documentation templates that support the new labor management complexity levels (Straightforward vs. Complex).
- Run a mock billing cycle using the new code structure to stress-test your workflow before go-live.
- Confirm payer contracts and fee schedules are being updated. Do not assume payers will be ready on January 1 — follow up proactively.
- Attend the AMA’s CPT coding primer webinar (June 2, 2026) and ensure your coding team reviews the recording.
The Bigger Picture: Why This Is Good for Maternal Health
Beyond billing mechanics, it is worth stepping back to appreciate what this restructuring is trying to accomplish.
The United States has one of the highest maternal mortality rates among high-income countries, and a disproportionate share of those deaths occur in the postpartum period — from hemorrhage, cardiac complications, and untreated mental health conditions. The old global code bundled all postpartum care into a flat payment that offered no visibility and no incentive for thorough follow-up.
The new per-encounter postpartum billing model creates a data trail. Payers will be able to see whether patients are actually receiving postpartum visits. Quality metrics can be tied to specific postpartum encounters. Practices that invest in postpartum care will be able to demonstrate and bill for that investment.
For rural practices and those managing high-risk populations, the ability to bill labor management daily by complexity is particularly meaningful. A 48-hour labor with complications is not the same service as a 4-hour uncomplicated delivery — and for the first time in 30 years, the CPT code set will reflect that difference.
LMP
1st visit
TH start
Delivery
| Date of Service | CPT Code | Description | Rule | Est. Fee |
|---|---|---|---|---|
| 2026 — Before Sep 1: bill as usual | ||||
| May 14 – Aug 30, 2026 | 59425 or E/M | Visits 1–6 antepartum Already billed as 59425? Leave as-is — do not recode |
2026 rules | $780 |
| 2026 — From Sep 1: switch to E/M + Modifier TH | ||||
| Sep 1 – Dec 30, 2026 | 99214 ×4 | Visits 7–10 antepartum E/M, office Modifier TH required |
ACOG Sep 1 | $560 |
| 2027 — All CPT 2027 rules from January 1 | ||||
| Jan 3, 2027 | 99213 | Final antepartum visit (39 weeks) Modifier TH CPT 2027 |
CPT 2027 | $90 |
| Jan 8, 2027 | 59502 | Labor management — initial day, straightforward New code |
CPT 2027 | $210 |
| Jan 8, 2027 | 590XX | Vaginal delivery New delivery code |
CPT 2027 | $480 |
| Jan 22 + Feb 19, 2027 | 99213 ×2 | Postpartum visits (2-week + 6-week) Separately billable |
CPT 2027 | $180 |
LMP
1st visit
TH start
C-section
| Date of Service | CPT Code | Description | Rule | Est. Fee |
|---|---|---|---|---|
| 2026 — Jul 22 to Aug 31 (before Sep 1 cutover) | ||||
| Jul 22 – Aug 28, 2026 | 99213 ×2 | Visits 1–2: early antepartum Bill normally — no TH yet |
2026 rules | $180 |
| 2026 — Sep 1 to Dec 31 (after ACOG deadline) | ||||
| Sep 3 – Dec 10, 2026 | 99214 ×4 | Visits 3–6: standard antepartum monitoring Modifier TH required |
ACOG Sep 1 | $560 |
| 2027 — All CPT 2027 | ||||
| Jan 7 – Feb 25, 2027 | 99214 ×5 | Visits 7–11: antepartum, breech management Modifier TH |
CPT 2027 | $700 |
| Mar 4 + Mar 10, 2027 | 99215 ×2 | Pre-op visits: ECV attempt + pre-surgical review Modifier TH |
CPT 2027 | $330 |
| Mar 11, 2027 | 59503 | Primary cesarean delivery New CPT 2027 code |
CPT 2027 | $680 |
| Mar 12–13, 2027 | 99232 ×2 | Inpatient hospital care days 2 & 3 post-C-section Daily billing |
CPT 2027 | $280 |
| Mar 25 + Apr 22, 2027 | 99213 ×2 | Postpartum: 2-week wound check + 6-week exam | CPT 2027 | $180 |
LMP
1st visit
Delivery
| Date of Service | CPT Code | Description | Rule | Est. Fee |
|---|---|---|---|---|
| 2026 — All 3 visits fall after Sep 1, so TH required from day 1 | ||||
| Oct 1, Nov 6, Dec 4, 2026 | 99213 ×3 | Antepartum visits 1–3 (8w, 14w, 20w) Modifier TH on all 3 All after Sep 1 |
ACOG Sep 1 | $270 |
| 2027 — Office + telehealth visits, all CPT 2027 | ||||
| Jan 8, Feb 5, Mar 5, Apr 2, 2027 | 99213 ×4 | In-office antepartum visits (24w–36w) Modifier TH |
CPT 2027 | $360 |
| Jan 22, Feb 19, Mar 19, Apr 16, 2027 | 99213 ×4 POS 02 | Telehealth antepartum visits — Place of Service 02 Modifier TH Telehealth supported |
CPT 2027 | $320 |
| May 8 + May 22, 2027 | 99214 ×2 | Late antepartum visits (38w, 40w) Modifier TH |
CPT 2027 | $280 |
| May 29, 2027 | 59502 + 590XX | Labor management (initial, straightforward) + vaginal delivery | CPT 2027 | $690 |
| Jun 12 + Jul 10, 2027 | 99213 ×2 | Postpartum: 2-week + 6-week visits | CPT 2027 | $180 |
LMP
1st visit
VBAC
| Date of Service | CPT Code | Description | Rule | Est. Fee |
|---|---|---|---|---|
| 2026 — Both visits after Sep 1 so TH required | ||||
| Nov 20 + Dec 18, 2026 | 99213 ×2 | Initial OB + 10-week visit Modifier TH — both after Sep 1 |
ACOG Sep 1 | $180 |
| 2027 — All cleanly under CPT 2027 | ||||
| Jan–Apr 2027 ×7 | 99213 ×7 | Antepartum visits 3–9 (standard monitoring) Modifier TH |
CPT 2027 | $630 |
| May–Jul 2027 ×4 | 99214 ×4 | Late antepartum (VBAC counseling, informed consent, monitoring) Modifier TH |
CPT 2027 | $560 |
| Jul 22, 2027 | 59504 | Labor management — initial day, Complex (VBAC trial of labor) | CPT 2027 | $340 |
| Jul 22, 2027 | 59081 | VBAC delivery — dedicated new code New VBAC code 59610 deleted |
CPT 2027 | $520 |
| Aug 5 + Sep 2, 2027 | 99213 ×2 | Postpartum visits | CPT 2027 | $180 |
LMP
1st visit
Delivery
| Date of Service | CPT Code | Description | Rule | Est. Fee |
|---|---|---|---|---|
| All care in 2027 — standard CPT 2027 billing throughout | ||||
| Jan 28 – Apr 2027 ×7 | 99213 ×7 | Antepartum visits 1–7 (8w through 24w) Modifier TH on each |
CPT 2027 | $630 |
| May–Sep 2027 ×6 | 99214 ×6 | Antepartum visits 8–13 (28w through 39w) Modifier TH on each |
CPT 2027 | $840 |
| Sep 19, 2027 | 59502 | Labor management — initial day, straightforward | CPT 2027 | $210 |
| Sep 19, 2027 | 590XX | Vaginal delivery | CPT 2027 | $480 |
| Sep 19, 2027 | 590XX-4th | Fourth-degree laceration repair — new standalone CPT 2027 code Dedicated code |
CPT 2027 | $320 |
| Oct 3 + Nov 14, 2027 | 99213 ×2 | Postpartum: 2-week + 6-week visits | CPT 2027 | $180 |
Key Takeaways
- The global OB codes (59400, 59510, etc.) are being eliminated effective January 1, 2027
- All antepartum and postpartum visits shift to per-encounter E/M billing
- Labor management becomes daily reporting with Straightforward and Complex levels
- Delivery codes are streamlined as procedure-only codes, separate from labor management
- New standalone codes added for third- and fourth-degree laceration repair, post-cesarean hysterectomy, and uterine tamponade
- The September 1, 2026 date is the critical milestone — begin using E/M codes with modifier TH for antepartum visits by then
- CMS proposes relative values in July 2026; final values publish in November 2026
- This is budget-neutral in aggregate, but individual practice impact will vary
Resources
- AMA CPT 2027 Maternity Care Services — Official Page
- Download: CPT 2027 Codes and Guidelines for Maternity Care (PDF)
- Download: Antepartum Transition Reporting Education Brief (PDF)
- ACOG Payment for Obstetric Services
Need help preparing your OB-GYN practice for the 2027 billing transition? At ClaimsXperts, our team specializes in specialty-specific RCM with deep experience in obstetric and gynecologic billing. Contact us at rcmmasters.com to discuss how we can help your practice navigate this change without revenue disruption.
Tags: CPT 2027, OB-GYN billing, maternity care codes, global obstetric codes, antepartum coding, labor management codes, postpartum billing, AMA CPT changes, medical coding 2027, obstetric RCM
