Global Maternity Billing Services

Why global maternity billing needs a specialist

Most specialties bill a visit, get paid for the visit, and move on. Obstetrics doesn't work that way. A routine pregnancy is billed as a single global package that covers months of care — often 10 to 15 antepartum visits, the delivery, and roughly six weeks of postpartum follow-up — and the claim usually isn't submitted until after the baby is born.

That structure creates a long list of places where revenue can quietly disappear:

• Antepartum visits are never counted, so nobody notices when a patient transfers out after seven visits and the practice bills nothing.
• A patient's insurance changes at 26 weeks and the whole package is billed to the new carrier, which denies it.
• A vaginal birth after cesarean is billed as 59400 instead of 59610.
• The delivery claim is missing the Z37 outcome-of-delivery code or the Z3A weeks-of-gestation code and gets rejected.
• Separately billable services — ultrasounds, non-stress tests, visits for complications — are assumed to be "in the global" and never charged.

In more than eight years of billing for women's health practices, we've found that global maternity problems are rarely one big mistake. They're a pattern of small, repeatable misses. Our job is to build a process that catches them on every pregnancy.

The global obstetric codes (valid through December 31, 2026)

Until the 2027 code set takes effect, obstetric care is reported with a family of package codes and component codes. Choosing the right one depends on who provided which parts of the care and how the baby was delivered.

Component codes for care outside a full package:

• 59425 — antepartum care only, 4–6 visits
• 59426 — antepartum care only, 7 or more visits
• 59430 — postpartum care only
• 1–3 antepartum visits — reported with office E/M codes rather than an antepartum package

The delivery-type columns matter. A successful VBAC billed as a routine vaginal delivery, or a trial of labor that ends in cesarean billed as a planned cesarean, is a coding error even if the payment difference looks small on one claim. Repeated across a year of deliveries, it adds up — and it's exactly the kind of pattern payers look for.

What the global package includes — and what it doesn't

Knowing the boundaries of the package is where much of the recoverable revenue lives.

Generally included in the global fee:

• Initial and subsequent antepartum history and physical exams
• Routine visits (typically monthly to 28 weeks, every two weeks to 36 weeks, then weekly)
• Recording weight, blood pressure and fetal heart tones, and routine chemical urinalysis
• Admission history and physical, management of uncomplicated labor, and the delivery
• Routine postpartum hospital care and the postpartum office visit(s)

Generally billed separately:

• Obstetric ultrasounds (76801–76817) and fetal non-stress tests (59025)
• Laboratory testing and amniocentesis
• E/M visits for conditions unrelated to the pregnancy, or for complications that go beyond routine care — supported by the appropriate ICD-10-CM O-codes
• Procedures such as external cephalic version (59412) and, depending on the payer, certain postpartum procedures

Payers don't all draw the lines in the same place. Medicaid managed care plans in particular publish their own obstetric billing policies — some require a notification or a first-visit claim with modifier TH, others want antepartum visits billed as they happen. We maintain payer-specific rules so the claim is built the way each plan expects.

Split care, transfers and insurance changes

A large share of OB revenue problems come from pregnancies that don't follow the textbook path. These are the situations we handle every week:

The patient transfers in or out

If a patient moves to another practice after six antepartum visits, your practice bills 59425 for the care you provided. If she transfers in at 30 weeks and you deliver, you may bill antepartum visits by component and the delivery with a delivery-plus-postpartum code — not the full global. We document the visit count and transfer date so the coding holds up to review.

The insurance changes mid-pregnancy

When coverage changes, the global package usually can't go to either plan. Antepartum care is billed to the plan that was active when it was provided, and the delivery and postpartum care go to the plan active at delivery. We verify eligibility at every trimester, not just at the first visit, so coverage changes are caught early instead of after a denial.

Group practices with multiple delivering providers

When physicians in the same group share prenatal care and a different physician delivers, the package is typically billed once by the group under the delivering provider, consistent with the payer's rules. Where a physician from a different group performs the delivery, each group bills only its own components.

Pregnancy loss or early termination of care

When a pregnancy ends before delivery, the antepartum care you provided is still billable — with E/M codes or 59425/59426, depending on visit count. Practices often write these off without realizing they can be billed.

Diagnosis coding on obstetric claims

Procedure codes get most of the attention, but a large number of obstetric rejections are diagnosis problems. We check every OB claim for:

• Chapter 15 O-code sequencing. Pregnancy-related codes from Chapter 15 take sequencing priority, and the principal diagnosis should reflect the main reason for the encounter. Our ICD-10 O codes guide explains the rules.
• Z37 outcome of delivery on every delivery claim.
• Z3A weeks of gestation where required.
• O80 used correctly — only for a full-term, uncomplicated single liveborn delivery, and never alongside other Chapter 15 codes.
• Z34 vs O09 — normal pregnancy supervision versus supervision of a high-risk pregnancy, which affects both coverage and medical-necessity edits.

Multiple gestation, complications and modifier 22

Twins and higher-order multiples are billed differently by payer. A common approach for a vaginal delivery of twins is the global code for the first baby and a delivery-only code with a multiple-procedure or distinct-procedure modifier for the second; when both are delivered by cesarean, a single cesarean code with modifier 22 and supporting documentation is often expected. Unusually complex deliveries may also justify modifier 22 — but only with an operative or delivery note that clearly describes the additional work. We review the documentation before the modifier goes on the claim, because unsupported 22 modifiers are an easy audit target.

Getting ready for the 2027 maternity code transition

On January 1, 2027, the CPT code set deletes the global maternity package. According to the AMA, the maternity section changes include 17 deleted codes, 12 new codes and 6 revised codes. Antepartum and postpartum visits will be reported with E/M codes, and new codes report labor management (59080–59083) and delivery (59431, 59432, 59502, 59503, 59504).

That's a fundamental shift: instead of one claim at the end of the pregnancy, practices will bill throughout it. Charge capture, front-desk workflows, provider documentation and payer contracts that reference the global fee will all need attention. Our 2027 maternity transition guide walks through the details, and we're helping practices plan for pregnancies that span the change — patients seen in late 2026 who deliver in 2027.

How we run global maternity billing for your practice

1. Pregnancy registry. Every OB patient is logged at the first visit with payer, estimated delivery date and provider of record. Visit counts update as care continues.
2. Trimester eligibility checks. Coverage is re-verified so insurance changes are caught before delivery.
3. Delivery claim review. Before submission we confirm delivery type, VBAC status, multiples, assistant surgeon rules, and the full diagnosis set.
4. Separately billable services. Ultrasounds, NSTs, complication visits and procedures are charged when performed, with the correct diagnosis linkage.
5. Follow-up and appeals. Denied OB claims are corrected or appealed with the documentation payers ask for — not resubmitted blindly.
6. Reporting you can read. Open pregnancies, unbilled deliveries, and denials by reason, in a monthly summary.

We also handle the rest of the revenue cycle for OB/GYN practices — see our revenue cycle management, denial management and GYN surgery coding services.

Start with a free global maternity billing audit

You don't need to fill out a form or sign anything. Send us a WhatsApp message and we'll review a sample of your recent OB deliveries and antepartum claims. We'll show you any unbilled components, coding issues or payer patterns we find, and you're free to use the findings however you like. If you'd rather estimate the numbers first, try our revenue leakage calculator.