OB Global Package Billing: 59400, 59510, 59610 and When to Unbundle

The global maternity package, defined in the CPT surgery/maternity-care guidelines, bundles three phases of routine care under one code reported once after delivery. Knowing exactly what falls inside the package — and what falls outside it — is the entire game in OB billing.

1. Antepartum (prenatal) care. The global assumes a standard course of routine prenatal care: the initial and subsequent history and physical exams; recording of weight, blood pressure, and fetal heart tones; routine chemical urinalysis; and monthly visits up to 28 weeks, biweekly to 36 weeks, then weekly until delivery. A normal pregnancy runs about 13 routine antepartum visits.

2. Delivery. Hospital admission, the admission history and physical, management of uncomplicated labor, and the delivery itself — vaginal or cesarean — including episiotomy and forceps where applicable.

3. Postpartum care. Routine outpatient and inpatient postpartum visits, typically through the standard postpartum period (commonly six weeks).

What is NOT in the global package (separately billable when documented and supported):

• Screening labs (CBC, blood typing, glucose tolerance, group B strep) and ultrasounds (76801–76817).
• Visits for problems unrelated to the pregnancy, or high-risk antepartum management beyond routine care.
• Fetal non-stress tests (59025), amniocentesis, external cephalic version, and other distinct procedures.
• Circumcision of the newborn (54150/54160) — a separate patient, separate claim.

The central rule: routine antepartum visits are bundled and must not be billed separately when you intend to bill the global at the end. The most common OB billing leak is billing prenatal E/M visits along the way and then also billing 59400 — double-billing the antepartum component, which generates denials and overpayment-recovery exposure.

There are four global maternity codes, distinguished by route of delivery and VBAC status. Each bundles antepartum + delivery + postpartum; the only difference is the delivery type they assume.

Choosing between 59610 and 59618 is the most common VBAC error. Both apply to a patient with a prior cesarean. Use 59610 only when the VBAC succeeds — the patient actually delivers vaginally. Use 59618 when the patient attempts a trial of labor after cesarean (TOLAC) but the attempt fails and a repeat cesarean is performed. Do not use 59510 for a planned repeat cesarean preceded by an attempted VBAC; 59618 exists specifically for that scenario. A planned repeat cesarean with no trial of labor is coded 59510.

Multiple gestation (twins, triplets). CPT does not provide separate global codes for multiples. The common conventions: bill the global for the first baby, then the delivery-only code for the second (e.g., 59409 vaginal delivery-only or 59514 cesarean delivery-only) with modifier 51 — but this varies significantly by payer, so confirm the payer's multiple-gestation policy before submission. Many commercial payers and Medicaid programs publish specific twin-delivery billing instructions; bill to the policy, not to a default.

You bill the global package only when a single practice (or group reporting under the same Tax ID) provides all three components — antepartum, delivery, and postpartum. The moment that is not true, the global must be broken into its component parts. These are the trigger conditions:

1. The patient transfers care or you inherit a transferred patient. If OB Practice A provides early prenatal care and OB Practice B delivers, neither can bill the global. Practice A bills the antepartum portion it provided; Practice B bills delivery (and postpartum, if it provides it).

2. The antepartum visit count falls outside the global's assumption. The global assumes the full routine course of about 13 visits. If your practice provided only a partial course, you bill antepartum-only codes by visit count rather than the global.

3. A different provider/group delivered the baby. Even within a covering relationship, if the delivering provider is under a different Tax ID, the components split.

4. The pregnancy ends before delivery (miscarriage, elective termination, ectopic) — the global never applies; bill the antepartum care actually provided plus the appropriate procedure code.

5. The patient's insurance changes mid-pregnancy. Payer A covers part of the antepartum course, Payer B covers the rest plus delivery. Each payer is billed only for the care it covered — the global cannot span two payers.

The component codes are:

Note the antepartum tiering precisely: 1–3 visits → E/M; 4–6 visits → 59425 (one unit, billed once); 7 or more visits → 59426 (one unit, billed once). 59425 and 59426 are each reported a single time for the whole block of visits, not per visit — billing 59425 multiple times is a frequent error that triggers duplicate denials. In our OB billing reviews, split-care scenarios — patient transfers, mid-pregnancy insurance changes, and partial antepartum courses — are where the most revenue quietly leaks, because the global gets billed by reflex when the components should have been split.

When your practice provides prenatal care but not the delivery, the number of antepartum visits dictates the code — and getting the tier wrong is one of the most common OB coding mistakes.

1–3 antepartum visits → bill individual E/M codes. With three or fewer visits, you do not use the antepartum package codes at all. Each visit is billed as its own office/outpatient E/M (99202–99215) at the level supported by documentation. This is the rule most often missed — practices reach for 59425 with two visits and get denied.

4–6 antepartum visits → 59425. Report 59425 once for the entire block of 4 to 6 visits. It is not per visit. The date of service is generally the date of the last antepartum visit in the block (payer policies vary on whether to use a span or the last date).

7 or more antepartum visits → 59426. Report 59426 once for the full block of 7+ visits. Again, a single unit covers the whole antepartum course your practice provided.

Documentation for 59425/59426 must show the dates and content of each antepartum visit in the block — the medical record needs to substantiate the visit count being claimed, because payers can and do request the prenatal flow sheet on audit. A 59426 claim with only five documented visits will be downcoded or denied.

Postpartum-only (59430) follows the same single-unit logic: when your practice provides only the postpartum care (the delivering practice billed delivery-only), 59430 is reported once for the postpartum care provided. For the route-specific delivery-only and delivery-plus-postpartum carve-outs (59409, 59410, 59514, 59515), select strictly by what your practice actually performed.

OB global reimbursement is one of the most payer-variable numbers in billing, and any source quoting a single national dollar figure for 59400 should be treated with suspicion.

Why a fixed CMS PFS dollar is misleading for OB global. Traditional Medicare almost never pays maternity claims (its enrollees are generally past childbearing age), so the OB global codes are not priced the way most CPT codes are. The dominant maternity payers are Medicaid (which covers roughly four in ten U.S. births, per CMS/KFF data) and commercial payers. Medicaid maternity rates are set state by state; commercial rates are set by individual contract. There is no single 'OB global rate' — there are 50+ Medicaid fee schedules and thousands of commercial contracts.

What this means operationally:

• The global codes (59400/59510/59610/59618) are reimbursed as a lump sum for the entire episode, not per-visit. For a full, uncomplicated course the contracted global amount usually exceeds what component billing would collect.
• 59510 (cesarean) typically reimburses higher than 59400 (vaginal) under most fee schedules, reflecting the surgical component.
• When care is split and you bill component codes, the sum of the components is frequently less than the global would have paid — which is why correct global-vs-component determination is a revenue issue, not just compliance. You bill components because the rules require it, not because it pays better.
• Verify the maternity policy in your specific payer contract and state Medicaid fee schedule — the global-vs-component rules, antepartum visit thresholds, multiple-gestation billing, and whether ultrasounds/labs are carved out. Rates and rules vary — verify your contract.

Because maternity is high-dollar, low-frequency, and long-cycle, a single mis-billed global (double-billed antepartum, wrong VBAC code, global billed on split care) can represent thousands of dollars of exposure.

Clean OB global submission depends on documentation captured across the full pregnancy, not at the point of delivery. Use this checklist before any maternity claim leaves the practice:

Before billing the global (59400/59510/59610/59618):

• [ ] Your practice (same Tax ID) provided antepartum, delivery, AND postpartum care.
• [ ] The full routine antepartum course is documented (the prenatal flow sheet supports the visit volume the global assumes).
• [ ] The delivery note matches the code: vaginal (59400), cesarean (59510), successful VBAC (59610), or attempted-VBAC-converted-to-cesarean (59618).
• [ ] No routine antepartum E/M visits were separately billed and paid during the pregnancy (avoid the double-bill).
• [ ] The global is billed ONCE, after delivery, with date of service typically the delivery date (confirm payer convention).
• [ ] Carve-outs (ultrasounds 76801–76817, NST 59025, screening labs) were billed separately, not absorbed into the global.

Before billing components (split care):

• [ ] Confirmed which components your practice actually provided.
• [ ] Antepartum visit count is correct and documented (1–3 = E/M; 4–6 = 59425; 7+ = 59426).
• [ ] 59425/59426 billed as a single unit, not per visit.
• [ ] Delivery-only code matches route (59409 vaginal, 59514 cesarean) and includes postpartum only if provided (59410/59515).
• [ ] Transfer-of-care or insurance-change documentation is on file to justify why the global was not billed.

Eligibility and authorization:

• [ ] Coverage was verified at intake and re-verified if insurance changed mid-pregnancy (insurance eligibility verification catches the mid-pregnancy payer switch that silently breaks the global).
• [ ] Any payer-required notification of pregnancy / delivery authorization was submitted.

Getting the prenatal flow sheet, the delivery note, and the coverage history aligned before submission is what separates a clean OB claim from a months-long denial-and-appeal cycle on a five-figure episode.

OB global claims fail in characteristic ways. Because each maternity claim is high-dollar, working these denials promptly is high-ROI. These are the named CARC codes that dominate OB global rework and the fix for each.

The single biggest OB denial driver is the global-vs-component determination error, which surfaces as CARC 97 (double-billed antepartum), CARC 27 (coverage change mid-pregnancy), or CARC 18 (duplicate). All three trace back to billing the global when the components should have been split, or splitting when the global was correct. Build the determination into intake: flag every patient with a transfer of care, a mid-pregnancy insurance change, or a partial antepartum course, and route those claims to component billing before submission. For high-volume OB practices, outsourced denial management services can own the maternity denial worklist and the global-vs-component rules so five-figure episodes do not age out in A/R.

A practice running clean on OB global billing does five things consistently:

1. The global-vs-component decision is made at intake, not at delivery. Charts are flagged for transfer of care, mid-pregnancy insurance change, or partial antepartum course, and those flags route the claim to component billing automatically.
2. Routine antepartum visits are never separately billed when the practice intends to bill the global — the prenatal flow sheet accumulates them, the single global code captures them at the end. No double-billing, no CARC 97.
3. VBAC outcomes are coded to the actual result — 59610 for a successful VBAC, 59618 for an attempted VBAC converted to repeat cesarean, 59510 for a planned repeat with no trial of labor.
4. Antepartum tiering is exact — 1–3 visits as E/M, 4–6 as 59425 (one unit), 7+ as 59426 (one unit) — billed once, never per visit.
5. Carve-outs are billed separately — ultrasounds, NSTs, and screening labs are not absorbed into the global, and the global is billed once, after delivery, against a verified maternity benefit.

Maternity is a high-dollar, long-cycle, low-frequency episode, so a single mis-billed claim is worth far more than a typical office visit and far harder to catch after the fact. If your team lacks the bandwidth to run the global-vs-component determination on every chart, our OB/GYN billing services own the maternity workflow — intake flagging, global-vs-component logic, VBAC coding, carve-outs, and the denial worklist — end to end.