The 2027 Maternity Care Unbundling

What is happening

In April 2026 the AMA announced the CPT 2027 restructuring of maternity care services codes, the change the trade press has taken to calling “the great unbundling.” The bundled obstetric package, the model this entire site’s delivery hub documents, sunsets on December 31, 2026. Seventeen codes are deleted, including 59400, 59409, 59410, 59425, 59426, 59430, 59510, 59514, 59515, 59610, 59612, 59614, 59618, 59620, and 59622. Twelve new codes and a per-encounter E/M model replace them.

The AMA’s stated rationale: modern maternity care is delivered by multiple, sometimes unaffiliated teams across the pregnancy, and a single global fee to a single practice no longer describes how the work happens. Unbundled reporting is meant to make each phase of care visible for payment, quality measurement, and risk adjustment.

The new model: four phases

• Antepartum care: no more global bundle and no more 59425/59426 visit-count codes. Each prenatal visit is reported with standard office E/M codes (99202–99215), selected by medical decision making or time, with pregnancy status carried by ICD-10 codes. This accommodates risk-based visit schedules and telehealth visits, which ACOG’s 2025 prenatal care guidance already permits.
• Labor management: new codes reported per calendar day: initial day 59080 (straightforward) or 59081 (complex), subsequent days 59082/59083. Multiple gestation defaults to complex.
• Delivery: standalone codes by mode of delivery: 59431 vaginal, 59432 vaginal after prior cesarean, 59502 primary cesarean, 59503 repeat cesarean, 59504 cesarean hysterectomy. Routine same-day postpartum care is included in the delivery code. 59300 covers first or second degree laceration repair by a clinician other than the delivering provider, and 59623 covers uterine tamponade for postpartum hemorrhage.
• Postpartum care: per-encounter billing: inpatient subsequent-day E/M until discharge, office E/M for outpatient postpartum visits. 59430 (postpartum care only) is deleted along with the bundles.

The timeline

Commercial and Medicaid payer adoption will not be uniform on day one. Expect a messy transition year in which some payers implement the new codes on time, some run legacy bundle logic into 2027, and Medicaid programs vary state by state. Date of service controls which code set applies; pregnancies spanning the new year will straddle both systems.

What it means for OB practices

• Claim volume explodes. One global claim per pregnancy becomes dozens of encounter claims. Charge capture, coding throughput, and clean-claim discipline move from quarterly concerns to daily ones.
• Cash flow smooths but changes shape. Revenue arrives per visit across the pregnancy instead of as one payment at delivery. Practices lose the delivery-date payday and gain earlier, smaller payments.
• Transfer-of-care pain mostly disappears. The visit-count thresholds, forfeited globals, and CO-119 overlap denials this site documents at length exist because one bundle had to be split across practices. Per-encounter billing makes each practice’s work separately payable by default, which is also the change’s quiet upside for co-managed and high-risk care: every participating clinician’s work becomes independently billable.
• Documentation shifts to E/M leveling. Antepartum visits will live or die on MDM and time documentation like any office visit. Problem-visit habits from the global era (documenting “beyond routine care”) become the norm for every encounter.
• Watch the valuations. The AMA anticipates approximate budget neutrality across the new set, but per-specialty and per-practice outcomes depend on the final RVUs and on how commercial payers translate them. The 2027 PFS rule is the number to watch.

What to do now

• Hold your 2026 billing steady: the global package rules on this site apply through December 31, 2026 dates of service
• Inventory payer contracts for language tied to global codes (case rates, delivery bundles, quality incentives) and ask payers for their 2027 implementation plans in writing
• Start E/M leveling education for clinicians now; antepartum documentation habits take months to change
• Model cash flow under per-encounter payment, including the transition months
• For pregnancies conceiving after roughly April 2026, plan for split-year billing: global rules through December, unbundled from January

How this site will handle it

Every page in the delivery hub carries a notice that its codes sunset January 1, 2027. When the 2027 PFS final rule lands in November, we will publish the new code pages with real valuations, keep the legacy pages up for the transition (payers will adjudicate 2026 dates of service well into 2027), and log every change in Updates. The telehealth and modifier guidance on this site is unaffected; ultrasounds, NSTs, and the diagnostic services documented here were never inside the bundle and continue unchanged.

FAQ

Is the global OB package really going away? Yes. The AMA’s CPT 2027 code set deletes all seventeen global and component maternity codes effective January 1, 2027. This is a CPT-level change, not a single payer’s policy.

What replaces 59400? No single code. Antepartum visits bill as individual E/M encounters, labor management bills per day (59080–59083), the delivery bills by mode (59431, 59432, 59502–59504), and postpartum care bills per encounter.

What happens to a pregnancy that spans 2026 and 2027? Date of service controls. Care delivered through December 31, 2026 follows global-package rules; care from January 1, 2027 follows the new codes. Watch for payer-specific transition guidance on how the antepartum portion of a straddling pregnancy is reconciled.

Do the new rules change ultrasound or NST billing? No. Diagnostic services were always outside the global package and their codes are unchanged by this restructuring.

Will payment go up or down? Unknown until the November 2026 final rule. The stated intent is approximate budget neutrality across the code set, but individual practice economics will shift with visit volumes, risk mix, and how quickly commercial payers adopt.