Women’s Health Billing Changes: What OB/GYN Groups Need to Do Now

A pregnancy that begins in 2026 can reach delivery under a different coding structure in 2027. That makes the 2026 women’s health billing changes a current workflow decision: OB/GYN groups need to review Medicare payment updates already in effect while preparing for new maternity reporting on January 1, 2027. The work starts with knowing which rules apply to which dates of service—and which payer will accept them.

For a group delivering care across offices, hospital teams, and acquired practices, loading the new codes is only part of the job. Documentation, contracts, claim edits, and patient estimates have to support the same approach.

Higher 2026 Medicare conversion factors do not mean every service will pay more

Medicare’s 2026 Physician Fee Schedule established separate conversion factors for qualifying Advanced Alternative Payment Model participants and other clinicians, approximately $33.57 and $33.40, respectively. The schedule also introduced a negative 2.5% efficiency adjustment affecting the valuation of many non-time-based services. The adjustment does not apply uniformly to every service; exclusions include E/M services and maternity services assigned an MMM global period.

The adjustment is not a uniform 2.5% cut to reimbursement. Payment also reflects practice expense, malpractice expense, geography, and other valuation changes. ACOG’s 2026 analysis shows why a higher conversion factor can coexist with lower payment for gynecologic procedures.

For an OB/GYN group, review the actual service mix: office visits, hysterectomies, pelvic repairs, and other procedures. Finance should model expected allowed amounts by code and setting. Contracting should identify agreements tied to Medicare rates and the year of the fee schedule they reference. Applying a single percentage to last year’s revenue will miss those differences.

Maternity code structure changes on January 1, 2027

The AMA’s CPT 2027 restructuring separates maternity care into antepartum care, labor management, delivery, and postpartum care. It deletes 17 codes, adds 12, and revises six. Familiar codes scheduled for deletion include 59400, 59510, 59425, 59426, and 59430.

Under the new framework, antepartum and postpartum encounters use the appropriate E/M services. Labor management and delivery have distinct reporting. The operational consequence is significant: work previously represented inside a global package needs to be identifiable at the encounter and service level.

The following table summarizes the CPT structure. Payer payment and transition instructions still need separate confirmation.

For revenue cycle leaders, the first test is whether an encounter can be traced from the clinician’s record to the correct charge. A prenatal note built mainly to record a visit inside a package may need revision to support E/M selection. Clinicians and coding specialists should review representative notes together before changing charge defaults.

Pregnancies crossing year end need a payer-specific transition plan

A patient whose prenatal care starts in October 2026 and whose delivery occurs in 2027 is the case to test first. The group needs explicit instructions for the 2026 visits, the delivery, and the postpartum services. Automatically switching the entire episode based on the delivery date could conflict with the payer’s transition rules.

On October 30, 2026, CMS announced temporary enforcement discretion for certain cross-year maternity episodes when applicable payer business rules permit continued use of the 2026 maternity CPT codes during 2027. The discretion extends through December 31, 2027. The CMS letter states that this is not Medicare payment policy and does not independently require a payer to accept the earlier codes. Providers should follow the applicable payer’s written transition instructions.

Ask each major payer how it will handle these episodes, whether claims must be split, and which dates determine the applicable reporting method. Record the written policy, its effective date, and the affected products. Commercial, Medicaid, and Medicare instructions should each be checked rather than inferred from another payer.

A code-set change does not settle the reimbursement contract

The 2027 policy discussion has included a second reporting path: proposed HCPCS G-codes that would preserve global maternity reporting. Before building a second billing method, verify the final CMS decision and each payer’s implementation instructions.

Cigna’s October 15, 2026 notice illustrates the distinction. It described two possible 2027 approaches, contingent on CMS’s final action, and said its existing maternity billing guidance remained unchanged for services through December 31, 2026. Its notice also deferred cross-year transition instructions.

That matters when a contract still specifies a global maternity allowance. Separate CPT reporting does not by itself establish separate payment amounts. Obtain the payer’s accepted code set, rates, bundling rules, and transition instructions before replacing the current billing workflow. Update patient estimates only after the applicable benefit and payment treatment are clear.

Cervical screening updates have their own coverage timeline

HRSA’s January 2026 cervical cancer screening update added a self-collection option and identified high-risk HPV testing as the preferred screening approach for average-risk women ages 30–65. It also addressed additional testing needed to complete screening. The updated recommendation’s coverage requirements apply according to the guideline’s specified plan-year implementation timeline, which billing teams should verify against the patient’s plan and date of service.

For billing teams, the distinction is between an updated clinical recommendation and the benefit terms applicable to the patient’s plan and date of service. Review specimen collection, laboratory routing, screening indications, and payer coverage together. The guideline announcement alone should not trigger a blanket change to patient cost-sharing or Medicare billing.

Test the encounter before changing the default

A useful readiness review follows real care through the systems your group uses. Include an uncomplicated pregnancy spanning both years, a transfer between practices, labor managed by a different clinician from the delivery, and postpartum follow-up outside the delivering practice. These are test scenarios, not assumptions about how any payer will adjudicate them.

• Build a payer matrix. Document the accepted code set, effective dates, cross-year rules, payment methodology, and unresolved questions for each major payer and product.

• Review documentation. Confirm that prenatal and postpartum notes support the applicable E/M service, and that labor and delivery records identify the services and clinicians involved.
• Test the claim path. Run representative cases through charge capture, coding, clearinghouse edits, and payer testing where available. Include exceptions and transferred care.
• Watch the first adjudications. Compare expected and actual allowed amounts, denials, and patient responsibility by payer and service. Assign an owner to investigate recurring discrepancies.

What payers do next should shape how you bill

The first remittances after a billing change can reveal where implementation is breaking down. A payer may reject a new maternity code, bundle a separately reported service, or pay differently from the contracted expectation. Those responses help the team determine what needs correction before the same problem affects more encounters.

RemitIntel brings that review into focus by connecting claims and remittance patterns with policy signals and supporting evidence. Your team can evaluate recommendations for reimbursement logic, approve the appropriate changes, and monitor subsequent outcomes. As OB/GYN billing requirements evolve, that gives payment experience a direct role in improving the next decision.

Explore how reimbursement intelligence supports OB/GYN and fertility billing.