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2027 Substrate Maternity Resource Center

Global billing for maternity is ending.

Today, maternity care is largely billed using a "global" code. Beginning January 1, 2027, CPT revisions will allow care to be reported more granularly at the service level. January 1 is the CPT effective date, but each payer might choose to transition billing on their own timeline.

The 2027 Substrate Maternity Resource Center tracks which of your payers are moving off global maternity billing, so you can adapt proactively. For more background, see the AMA CPT 2027 maternity care services update.

207Tracked Payers
63confirmed 2027 guidance
43proposed but not final
26pending payer guidance
16awareness notice only
59policies unchanged

Current As Of October 2026

Billing tools

Turn payer policy into billing instructions

Standardized biller rubric

What to bill, by payer

Visit-date and EDD triggers, visit-count rules, codes to bill, modifiers, diagnosis and Category II requirements, cost share, and payer contacts, each tied to the verbatim source passage.

Open the rubric →

Encounter billing calculator

Check a single encounter

Enter the state, payer or plan, date of service, delivery date or EDD, visit number, and service phase to get that payer's own maternity billing instruction with its source.

Open the calculator →

Interactive policy explorer

Find a payer or transition date

State results include exact state records and clearly labeled national commercial guidance. National guidance does not confirm a state-plan, Medicaid, or Medicare Advantage policy.

Showing 1 of 207 • All states • All statuses

Pending payer guidance

Anthem Blue Cross Blue Shield of California

CATransition: California exemption effective TBD

Commercial policy C-19004, approved September 9, 2026, describes January 1, 2027 service-level maternity reimbursement, including E/M plus modifier TH. Its policy history adds a California exemption effective TBD due to delayed implementation. For California commercial professional claims, that effective date is not established, so the 2027 service-level rules are not confirmed.

Published
2026-09-09
Transition starts
California exemption effective TBD
Billing starts
Not published. The California exemption effective date is TBD.
Evidence checked
2026-10-06
Billing notes and scope

Scope: Anthem Blue Cross commercial professional claims in California. The policy exempts California with an effective date TBD.

Transition: The only California timing in the retrieved text is the policy-history line: California and Virginia exemption effective TBD due to delayed implementation. The exemption body text was not in the retrieved PDF text.

Global billing: The policy says it replaces the global obstetric package with service-level reimbursement, and the same history line delays that change for California. Do not apply the service-level rules as confirmed California billing instructions.

Pending because of the delayed California exemption. Do not publish a California billing date. The policy number in the document is C-19004.

Client-ready download

Download your payer-mix guide

One tailored PDF guide: a cover summary, background on the 2027 change, source links to every payer policy in this mix, the selected payers and states, the evaluation rubric, and one page per policy document with verbatim payer guidance.

Select at least one payer card above to build a guide.

Frequently asked questions

What you need to know

Is global billing for maternity ending everywhere at once?

No. CPT revisions take effect January 1, 2027, but that is not each payer's billing date. Search tracked payers to see who published a transition date, whose guidance is still proposed, and whose policies are unchanged.

What is changing about maternity billing in 2027?

Today, maternity care is largely reported using a global code. Beginning January 1, 2027, CPT revisions will allow care to be reported more granularly at the service level. Whether and when a payer moves off global billing depends on that payer's own policy.

How do I see what’s changing by payer in my market?

Search the 2027 Substrate Maternity Resource Center by payer, then open the primary policy. Confirm the transition and billing dates, and recheck the source before submitting claims. This is policy intelligence, not coding or legal advice.

Can I download policies for multiple payers?

Yes. Select payer cards and download one PDF guide for that payer mix. It opens with background on the 2027 change, links to every cited payer policy, and each policy gets its own page with the verbatim payer guidance and source links. The source documents remain on each payer's website.

Disclaimer

The information provided on this page is for general informational purposes only and does not constitute billing, coding, or reimbursement advice. Nothing on this page should be relied upon as a substitute for clinician assessment, professional billing guidance, or as a definitive statement of any payor's billing requirements or policies.

Payor agreements, fee schedules, and billing policies vary and are subject to change. Before submitting any claims related to maternity care services, including claims affected by the 2027 CPT code revisions, please consult the applicable payor agreements, coverage policies, and billing guidelines to confirm current requirements for their specific payor contracts.

Substrate makes no representation or warranty regarding the accuracy, completeness, or timeliness of the payor-specific information presented here. Providers are solely responsible for ensuring that all claims are submitted in accordance with applicable payor requirements, and Substrate assumes no liability for claim denials, underpayments, or other adverse outcomes arising from reliance on this information.

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