California OB-GYN practices operate in one of the most billing-complex environments in the country. Global maternity packages, Medi-Cal managed care, delegated risk groups, and a patchwork of HMO and IPA arrangements create revenue cycle exposure that generalist billing teams consistently underperform in. With OBGYN Medical Billing Services designed specifically for specialty practices, these challenges can be managed effectively. Add the No Surprises Act compliance obligations and California’s own balance-billing restrictions, and it becomes clear why OB-GYN practices across the state are leaving significant reimbursement uncaptured — not from neglect, but from a lack of specialty-specific billing infrastructure.
MBC provides OBGYN medical billing services across California — from solo gynecology practices in San Diego to high-volume obstetrics groups in Los Angeles and the Bay Area. As your Revenue Integrity Partner, we manage the full revenue cycle for OB-GYN services, from antepartum coding through postpartum close-out, so your team can focus on patient care rather than claim rework.
Our OBGYN Medical Billing Services are built around California’s specific payer landscape — ensuring compliance with Medi-Cal managed care plans, Blue Shield of California, Anthem Blue Cross, Health Net, and Kaiser, while maximizing appropriate reimbursement at every stage of the billing cycle.
Not getting clean results from your current billing vendor? Request a Revenue Diagnostic — a no-cost analysis of your OB-GYN denial patterns, global maternity coding accuracy, and A/R aging specific to your California payer mix.
Through our OB-GYN Medical Billing Services, we systematically uncover coding gaps and reimbursement shortfalls that accumulate unnoticed in maternity and gynecology billing cycles.
| Category | Description |
| Global Maternity Expertise | Specialized coding across CPT 59400, 59510, 59610, 59618 and all antepartum/postpartum components |
| RCM Experience | 20+ years of OB-GYN revenue cycle management across California markets |
| Medi-Cal Proficiency | Deep familiarity with Medi-Cal managed care plans and California-specific ICD-10 documentation requirements |
| Claims Processing | Same-day claims submission to reduce A/R days and accelerate collections |
| Denial Rate Target | Sub-5% denial rate for OB-GYN clients within 90 days of engagement |
Why OB-GYN Billing Is Uniquely Challenging in California
California is not a standard billing market for OB-GYN practices. Several state-specific factors create revenue risk that an in-house biller — or a generalist billing company without California OB-GYN experience — is poorly equipped to manage:
- Medi-Cal managed care complexity. California’s Medi-Cal program operates largely through managed care plans — each with its own documentation requirements, authorization thresholds, and reimbursement rules. Practices that apply standard Medicaid billing logic to Medi-Cal managed care claims routinely face avoidable denials. MBC’s team tracks plan-level policy updates across the major California Medi-Cal managed care organizations.
- Global maternity package disputes. Payers frequently dispute global maternity billing when antepartum visits fall outside the expected range, when a provider change mid-pregnancy isn’t documented correctly, or when delivery complications are billed separately without adequate modifier support. Getting this right requires a billing team that codes global maternity daily — not occasionally.
- HMO, IPA, and delegated risk structures. A large portion of California’s commercially insured OB-GYN patients are covered through HMOs with delegated risk to IPAs. Authorization requirements, capitation carve-outs, and plan-specific fee schedules vary significantly across these arrangements and are a frequent source of underpayment and denial.
- No Surprises Act and California balance-billing law. California has its own balance-billing protections that go beyond federal requirements. OB-GYN practices — particularly those with hospital-based or out-of-network anesthesiology arrangements — must ensure billing workflows comply with both state and federal rules to avoid patient disputes and payer penalties.
- High-volume surgical coding exposure. California OB-GYN practices perform significant volumes of laparoscopies, hysterectomies, and hysteroscopies — all of which require precise ICD-10-PCS coding, NCCI edit compliance, and documentation of surgical approach and laterality. Errors in these high-value services result in underpayment or audit exposure.
Practices that partner with a specialist in OBGYN Medical Billing Services are better positioned to navigate these California-specific complexities through structured workflows and payer-level expertise that generic billing teams cannot replicate.
OB-GYN Billing Services We Handle in California
Our billing specialists manage the complete revenue cycle for obstetrics and gynecology providers across California, including:
| Service Area | Details |
| Global Maternity Billing | CPT 59400, 59510, 59610, 59618 — vaginal, cesarean, and VBAC deliveries with antepartum and postpartum components |
| Antepartum & Postpartum Coding | Correct unbundling when provider changes mid-pregnancy or patient transitions payers |
| Well-Woman & Preventive Visits | CPT 99381–99397 and G0101, G0123 — with accurate preventive vs. diagnostic split coding |
| Gynecology Office Procedures | IUD insertion, colposcopy, LEEP, endometrial biopsy, cryotherapy — with modifier support |
| Surgical OB-GYN Coding | Hysterectomy (abdominal, vaginal, laparoscopic), myomectomy, laparoscopy — ICD-10-PCS and DRG accuracy |
| High-Risk Obstetrics | Maternal-fetal medicine billing, fetal monitoring, and high-level ultrasound coding (76811, 76816) |
| Telehealth OB-GYN Billing | POS 02/10, modifier 95 — prenatal check-ins, postpartum follow-ups, and behavioral health screenings |
| Prior Authorization Management | Hysterectomy, myomectomy, advanced imaging — plan-specific authorization tracking across Medi-Cal and commercial payers |
| Denial Management & Appeals | End-to-end denial handling with payer-specific appeal documentation |
| A/R Follow-Up & Aging Recovery | Active pursuit of outstanding claims including aged Medi-Cal and HMO accounts |
| Credentialing & Payer Enrollment | Provider onboarding with California Medi-Cal, Blue Shield, Anthem, Health Net, Kaiser, and commercial plans |
| HIPAA-Compliant Reporting | Practice-level performance reporting including maternity metrics, denial rates, and A/R aging by payer |
We work with the EHR your practice already uses — Epic, Cerner, athenahealth, eClinicalWorks, or any other platform. You do not change your software. Our team integrates into your existing workflow from day one.
With comprehensive OBGYN Medical Billing Services, every stage of the revenue cycle — from initial coding to final payment posting — is optimized to reflect the full value of the care your practice delivers.
Are Your California Global Maternity Packages Being Billed Correctly?
Global maternity billing is the highest-revenue billing function in most OB-GYN practices — and one of the most frequently miscoded. A global maternity code (such as CPT 59400 for vaginal delivery with routine antepartum and postpartum care) bundles all related services into a single payment. The challenge is knowing precisely when to bill globally versus when to unbundle — and California payers are not forgiving of errors in either direction.
Correct application of global maternity codes is a core function of specialized OBGYN Medical Billing Services, ensuring that delivery revenue is fully captured and appropriately documented for each payer’s requirements.
Common global maternity billing errors that MBC identifies and corrects for California OB-GYN practices include:
- Applying a global code when fewer than the required antepartum visits were documented — triggering a payer dispute or full recoupment request
- Failing to unbundle correctly when a patient changes providers mid-pregnancy or transitions between Medi-Cal plans
- Missing modifier support (modifiers 22, 24, 25, or 59) for separately billable services performed during the global period
- Incorrect handling of VBAC deliveries (CPT 59610 vs. 59618) when a trial of labor is documented but results in cesarean delivery
- Not capturing high-risk add-ons for maternal-fetal medicine consultations or fetal surveillance services billed during the antepartum period
Global maternity packages represent the largest single revenue line item for most California OB-GYN practices. A coding error on a single delivery claim can mean a difference of $1,500–$3,000 in reimbursement, depending on the payer. MBC’s coders review every global maternity claim before submission to ensure visit count, modifier usage, and documentation all align with the billing payer’s specific requirements.
What a Revenue Diagnostic Finds in a Typical California OB-GYN Practice
When MBC performs a Revenue Diagnostic for an OB-GYN practice in California, the same patterns of revenue leakage appear consistently:
- Global maternity codes are applied when antepartum visit counts don’t support the global package — creating exposure to payer recoupment
- Well-woman exam and problem-oriented visit billed together without modifier 25 — resulting in preventive visit denial
- Gynecology office procedures (colposcopy, LEEP, IUD insertion) undercoded or missing modifier support for same-day E&M services
- Medi-Cal managed care claims submitted without plan-specific prior authorization documentation — causing systematic denial across high-volume services.
- Telehealth prenatal and postpartum visits billed without POS 10 or modifier 95 — rejected by commercial payers with updated virtual care policies
- Aged A/R from Blue Shield and Anthem claims beyond 90 days with no appeal initiated.
- Credentialing gaps are causing hospital-based OB-GYN claims to process under incorrect NPI or group billing numbers.
Our OBGYN Medical Billing Services address each of these issues through systematic workflow corrections that improve both immediate cash flow and long-term revenue integrity.
A Revenue Diagnostic identifies exactly where your practice is losing money — with California payer-specific data, not national averages. It takes approximately 15 minutes. Request yours here.
Stop Leaving OB-GYN Revenue Uncollected.
OB-GYN practices across California trust MBC to manage their full billing cycle — from antepartum coding to final payment on surgical services. Let’s find out how much revenue your current process is failing to recover.
OB-GYN Billing Coverage Across California
MBC serves OB-GYN and women’s health practices throughout California, including major markets and surrounding communities:
Los Angeles • San Diego • San Francisco • San Jose • Sacramento • Fresno • Long Beach • Oakland • Bakersfield • Anaheim • Santa Ana • Riverside • Stockton • Irvine • Chula Vista • Fremont • San Bernardino • Modesto • Fontana • Oxnard • Moreno Valley • Glendale • Huntington Beach • Santa Clarita • Garden Grove
If your California OB-GYN practice is located in a city not listed above, contact us — MBC’s California billing team serves providers statewide, including rural and community health settings.
What Outsourcing OB-GYN Billing in California Costs — and What It Returns
Most California OB-GYN practices pay between 4% and 8% of net collections for outsourced billing, depending on service complexity and payer mix. MBC operates on a per-collection model — you pay only when revenue is recovered. There are no setup fees, no long-term lock-in contracts, and no charges for credentialing as part of our standard RCM engagement.
The more useful question for most practices isn’t what billing costs — it’s how much the current process is costing through undercoded global packages, unchallenged denials, and aged Medi-Cal A/R. MBC’s Revenue Diagnostic quantifies that number specifically, using your practice’s actual data and California payer benchmarks, before you commit to anything.
For a deeper look at what optimized OB-GYN revenue cycle management can do for your practice’s bottom line, see our guide to yielding your EBITDA through RCM.
OB-GYN Billing in California: Frequently Asked Questions
California OB-GYN practices typically pay between 4% and 8% of net collections for outsourced billing, reflecting the higher complexity of global maternity coding, Medi-Cal managed care, and surgical procedure billing compared to lower-acuity specialties. MBC’s model is per-collection — you pay only on revenue recovered. There are no upfront fees or long-term contracts required before we demonstrate results.
California OB-GYN billing covers global maternity codes (CPT 59400, 59510, 59610, 59618), antepartum and postpartum components, well-woman and preventive visit codes (99381–99397, G0101), gynecology office procedure codes for colposcopy, LEEP, IUD insertion, and endometrial biopsy, surgical procedure codes for hysterectomy and laparoscopy, high-risk obstetrics codes including fetal surveillance and maternal-fetal medicine consultations, and telehealth codes using POS 02 or 10 with modifier 95. Medi-Cal managed care adds plan-specific authorization and documentation requirements on top of standard CPT coding.
Global maternity billing bundles antepartum, delivery, and postpartum care into a single comprehensive CPT code. Denials occur most often when antepartum visit counts don’t meet the threshold for the global code, when a mid-pregnancy provider change isn’t correctly handled through unbundling, or when modifiers are missing for separately billable services during the global period. California payers — particularly Medi-Cal managed care plans — apply strict documentation standards to global maternity claims, making specialty-specific billing expertise essential.
California’s Medi-Cal program operates through managed care plans — each with distinct authorization requirements, documentation standards, and reimbursement rates that differ from both standard Medicaid and commercial payer rules. OB-GYN practices that serve a significant Medi-Cal population must track plan-level policy updates, secure plan-specific prior authorizations for high-value procedures, and submit claims under the correct managed care organization’s billing rules. Applying standard commercial billing logic to Medi-Cal claims routinely generates avoidable denials. MBC’s California billing team monitors Medi-Cal managed care policy changes continuously.
Most California OB-GYN practices see denial rates drop measurably within 60–90 days of transitioning to MBC, as systematic coding reviews and payer-specific workflows replace reactive billing. Global maternity coding corrections typically yield revenue improvement within the first billing cycle. Aged A/R recovery from Medi-Cal and commercial payers generally follows within the first quarter of engagement.
