OB/GYN Billing — Built for Your Practice
The obstetric global package is one of the most elegant billing constructs in medicine — and one of the most dangerous. Bundle antepartum visits, delivery, and postpartum care into one code and you get simple billing. Miss the documentation to unbundle high-risk services from that global, and you've given away $500–$2,000 of separately billable care per complicated pregnancy.
Our OB/GYN billing team has handled hundreds of obstetric practices and knows exactly where money gets left in the global: gestational diabetes management, cerclage, preeclampsia monitoring visits beyond the standard count, non-standard ultrasounds, and genetic counseling. We capture all of it without ever triggering a bundling audit.
Why OB/GYN Billing Is Complex
OB/GYN billing requires mastery across two distinct practice areas:
- Obstetric global package — codes 59400 (vaginal delivery global), 59510 (C-section global), 59610 (VBAC global), and 59618 (attempted VBAC/C-section) each include specific antepartum visit counts. Exceeding those counts requires partial antepartum billing (59425/59426)
- High-risk pregnancy unbundling — gestational diabetes (O24.419), cerclage (57700), preeclampsia monitoring, and non-routine NSTs are billable outside the global. Modifier -24 flags them as unrelated to the global surgical period
- OB ultrasound TC/PC splitting — standard OB ultrasounds (76801, 76816) have technical and professional components. In-house equipment = bill both; rented equipment = professional only. Equipment ownership changes = billing method must change
- Gynecological surgical coding — laparoscopic vs. open hysterectomy, total vs. partial, with/without adnexa: each generates a different code family with different RVU values and global period lengths
- ✓ Specialty-specific denial prevention
- ✓ Certified coders trained on your CPT codes
- ✓ Payer-specific rules for OB/GYN
Common OB/GYN CPT Codes We Handle
Our OB/GYN billing team is trained on every major procedure code — from E&M visits to specialty-specific procedures — ensuring accurate coding and maximum reimbursement.
Not seeing your code? We handle all OB/GYN CPT, HCPCS, and ICD-10 codes.
Top OB/GYN Claim Denial Reasons — and How We Eliminate Them
Most OB/GYN denials are preventable. Our team knows exactly what to look for before submission.
❌ High-Risk Service Billed Inside Global Without Modifier
Separately billing a gestational diabetes management visit or cerclage during the global period without modifier -24 triggers an automatic bundling denial. The payer sees the date, sees an active global, and bundles it — even though it's legally separate care.
✓ Our Fix
We apply modifier -24 (unrelated E&M during postoperative period) and modifier -24 combined with specific diagnosis codes for every high-risk complication management visit billed during the global window. Our review process flags every OB claim against active global periods before submission.
❌ Partial Antepartum Care Billing After Transfer — Wrong Code Count
When a patient transfers OBs, the first provider must bill partial antepartum care using 59425 (4–6 visits) or 59426 (7+ visits). Billing 59400 when only 5 antepartum visits were provided, then having the receiving OB also bill 59400, creates a duplicate global claim that both providers lose.
✓ Our Fix
We track exact antepartum visit counts for every obstetric patient. When a transfer occurs, we immediately switch to the correct partial antepartum code and flag the chart for the delivery OB to bill only the delivery-only component (59409/59514).
❌ OB Ultrasound Both TC and PC Billed When Equipment Is Rented
Billing the global ultrasound code (76801 without modifier) when the practice rents its ultrasound equipment from a vendor means billing for services the practice didn't technically perform — a compliance risk and payer audit trigger.
✓ Our Fix
We document equipment ownership status for every client and apply the correct modifier structure (modifier -26 for professional component only when equipment is rented, no modifier when practice owns the equipment). When equipment ownership changes, we update billing parameters immediately.
❌ Infertility Services Billed Without Coverage Verification
Infertility coverage varies dramatically — from full coverage in states with infertility mandates to zero coverage in plans with explicit infertility exclusions. Billing IVF or IUI without verifying coverage means patients receive unexpected bills and the practice faces disputes.
✓ Our Fix
Before any infertility treatment begins, we verify the specific infertility benefit for the patient's plan, including cycle limits, dollar maximums, and diagnosis requirements. Coverage is confirmed in writing and shared with the patient before the first treatment date.
Everything Included with ZenoMedix RCM OB/GYN Billing
- Obstetric global package expertise — vaginal, C-section, VBAC, and attempted VBAC
- High-risk pregnancy unbundling with correct modifier application
- Partial antepartum care billing for provider transfers (59425/59426)
- OB ultrasound TC/PC billing based on equipment ownership status
- Gynecological surgical coding — laparoscopic, open, total, partial hysterectomy
- LEEP, colposcopy, and cervical procedure billing
- Infertility coverage verification and IVF/IUI billing
- 98%+ collection rate for OB/GYN practices
Complete Revenue Cycle for OB/GYN Practices
"Our OB/GYN practice increased collections by 30% in just 90 days. Phenomenal team."— Practice Manager, OB/GYN Group
OB/GYN Billing Available in All 50 States
From California to New York, our OB/GYN billing specialists understand your state's Medicaid program, payer mix, and compliance requirements.
Find Your State →OB/GYN Billing FAQ
The vaginal delivery global (59400) includes: one initial prenatal visit, all subsequent routine antepartum visits (typically 13 for a 40-week pregnancy), the delivery itself (vaginal or assisted vaginal), and the postpartum visit at 4–8 weeks. The C-section global (59510) includes the same antepartum care plus the surgical delivery and postpartum visit. Services NOT included in the global: visits for conditions not related to the pregnancy, additional ultrasounds beyond standard anatomy screening, high-risk monitoring like non-stress tests, cerclage, and management of pregnancy complications like gestational diabetes or preeclampsia.
Yes, and this is one of the most consistently under-billed services in obstetrics. Gestational diabetes (O24.419) is a complication of pregnancy that requires management beyond routine prenatal care. When your OB spends dedicated time counseling on diet, reviewing glucose logs, adjusting medication, or coordinating with endocrinology, those visits are billable separately using E&M codes with modifier -24. The documentation must clearly support that the visit was primarily for GDM management and not routine prenatal care.
Laborist billing introduces a two-provider scenario: the attending OB who provided antepartum care and the laborist who handles delivery. The attending OB bills partial antepartum care (59425/59426) based on visit count. The laborist bills the delivery-only code (59409 for vaginal, 59514 for C-section) under their own NPI. When the laborist is part of the same group practice, care is taken to avoid inadvertent global code billing that would encompass services provided by a different provider.
Yes. REI billing is a subspecialty with its own coding complexity: IVF cycles are billed in stages (monitoring, egg retrieval, laboratory procedures, embryo transfer), each with specific codes. Egg retrieval uses CPT 58970; embryo transfer uses 58974; monitoring with ultrasound and labs is separately billable. We also handle billing for diagnostic infertility workup (hysterosalpingogram, endometrial biopsy, diagnostic laparoscopy for endometriosis) and coordinate with genetic testing labs for PGT billing.
Colposcopy without biopsy (57420), colposcopy with biopsy (57421), and LEEP (57522 for cervical conization using LEEP/LLETZ) are all separately billable office-based procedures. When performed in the hospital or ASC, separate facility fees apply. The colposcopy and LEEP are NOT bundled together when performed on the same date — they can be billed together with modifier -51 on the secondary procedure. We capture all components of these common office procedures in every billing cycle.
OB/GYN Billing Results — By the Numbers
See How Much More Your OB/GYN Practice Can Collect
- ✓Specialty-specific coding analysis
- ✓Denial pattern review
- ✓Payer mix assessment
- ✓Revenue recovery estimate