What is OB-GYN Accounting?
OB-GYN practice accounting is the financial management discipline for obstetrics and gynecology practices — separating OB global package revenue from GYN procedures, tracking Medicaid vs. commercial profitability, and reconciling in-office procedure margins — typically used by OB-GYN owners generating $500K–$3M per provider who need clarity on whether their OB service line is helping or hurting profitability.
Your P&L swings $100K month to month. That is not normal. That is bad OB accounting.
Global OB packages, malpractice costs, Medicaid mix. OB-GYN accounting has complexity that most firms just average out. We break it down.
A 4-minute test your accountant hopes you skip.
At a glance
Industry Context
How OB-GYN Practices Actually Run Their Books
OB-GYN accounting is uniquely complex because of global maternity billing. A pregnancy episode is billed as a single global package (CPT 59400 for vaginal delivery, 59510 for cesarean) that includes prenatal visits, the delivery itself, and postpartum care. The revenue from one global OB code is not received until the delivery is performed and the claim is submitted, often 9 months after the first prenatal visit. This creates significant accrual and cash flow complexity that generic accounting setups handle poorly. A practice with 600 deliveries per year has $5M to $8M in OB revenue tied up in this pattern.
OB-GYN practices also have substantial GYN office and procedural revenue (annual exams, contraception including IUDs and implants, in-office procedures like LEEP and endometrial biopsy, ultrasound, lab), and many have ancillary lines like in-office ultrasound, pelvic floor therapy, or aesthetic services. Each line has different reimbursement dynamics, different staffing needs, and different supply costs. Malpractice insurance costs are uniquely heavy in OB ($80K to $200K+ per OB physician per year in many states), which dramatically affects per-physician contribution margin.
Is This Right for You?
This service is for OB-GYN practice owners who recognize these problems:
Need strategic financial leadership? Our Fractional CFO service for OB-GYN practices may be a better fit.
What We Often Find
Common Accounting Mistakes in OB-GYN Practices
These are the patterns we see most often when we open the books of a new OB-GYN client.
01
Booking global OB revenue at the time of delivery only
Some practices wait until delivery to recognize any OB revenue, creating $400K to $1M+ swings between months with high vs low delivery volume. We use accrual based on care delivered through pregnancy stage with reconciliation at delivery.
02
Not separating OB from GYN revenue
OB and GYN have very different per-encounter revenue, malpractice cost, and supply patterns. When the books show one combined revenue line, owners cannot evaluate the standalone economics of each service line.
03
Lumping IUD device cost with general supplies
IUDs cost $400 to $800 per device. Tracking them as 'supplies' obscures the true cost-vs-reimbursement margin per device type and per payer, which can vary materially.
04
Not allocating malpractice cost per physician
Malpractice premiums vary by physician based on whether they perform OB, surgical volume, and prior claims. Allocating malpractice as overhead obscures true per-physician contribution margin.
05
Treating Medicaid revenue at the same value as commercial
Medicaid often pays 50 to 70 percent of commercial rates for the same service. When per-payer revenue is not tracked, owners cannot see when Medicaid mix is shifting and dragging down practice economics.
The Numbers That Matter
Key Accounting Metrics for OB-GYN Practices
OB vs GYN Revenue Mix
- OB collections vs GYN collections as separate line items.
Deliveries per OB Provider per Month
Healthy range: 10 to 20 deliveries per OB per month
- Total deliveries divided by OB-credentialed providers.
IUD Margin per Device
- Net reimbursement per device minus acquisition cost, by IUD type.
Ultrasound Volume per Month
- Ultrasound studies performed per month, OB and GYN tracked separately.
Medicaid Concentration
Healthy range: Track trend; high concentration creates rate-cut exposure
- Medicaid revenue as a percentage of total revenue.
Practice Overhead Ratio
Healthy range: 60 to 70 percent excluding malpractice
- Operating expenses divided by collections, with malpractice broken out separately.
Software & Vendors
EHR, PM, and Vendor Reality for OB-GYN Practices
OB-GYN practices typically run on Athenahealth, eClinicalWorks, Epic, NextGen, or specialty platforms like ObGynEMR. Athenahealth and eClinicalWorks have strong OB-GYN configurations including global OB tracking; Epic appears in hospital-affiliated practices. The hardest reconciliation task is matching global OB revenue (which spans 9 months before the delivery claim hits) against bank deposits, while separating OB from GYN and tracking ancillary lines.
IUD and contraceptive supply relationships drive a meaningful margin line. Manufacturers (Bayer for Mirena/Kyleena, AbbVie/Medicines360 for Liletta, Organon for Nexplanon (spun off from Merck in 2021)) have varying acquisition cost programs and rebate structures. Ultrasound equipment vendors (GE, Philips, Mindray, Samsung) sell capital equipment in the $40K to $150K range that needs ROI modeling. Lab equipment for in-office Pap testing, HPV testing, and STI testing has its own vendor relationships and reagent costs.
What's Included
How We Work With OB-GYN Practices
OB-GYN-specific accounting that goes beyond reconciliation.
OB Global Package Accounting
- •Global OB fee revenue recognition methodology
- •Antepartum visit tracking and unbundled billing identification
- •Delivery revenue and cost analysis (vaginal vs C-section)
- •Postpartum visit reconciliation
OB vs GYN Service Line Separation
- •Separate P&Ls for obstetric and gynecologic services
- •Malpractice cost allocation between OB and GYN
- •Provider time allocation analysis
- •Revenue per provider per service line
Malpractice & Risk Cost Tracking
- •Per-provider malpractice cost analysis
- •Malpractice cost as percentage of OB revenue
- •Risk reserve planning and tail coverage costs
In-Office Procedure Economics
- •Per-procedure margin analysis (colposcopy, IUD, LEEP, biopsy)
- •Supply cost tracking for in-office procedures
- •Procedure volume and revenue trending
Results
What OB-GYN Practices Experience
| Metric | Typical Outcome |
|---|---|
| Revenue recognition fix | Stable monthly P&Ls that unlocked low-to-mid six figures in previously deferred investment decisions |
| In-office procedure capture | Roughly $70K in annual revenue recovered from charge capture corrections |
| Payer strategy | Medicaid volume capped and commercial recruitment increased, improving average revenue per visit in the mid-to-high single digits |
Illustrative Scenario
What This Looks Like In Practice
A multi-physician OB-GYN practice with two locations, delivering several hundred babies a year, revenue in the mid-single-digit millions. Profit margin had fallen from the low 20s to the low teens over several years. The physicians blamed reimbursements and malpractice, but the root causes were more varied.
What we typically find:
- •Global OB revenue recognition creating monthly P&L swings in the mid-five to low-six figures because the accounting methodology had not been updated for current volume
- •Malpractice absorbed mostly on the OB side while only a minority of revenue came from OB deliveries, meaning the GYN side was quietly subsidizing OB liability costs without visibility
- •In-office GYN procedures (IUD insertions, colposcopies, biopsies) performed routinely but with charges missed on roughly a fifth of procedures, worth around $70K annually
- •Medicaid patients running net-negative after fully loaded costs, a per-visit loss no one had calculated
Representative results
Stable monthly P&Ls that unlocked low-to-mid six figures in previously deferred investment decisions
Revenue recognition fix
Roughly $70K in annual revenue recovered from charge capture corrections
In-office procedure capture
Medicaid volume capped and commercial recruitment increased, improving average revenue per visit in the mid-to-high single digits
Payer strategy
The takeaway
The pattern we see in OB-GYN practices: global OB revenue recognition, unallocated malpractice, and missed in-office procedure charges each distort the P&L in different directions. Until they are separated, payer mix decisions are guesses.
Common Questions About Accounting for OB-GYN Practices
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The test your accountant hopes you skip.
By state
OB-GYN Practices accounting and CFO support, by state
State-level tax, payer, and regulatory context shapes what “good” looks like for ob-gyn practices practices. The pages below walk through each state's specifics.